820111 820131

Transcript

om .c ar tM an ua ls I TRANSFORMER RATIOMETER TR700/TR8 00 CAT, NO, 820110/820130 OPERATING AND INSTRUcnON MANUAL .E lec tri ca lP () I I J , , ww I w � PIN 82011 1/820131 SIN 8470 & UP 910624 om TABLE OF CONTENTS GENERAL INFORMATION GENERAL DESCRlYI10N , .. . ... FEATURES . . .. . . .. . . . . .. SPECIFICATIONS . . . .. . .. . . . . .. ACCESSORIES FURNISHED . ACCESSORIES AVAILABLE . . CHANGES . . .. . .. . . . .. .. . . . . . . . . .. . . . . . . . . . . . . . . . . . . .. WARRANTY 0 1.l 1.2 1.3 1.4 1.5 1.6 1.7 I 1 2. . 3. . . . . . . . . 0 0 0 0 0 0 • 0 0 0 0 0 0 0 • • • • • • • • 0 . . . . . . . . . . . . . . • . . • . . • . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . • . . • . . . . . . . . . . . . . . . . . . . . . . . . . • • . • • • • • • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . • 0 • • • • • • • • • • • 0 • • • • . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . 0 0 . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . 0 0 • • • • • • tri ca . .E lec . . . . . . • • . . . . . • • . . . . . . . . . . . . . . . . . . 0 • • 0 • • • • • • • • • . . . . . . . . • • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 0 • • 17 • • • • • • • • • • • • • • • • • • • • • • • • • 21 . . . . . . . . . . . . . . _ . • • • • • • • • • . . . . . 0 • • . . . . . . . . . . . . . . . . . . . 0 • • . . . . . . . . . . . . . 0 • • • • • • • • 0 • • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . _ . 24 26 26 29 31 34 .. . . . . . . . . 0 • • • • • • • • • • • 0 • • • • . . 0 • • • • • • 0 0 • • • • • • • • . . . . . . . . . . 0 • • • 0 0 • 0 • • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 • • • 2 9 9 13 . . 8 8 8 8 8 . . SERVICE AND MAINTENANCE 5.1 DOCUMENTATION w . 2 2 3 3 5 6 6 7 . TROUBLE SHOOTING 4.1 SETTING OF DEVIATION DIALS . 4.2 QUICK REFERENCE TROUBLE CHECK PIN 820111/820131 ww • . . lP . . 5. 0 . OPERATING INSTRUCTIONS . PANEL CONTROLS-AND OPERATING FUNCTIONS 3.1 3.2 GENERAL OPERATING INSTRUCTIONS USING A SELFCHECK PROCEDURE (Ratio 1:1) ......................... 3.3 MEASUREMENT OF SINGLE-PHASE, TWO-WINDING TRANSFORMERS . SINGLE PHASE AUTO TRANSFORMERS AND 3.4 REGUlATORS DETERMINING TRANSFORMER CONNECTIONS USING 3.5 ONLY NAMEPLATE DATA . . . . ... .. .. 3.6 lHREE PHASE TRANSFORMERS (Two Windings) 3.7 THREE PHASE AUTO TRANSFORMERS . . 3.8 INTERPRETATION AND PROPER USE OF TI:IE RATIO DEVIATION DIAL . 3.9 CURRENT TRANSFORMERS . . . 3.10 INSTRUMENT VOLTAGE TRANSFORMERS . . .. . . . . . .. . .. . . 4. • . INSTALLATION UNPACKING AND INSPECTION . PREPARATION FOR USE LINE SUPPLY VOLTAGE REPACKING AND SHIPMENT . J oj r- . 2.1 2.2 2.3 2.4 1 ( . 0 ar tM an ua ls 1. .c PAGE . • 37 37 38 _ 39 39 1.1 Three-phase switching on the ! simplifies test procedures, saves time FEATURES - lP 1.2 Built-in three-phase lead switching. High ratio range; 1:1 to 2021:1. Ratio's all types of C.T.s. Full internal protection from over-voltage and shorted output conditions. True four terminal measurements for high ·accuracy. .E lec tri - Direct reading of percent deviation of transformer ratio. - Phase angle measurement provided to give more accurate indication of transformer condition. - Durable transport case provided for longer instrument life. - Built-in current meter for performing excitation tests. P/N 820111/820131 ww ! 1R800 and greatly reduces the risk of electric shock. w I om The phase deviation feature of the 1R800 gives the operator the phase difference between primary and secondary voltages, which is useful in determining if there are shorted turns or whether the winding has an unequal number of turns connected in parallel. i i ar tM an ua ls Built into the TR800 is a current meter for the measurement of the exciting current of the transformer under test. Keeping a history of excitation current has proved to be a reliable way of detecting problems in transformers. -, 1 GENERAL DESCRIPTION The 1R800 is a portable instrument designed for the accurate ratio measurement of transformers and all devices with AC ratiometric dividers associated with them. 1 -I .c GENERAL INFORMATION ca 1 1 l 1 1 l 1 l) I. 3 SPECIFICATIONS 25' C ±5' C Specifications: 6 months 50 or 60Hz .c ±2Hz. om 1.3 Transformer ratio arm bridge circuit with phase sensitive null detector. ar tM an ua ls Bridge: Bridge Output Test Voltage: 120V, 1 A isolated, line dependent. 12V, 1 A isolated, line dependent. F requency: 50 or 60Hz depending on line frequency. l l Ratio Measurements: (Exclusive of % Deviation Dial) Multiplier T) 0.001 2.000:1 4.000:1 10.00:1 20.00:1 40.00:1 100.0:1 200.0:1 400.0:1 1000.0:1 2021.0:1 O'(lO2 0.005 0.01 0.02 0.05 0.1 0.2 05 1.0 ca I Maximum Range lP 0.1 0.2 05 1.0 2.0 5.0 10.0 20.0 50.0 100.0 Resolution Accuracy: ±0.1% NOTE: Display by 1R800 is ratio at test voltage (12 or 120V) and may not be ratio of device at its rated voltage or current. .E lec tri of ratio. % Deviation Dial Range: Resolution: Accuracy: w Maximum ww PIN 820111/820131 + 0.5 to -0.5 percent of 0.02% of ratio reading. ±2% of dial reading. 4 ratio reading. 1.3 SPECIFICATIONS (continued) om SPECIFICATIONS (continued) .c 1.3 Phase Deviation Dial 1 0.1 1.0 O.02CR 0.2CR ±05CR ±S.OCR Accuracy: ±2% NOTE: 1 centiradian (CR) 34.S minutes. 60 minutes 1 degree. reading. = Excitation Meter Multiplier 1.0 10.0 , ') Protection . "XC' Input: Maximum Range 2rnA 20rnA SOmA SOOrnA ±3% fuU scale. IS0V RMS maximum before protection shorts XO to Xl. Energizing X side of transformer instead of H side) will usually try to develop in excess of lS0V on X side of TR800 thereby enabling protection to short XO to Xl. This prevents any damaging voltage from entering the instrument. tri ca � I Resolution lP Accuracy: l � j w L .E lec Resettable Circuit Breaker: 2A maximum fast acting; 0.1 second tum-off time. Prevents any circuit damage due to high currents created when the output supply is shorted or test transformer is connected backwards. j PIN 820111{820131 ww ! Maximum Range = 1 I Resolution ar tM an ua ls l Multiplier S I om Instrument: Case: Weight: Instrument: 9kg (20 lbs) 12kg (27 lbs) Shipping: 1.4 1 ar tM an ua ls 1 400 x 220 x 250mm (IS x 9 x 10 inches) 480 x 530 x 370mm (19 x 21 x 14 inches) Sizes: , .c Instrument and accessories supplies with portable foam-lined canying casC. Case has hinged opening from above with a lockable latch. Physical: ACCESSORIES FURNISHED The TR700 Transfonner Ratiometer is supplied complete with: 820111 Instruction Manual Set of 10m leads 820112 Transport Case AC Line Cord 1 1 The TR800 Transformer Ratiometer is supplied complete with: 820131 Instruction Manual 820132 Set of 10m Leads . Transport· Case AC Line Cord 1 ACCESSORIES AVAIlABLE Operating and Instruction Manual, TR700 10M Test Leads 25M Test Leads Range Extension Transformer, 5: 1/2:1, Step-up CCYT Ratio Test Extension Adaptor Operating and Instruction manual, TR800 10M Test Leads 25M Test Leads Invertor, 12VDC to 120V AC 10M Test Lead Extension 25M Test Lead Extension .E lec tri 820111 820112 820113 820116 820118 820131 820132 820133 820134 820135 820136 lP 1.5 ca 1 f) 1.6 CHANGES w Please Dote that this instrument is subject to continuous development, and improvement. This instrument may therefore incorporate minor changes in detail from the information contained herein. ww P{N 820111/820131 6 1.7 WARRANTY ar tM an ua ls .c Multi-Amp warrants this instrument sold by us or our authorized agents, to be free from defects in material and workmanship for a period of 12 months from date of shipment. During the warranty period, Multi-Amp will, at our option, repair or replace the Instrument or part thereof which proves to be defective providing: 1 (1) The Instrument is returned properly packed and transportation prepaid with prior authorization from us or our appointed agent, (2) The Instrument has not been altered, modified or repaired by unauthorized personnel and, (3) That our examination discloses to our satisfaction that any improper operation or failure was the result of defective material or workmanship and was not the result of improper use, negligence or accident, exceeding environmental limits, or connecting the instrument to incompatible equipment. This warranty is exclusive and is given and accepted in lieu of all other warranties, express or implied, and constitutes flllfil1ment of all our liabilities to the purchaser. Multi-Amp specifically disclaims the implied warranties of merchantability and fitness for a specific purpose. We assume no liability, in any event, for consequential damages, for anticipated or lost profits, for personal injury due to use or accident, for incidental damages or loss of time or otber losses incurred by the purchaser or any third party in connection with instruinents covered by this warranty or otherwise. I tri ca lP lC) 1 1 I .E lec 1 1 I w Iu PIN 820111/820131 ww I I om I­ I I 1 1 7 2.1 UNPACKING AND INSPECTION om INSTALlATION .c 2. I 1 I I 1 f) 1- ar tM an ua ls Prior to shipment this instrument was electrically tested and mechanically inspected and found to meet specifications and be free of mechanical defects. After unpacking the instrument, visually inspect the instrument and accessories for damage. H evidence of damage is present YOU must contact the carrier who transported the unit and file a claim in writing. The shipping container and packing material should be retained for inspection by the carrier's agent. Electrical operation per section 3 should be checked as soon as possible after shipment. -' - 2.2 PREPARATION FOR USE - lP UNE SUPPLY VOLTAGE 2.4 tri ca This instrument is shipped from the factory for operation on either 120V, 60Hz line or 220V, 50Hz. Voltage is noted on the test report. To prevent damage to the instrument, ensure that the voltage on the test 'report matches your particular line voltage. REPACKING AND SHIPMENT To insure proper shipment of this instrument it is recommended that the original reusable container and packing material be retained. If being returned for calibration or service, please attach a card to the instrument specifying the owner, model and serial number and service required. w 1 l) PIN 820111/820131 ww I I 2.3 .E lec 1 I 1 1 I INSURE THAT1HE APPARATUS TO BE TESTED IS CLEARED AND DE-ENERGIZED PRIOR TO TEST. It is highly recommended that the user familiarize himself with the controls, functions and features detailed in sec . tion 3 prior to use. 8 3.1 � This section details and describes the operating features of the lR700 and lR800. (Refer to Figures 1 and 2). . Line Input Socket - Standard input for line cord provided. 2. Instrument ON - Flipping this switch upwards activates the instrument, immediately sending voltage to the "H" output terminals. This switch is also a fast-acting circuit breaker, therefore, protecting the instrument by shutting itself off. To reset, simply flip switch upwards. 3. Power ON Indicator - This red LE.D. is illuminated when instrument is energized. 4. Detector Phasing Switch - State of bridge balance of ratio or phase deviation. Null meter (17) is indicator for balance condition. 5. Detector Sensitivity - The sensitivity of null meter (17) is controlled with this adjustment. As a general rule, the higher ratio's require higher sensitivity. ego A 1:1 ratio, therefore would require the lowest gain and a 2000:1 ratio would require a high sensitivity setting. 6. Phase Multiplier Switch - The approximate range of phase deviation is determined with this switch. 7. Phase Deviation Dial - The precise value of phase deviation is determined by this setting in conjunction with the phase multiplier switch (6). � � � � 9. � � w A�l) II Ratio Multiplier Switch - The approximate range of the ratio being tested is determined with this switch. .E lec 8. lP ! / ca , ar tM an ua ls 1. tri � � l � � � PANEL CONlROLS AND OPERATING FUNCTIONS om I OPERATING INSlRUCTIONS .c j- 3. ww PIN 8201ll/82OlJl Ratio Switches - These switches determine the "Ratio" of the test transformer, when used in conjunction with ratio multiplier (8). 9 10. .c PANEL CONTROLS AND OPERATING FUNCTIONS (continued) Ratio Deviation Dial- Once the calculated transformer ratio is entered into the ratio switches (9) and ratio multiplier (8), this dial gives a direct reading of percent deviation of the test transformer versus the entered ratio. When balancing ratio switches, this dial should ALWAYS be in 0 position. ar tM an ua ls 3.1 om PANEL CONTROLS AND OPERATING FUNCTIONS (continued) 3.1 " f) 1 -I 13. "X" Selector - This switch selects input to be measured from " X Lead" connections. 14. "H" Selector - This switch selects input to . be measured from "H Lead" connections. 15. Polarity- This switch reverses iile polarity of measured ratio and also acts as a polarity indicator. 16. Test Voltage Selector - This switch applies 12V or 120V to the test transformer. 12V is generally used for C.T.s where cores saturate at low voltages. 17. Null Meter - Indicator for balance of ratio and phase. Detector phasing switch (4) determines which is being balanced. 18. w {_I PIN 820111/820131 ww I "H" Input- This connector couples with the provided leads marked "HO to IDIt, Excitation Ammeter - This meter indicates the amount of current required to excite the test transformer at the selected test voltage (16) under no load conditions. .E lec 1 -'1 12. tri 1 I 1 "X" Input- This connector couples with the provided leads marked "XO to X3". lP -, 11. ca 1 " 19. Excitation Range Switch - The appropriate range of excitation current (18) is determined with this switch. 20. "x" Input - These binding posts couple with the provided leads.. 21. "H" Input - These binding posts couple with the provided leads. 10 om PANEL CONTROLS AND OPERATING FUNCTIONS (continued) .c 3.! ar tM an ua ls 1 1 /J-�", 1 �., ... � __ .J." 1 ca tri PANEL CONTROLS w [( i '-.- , [ .E lec I I I I lP 1 �/N U)1ll/C20131 ww I •. '." AND OPERATING FUNCTIONS FIGURE! 11 - TR800 om PANEL CONTROLS AND OPERATING FUNCTIONS (continued) ar tM an ua ls .c 3.1 • () uo uO - ca - .E lec tri Hx lP --� ww w PANEL CONTROLS AND OPERATING FUNCTIONS· TR700 FIGURE 2 12 om 3.2 GENERAL· OPERATING INSlRUCTIONS USING A SELF·CHECK PROCEDURE (Ratio 1:1) .c lR800 (Refer to Figure I) Insure that instrument power switch (2) is in down position. 2. Connect high side leads(H markings on alligator clips) to "H" input(12). Connect low side leads (X markings on alligator clips) to "X" input(ll). 3. Short all alligator ends as follows: HO to XO HI to XI H3 to X3 H2 to X2 4. If line cord is not plugged into instrument, do so now. 5. Set the lR800 instrument controls as follows Detector phasing switch: Ratio. Detector sensitivity: Midway. Phase multiplier switch: 0.1. O. Phase deviation dial: · Ratio multiplier switch: 0.1 . 10.. 0. O. Ratio switches: O. Percent deviation dial: "X" Selector switch: X3 X2. H3 H2. "H" Selector switch: Normal. Polarity switch: Test voltage selector: 12V. x 10. Excitation range switch: w ww PIN 820lll/820m - tri Ensure that personnel are kept clear of alligator clips. Clips should. be clear of ground or any metal objects, as they will be at a potentially lethal voltage. .E lec 6. - ca lP l) ar tM an ua ls 1. 7. Tum power switch ON. 8. Observe "Null Detector" needle. It should be pointing towards 0 If not, obtain centre balance by adjusting "Percent Deviation Dial". Dial should remain at approximately "0" (± I division) with needle balanced at centre "0" position. 9. The excitation meter should read approximately "0". If not, just above the "0" line. " 13 ". om 3.2 GENERAL OPERATING INSTRUcnONS USING A SELF-CHECK PROCEDURE (continued) 10. Set 'Test Voltage Selector" to 120V Re-adjust "Percent Deviation Dial". It should still balance at approximately " 0". If needle movement is too sensitive, set "Detector Sensitivity" back until needle movement is comfortable to operator (this does not affect accuracy). " ". .c I· ar tM an ua ls If all of the above goes accordingly, the instrument has been balanced to a ratio of 1.000:1. 11. Switch detector phasing switch to "Phase". 12. Observe "Null Detector" needle. It should point towards centre "0", if not, obtain centre balance by adjusting phase deviation dial (7). Dial should remain at approximately "0" (±I division) with needle balanced at centre "0" position. • If all of steps 11 and 12 go accordingly, the instrument has been balanced to ) " " Turn instrument OFF. 14. Set "R" selector to "HZ HI". Set "X" selector to "X2 - XI". 15. Turn instrument ON. 16. "Null Detector" needle should be balanced with detector phasing switch on "Ratio" and "Phase. lP 13. ca - tri ·f a phase deviation of O.O.CR (centiradians) which indicates the internal reference transformer is okay. The following steps will verify the correct operation of the "X" and H selector switches (13 & 14) and the corresponding H and X leads. 17. PIN 820111/820131 ww 1 1 w .E lec Repeat steps 13 to 15. Exchanging the following: "- HZ - HI to HI -ID. X2 - XI to XI - X3, then, b. HI -ID to HI - HO. XI - X3 to XI - XO, then, c. HI - HO to HZ HO. XI - XO to X2 - XO, then, d. HZ - HO toID - HO. X2-XO to X3 - XO. This should fully complete a self-test of the instrument as well as the test leads. - 14 om GENERAL OPERATING INSTRUCTIONS USING PROCEDURE (continued) A 3.2 GENERAL OPERATING INSTRUCTIONS USING PROCEDURE (continued) SELF-CHECK ar tM an ua ls TR700 (Refer to Figure 2) A SELF-CHECK .c 3.2 1. Insure that instrument power switch 2. Connect high side leads ("H" markings on alligator clips) to "H" input (21) (HlC, HIP, H2C and H2P). 3. Connect low side leads (20) (Xl and X2). 4. Short all clip ends as follows: HI to Xl H2 to X2 5. If line cord is not plugged into instrument, do so now. 6. Set the TR700 instrument controls as follows Detector phasing switch: Ratio. Detector sensitivity: Midway. Phase multiplier switch: 0.1. O. Phase deviation dial: Ratio multiplier switch: 0.1. Ratio switches: 10. - 0 O. is in down position. markings on alligator clips) to X " " input ca lP ("X" (2) - 1 PIN 820111/820131 ww I I w L! Ensure that personnel are kept clear of alligator clips. Clips should be clear of ground or any metal objects, as they will be at a potentially lethal voltage. .E lec 7. O. l2V. tri Percent deviation dial: Test voltage selector: B. Turn power switch ON. 9. Observe "Null Detector" needle. It should be pointing towards "0". If not, obtain centre balance by adjusting "Percent Deviation Dial". Dial should remain at approximately "0" (±l division) with needle balanced at centre "0" position. 15 GENERAL OPERATING INSTRUcnONS USING A SELF-CHECK PROCEDURE (continued) 3.2 GENERAL OPERATING INSTRUcnONS USING A SELF-CHECK PROCEDURE (continued) 10. '1 1 -I 1 12. Observe "Null Detector" needle. It should point towards centre "0", if not, obtain centre balance by adjusting phase deviation dial (7). Dial should remain at approximately "0" (±1 division) with needle balanced at centre "0" position. This should fully complete a self-test of the instrument as well as the test leads. ca tri .E lec w PIN 820111/820131 ww 1 1 Switch detector phasing switch to "Phase". lP '! 1 l( 11. If all of steps 11 and 12 go accordingly, the instrument has been balanced to a phase deviation of 0.0 CR (centiradians) which indicates the internal reference transformer is okay. - I 1 1 1 Set "Test Voltage Selector" to "120V". Re-adjust "Percent Deviation Dial". It should still balance at approximately "0". If needle m�vement is too sensitive, set "Detector Sensitivity" back until needle movement is comfortable to operator (this does not affect accuracy). If all of the above goes accordingly, the instrument has been balanced to a ratio of 1.000:1. -I f I .c 3.2 ar tM an ua ls '1 om ., 16 1 1 1 1 1 1 ]C) 1 1 TWO-WINDING 1. Insure that instrument power switch (2) is in down position. 2. Connect high side leads ("H" marking on alligator clips) to "H" input (12 & 21). 3. Connect low side leads ("X" markings on alligator clips) to "X" input (11 & 20). 4. Assuming the transformer under test has the following markings: ca Set the instrument controls as follows: Detector phasing switch: Ratio. Detector sensitivity: Midway. Phase multiplier switch: 0.1. O. Phase deviation dial: . Ratio multiplier switch: 0.1. Ratio switches: S. - 0 - O. Percent deviation dial O. "X" Selector switch: X2 - Xl. "H" Selector switch: H2 - Hl. Polarity switch: Normal. 12V. Test voltage selector: x 10. Excitation range switch: w .E lec 6. Ensure that the remaining leads (H3, HO, X3, XO) are free and clear of the test transformer and any grounded points, as they may accidentally be energized. tri 5. lP FIGURE 3 Connect the TRSOO leads to the corresponding markings: - H1 to Hl. - Xl to Xl. "H" Leads "X" Leads - H2 to H2. - X2 to X2. PIN 820111/820131 ww J om I MEASUREMENT O F SINGLE-PHASE, TRANSFORMERS (Refer to Figures 1 and 2) .c 3.3 ar tM an ua ls I J- 17 om MEAS U R EMENT O F SINGLE- P H ASE, TRANSFORMERS (continued) 3.3 MEASUREMENT OF S INGLE-PHASE, TWO-WINDING TRANSFORMERS (continued) TWO- WINDING .c I l 3.3 . i 1 ar tM an ua ls It should be noted that the test voltage, 12V is used in this application to achieve an approximate balance, and therefore ratio, unless test specimen is a current transformer where upon 12V is used to achieve final balance as well 7. Ensure that personnel are kept clear of alligator clips and test transformer. 8. Turn power switch ON. 9. Observe "Null Detector" needle (17). It will be pointing to the left side of the meter. (If not, check polarity switch (normal) and lead connections ("H" on high side and "X" on low side». 10. While still observing "Null Detector", tum ratio multiplier switch clockwise until null detector (17) swings to the right. Turn ratio multiplier switch counter-clockwise one position. Needle swings right on "10" multiplier. Switch should be placed in "5" multiplier before continuing to next step. lP ego With the ratio in approximate range (needle pinned to left), rotate left most ratio switch (9) cloc1cwise (start on "8") until null indicator swings right. Turn ratio switch back one position. 12. Rotate middle ratio switch clockwise (start on "0") until null indicator swings right. Turn ratio switch back one position. tri ca 11. Rotate right most ratio switch clockwise until needle either right or comes to a balance in the centre of the meter. w .E lec 13. ww PIN 820111j820131 swings 14. If null detector needle is still settled either left or right of centre, rotate percent deviation dial (10) until needle balances to zero. 15. Switch detector phasing switch to " Phase". 16. Adjust phase deviation dial (7) until "Null Detector" (17) balances to centre "0". 18 om TWO- WINDING M E A S U R EMENT OF SINGLE-PHA S E , TRANSFORMERS (continued) 3.3 MEASUREMENT OF SINGLE, TWO-WINDING TRANSFORMERS (continued) .c 3.3 If balance is not possible, switch phase multiplier switch to "I" and re­ ar tM an ua ls 17. attempt step 16. 18. i Once balance is achieved, set ''Test Voltage Selector" to "120V" and re­ balance. (Adjustments should be minimal). 120V should only be used for C.T.s that have sufficient core to handle this voltage. Otherwise, 12V is used on ITs. EXAMPLES OF DIAL INTERPRETATION After the ratiometer is balanced, the ratio of the transformer under test is determined as follows: IT ratio deviation dial is not used, i.e. set· at 0, then; () Ratio = Multiplier x Reading on Ratio Dials 1. If multiplier is 0.1 and ratio dials read 17.32, then: 0.1 x 17.32 ca Ratio = = 1.732 or 1.732:1 If multiplier is 0.5 and ratio dials read 10.02, then: tri 2. lP Examples: = 0.5 x 10.02 = 5.01 or 5.01:1 PIN 820111/820131 ww (- w .E lec Ratio I 19 MEASUREMEN T OF SING LE-PHASE, TRANSFORMERS (continued) TWO-WINDING .c 3.3 om I I If ratio deviation dial (10) is used for balancing, determine ratio as on previous page and multiply obtained ratio by a factor 1000 + D to obtain e xact value. 1000 I I 1. ar tM an ua ls Examples: If ratio dial reads 10.00, multiplier is 2.0 and deviation dial reads + 1.5, then: Ratio = 2 x 10.00 x 1000 + 1.5 1000 = 20.00 x 1001,5 1000 = 20.03 fj J Examples: J lP The ratio deviation dial is most useful when percent deviation from a predetermined value has to be determined. If the deviation dial reads positive then the ratio of the transformer under test is higher than the preset value. Similarly,if the ratio of the transformer under test is lower than the preset value, then the deviation dial will read a negative value. = = = tri I ca Name plate ratio 4800 volts to 120 volts. Ratio 40.00 Set multiplier and ratio dials to obtain a ratio of 40. Two possibilities exist: M 2, R 20.00(19 + 1 + 0) or, M = 5,R=8.0(8 + 0 + 0) J .E lec Now balance only with ratio deviation dial. Deviation dial reads in mils (1 mil = 1/1000 or 0.1%) as to how high or low the ratio is from nameplate. .I When obtaining ratio readings, the second and third ratio dials may e xceed 9. If that occurs they should be read in the following manner: 9.09 8 + 10 + 9 19 + 11 + 10 20.20 10.10 10 + 0 + 10 J w leI I ww PIN 8201I1f82()13l = = = 20 3.3 PHASE ANGLE BALANCE 'I 'I 'I 'I , 3.4 TEST USlNG TR700 1. ), 1 2_ 1 tri .E lec w PIN 820111/820131 ww t, 'I 1 Regnlators (See Figure 5) Make connection as shown in figure 5, connecting: L S toX2 ii. L to (HZC + HZP) w. SL to (H1C + HlP) + Xl Follow steps of section 3.3 to complete the test. , 'I 'I 'I Auto Transformers (See Figure 4) Make connection as shown in figure 4, connecting: 1. H1 to (H1C + HlP) Xl to Xl ii. w. HO to (HZC + HZP) + X2 Follow steps of section 3.3 to complete the test. 'I , SlNGLE PHASE AUTO TRANSFORMERS AND REGULATORS lP , One centiradian is equal to 34.37 minutes. To convert the phase angle deviation dial from centiradians to minutes, multiply the dial reading by 3.437 when operating on the 0.1 multiplier and by 34.37 when operating on the 1.0 multiplier_ 1 1 ar tM an ua ls , TWO-WIN D I NG The phase deviation dial reads directly in centiradians regardless of ratio, as long as proper multiplier (0.1 or 1 .0) is applied. In normal testing, phase deviation should be minimal. Excessive dial readings from normal should be investigated because they indicate possible shorted turns, presence of circulating current paths, or other errors. ca , M E A S U R E M E N T O F SINGLE-P H A S E , TRANSFORMERS (continued) .c 1 om �I 21 I 1. Auto Transformers (See Figure 4) J J 2. ar tM an ua ls Make connection as shown in figure 4, connecting: 1. HI to HI li. Xl to Xl iii. HO to HO + XO Follow steps of section 3.3 to complete the test. J Regulators (See Figure 5) Make connection as shown in figure 5, connecting: i. S to X2 li. L to H2 iii. SL to HO + XO Follow steps of section 3.3 to complete the test. J J J J( ) lP J ca J J J J w t, .E lec tri J PIN 820111/820131 ww J .c TEST USING 1R800 .- J om J 22 AND REGULATORS .c SINGLE PHASE AUTO lRANSFORMERS (continued) om 3.4 TR700 I ar tM an ua ls HlP � �I 1 1 Transfacrer under test TR800 HI TRBOO XI LEAD XO .E lec HOXO tri ca 1 I XI lP TRANSFORMER UNDER TEST � LE:AD HI LEAD I-!n I .AD w CONNECTION OF A SINGLE PHASE AUTO lRANSFORMER ww PIN 820111/820131 FIGURE 4 23 H X 5 H2 (H2P+H2C) L Source Bushing load Bushing ar tM an ua ls [ .1 J I J om X2 .c [- SINGLE PHASE AUTO TRANSFORMERS AND REGUlATORS (continued) 3.4 SL COIIIn IIO Bushing HI+XI (HIP+HIC) :::: r-��=: :;t--\ :::=�TA;'P�CHAH GER AUTtl1ATICAlLY C(VfTR(l.LED "-.;..r- SOURCE BUSHING V(l.TAGE MISE .-W-;:� rJ J J J r.J-.---'�� lP L-��:���� __ ca tri SHUNT WINDING lec .E w RfYERSING SWITCH CURR[HT TRAHSFORMERTO LINE-DROP COMPENSATOR I' C�T01 LOAD BUSHING L RIDGING REACTOR SOURCE ww ::..., ...... _ l!:=�::����=::�-=� PIN 820111/820131 5.ERIES WINDING ONE TO CONTRa.. LOAD POTEltTIAL WINDINGS � STEP SOURCE-L� BUSHING . VOLTAGE REGUlATOR FIGURE 24 5 DETERMINING TRANSFORMER NAMEPlATE DATA CONNEcnONS om I J 3.5 USING ONLY .c For most transformers, a connection diagram is available from our Table I, for these transformers, one needs only match the correct figure from the nameplate with the corresponding figure on our chart and follow the instructions. EXAMPLE 1: ar tM an ua ls For many utilities, different nameplate diagrams make it impossible to always find a corresponding figure on our Table I. To assist in determining the correct connection and testing of any transformer, the following explanation will assist in self cbecking one's work. DETERMlNlNG IN-PHASE "X" AND "H" VECTORS For this diagram, one must determine two lines which are PARALLEL to each other. For example, HI-H3 is parallel to X2-XI. Only HI-H3 will ratio against X2-XI. The polarity is also important and is noted by the order of the pbase mentioned i.e. HI-H3 is opposite polarity to H3-HI. lP ca tri lec .E "Ii"SWITCH ")("SWITCH POLARITY HI-H3 H2-HI H3-H2 X2-XI XI-X3 X3-X2 Normal Normal Normal For the TR700, each connection is made as a single phase transformer. PIN 820111f820m ww J FIGURE 6 In connection to the TR800, an operator would typically connect the leads as marked to the corresponding bushings i.e. HI to HI, H2 to H2 etc. therefore in testing this transformer, the following test positions on the "X' and "H" switches of the TR800 would be used: w r� I J I J J J X2 �-XI HI XI HI� H3 X3 H2 25 DETERMINING TRANSFORMER CONNECTIONS om 3.5 USING ONLY .c NAMEPLATE DATA (continued) EXAMPLE 2: USE OF JUMPERS (Le_ no neutral accessible) In some cases, parallel lines on a transformer diagram are not apparent, or is most often the case, a neutral connection is not available and hence no test appears possible_ ar tM an ua ls as X2 I - XI----< HI; X3 H3 FIGURE 7 lP ca tri .E lec PIN 820111/820131 ww {- HI-H3 can now be compared to Xl-(X2 jumpered to X3)_ The ratio measured by the TR800 will be higher than the nameplate ratio. To obtain the multiplier, refer to Table I for a similar configuration. w I 1 1 -I -I -, t In the above diagram, HI-H3 is parallel to XI-XO, but with no XO available, an alternative method must be used_ By jumpering X2 to X3, a cancelling effect of the upward action of X2 with the downward action of X3 is obtained and a resultant direction is parallel to XI-XO_ 1 26 TIlREE PHASE 1RANSFORMERS (Two Windings) om 3.6 .c In testing three phase transformers it is necessary to pay special attention to the relative phase relationships and winding connections. ar tM an ua ls Table I has been devised to simplify taking the ratio measurements of three phase transformers with single phase excitation. The nameplate voltage ratio (R) is the ratio of the HV line-tOoline voltage and the LV line-to-line voltage. Table I shows the relationship between the measured ratio and the actual ratio based on line-to=line voltages. Even though neutrals may not be accessible, it is possible to determine ratios with only minor changes in the test method. This also permits the testing of zigzag windings without available neutrals. It should also be noted that if the connections are made according to Table I, the relative phase rotation of the HV and LV can be verified. The step by step procedure described in section 33 should be followed for checking ratio, polarity and phase rotation. 3.7 Ratio tests on three phase auto transformers are carried out on a single phase basis following the same general procedure as described for single phase auto transformers. Connections shown in Table I between tbe ratiometer and transformer being tested should be observed with care. The step by step procedure for obtaining ratio, phase rotation and polarity is similar to that described in the previous sections. Make sure that while conducting the tests with Model TR800 (with 3 phase switching) XO lead from the instrument lead bundle is not connected to HO-XO terminal of transformer being tested. lP (" ". -� tri lec .E PIN 8201Il/820131 ww I I w 1 ca I I 1 1 I THREE PHASE AUTO TRANSFORMERS 27 om LOW VOlTAGE (ll DIRECT (H) , , 7 70 S 9 HO lID :[>X1 " Xl H, x � � x, x .E ,. ,.. x � � w 11 ww I s. � 2 - , 2 - , ' - -- -- -- . , - . , - 2 , - • 2 - • , - • , - • 2 - • , - . • , - , , - , 2 - , , - 2 " " " , - , 2 - , , - 2 2 - , , - 2 - " - '" - " , - • 2 - • , - • -- - - " " " - K1 - K2 K2 - III III - K1 -- , - , 2 - , , - 2 , - Xl K1 .2 K3 MOTES Singl. Pha,. Trwwfonaer - , - -- K2 III K1 - , 2 - , , - 2 , - , , - , 2 - , , - 2 , - , 'yO (Y'1'6) /1' 2 .. P Il ..! Il .. P Il /1' "' , - 3 2 - , " , - 3 2 - , .. P Il 2 3 - 2 , - 3 2 - , 3 - 2 3 - 2 , - 3 2 - , 3 - 2 2 - , 3 - 2 ' - , 2 - , 3 - 2 , - 3 , - • 2 - • 3 - • TABLE I -- <30· «210·) <30· «210') -- - -- <210' -- 2 -- ' /1' 2 "' (<(210') No Accesslbl. lleutral <30. -- «30·) NO Accessible Neutral <30' , - . 2 - • , - . - Neutral (Ty6> , - , 2 - , , 110 Accessible 'yO 2 - , , - 2 - , - 3 2 - , , - 2 " " " , Voltage Regulator -- , 2 , - 2 -- " " -- • • 2 - , , - 2 �Xt • , - , 2 - , , - 2 K1 - H2 H2 - ., III - K1 " " " WE IIOTATIoeI RATIO , - , 2 - , lP , , ca 4 lL " -- tri , r: l: !: T Ix>o. ..... " 1.. ft<.J: J:" �X1 ,)t ,,�x: �AHl ' HAHl "<1: 1 Ht);:KJ C>" "Xl � l"'D>X"3 �: I .! p<2� � ��,l' XX31 ...J:., ""'�X3 X3� � I..J: : Xl "--( " .. �'" I 22 22. ww I 21 w I .E lec 20. I • • ·. Xl · Xl · " 3 1 . " " 1 2 2 3 3 1 2 2 1 • • • • • ...E IIOTATIOI lATiO 3 1 2 3 1 2 3 • 2 1 2 3 · · , , , 1 2 3 · 3 · 1 · .2 3 1 2 1 2 3 , , , 1 · 2 · 3 · 3 3 1 2 · 3 1 · "" • (D%6) _l' " · • • • 1 · · · · 2 3 · 1 · · 3 1 2 · 1 3 · 2 " " Xl 1 2 3 • • · 3" 1 2 2 • · · 3 1 2 .. '" � 2 NOTES No Acen,fbL. lleutnl <30' « 210·) 3 1 • , , , • · 2 · · · · , , , 2 3 1 '" � " , , , 2 1 · 2 · 3 1 2 1 · 3 2 · 1 3 · 2 3 1 2 1 2 3 1 2 3 · , 2 · , 3 · , .(3 . 3 1 2 3 1 .1 ' .. M3 - H2 N' - M3 H2 - ", 3 · " 1 · Xl · '" 2 · ", . " 3 · Xl ' 2 ·. 3 1 " . H2 " . " " H2 • Xl " X3 • . - 1 2 3 • • • • · 2 • Xl 1 · " 2 · xt 3 · 3 1 2 2 1 3 · • • • • • 2 3 1 3 1 " · 3 · 1 · 2 1 1 3 • · 2 • 1 · 3 2 · 1 3 · 2 TABLE I ,,. Coy11) ,,. ,,. (Dy1 1 ) Ydl1 . ndS) Ydl1 i P 2 netS) Tdl1 .1 ' " .(3 iII 2 <30' (<210") NeutraL <30' L.V. Side « 210·) on 11 0 Accessible NNtril on It.V. "do ThrH,Phase .. .\l ' 2 2 .. COyll) 1 · 2 · 3 · · NeutnL No AccessibLe .. .1 ' 3 1 · No Accessible .. ..! " " · N2 1 · 3 " " 2 1 N2 · N1 3 · 2 .... ' ", VALUE Of , lP X1 • · 1 ·. ca ,.. Xl • 3 2 tri I. NO · • 1 · 2 · 3 HOXO Xl . Xl ' � X1 17 . H2 ' XJ\lx. � "+--Xl ..D.., �nl\Hl �: :� �DH �: y � J>" "<1:,X1 x. 1 2 ·. X2 h :� XL(: h "� XL(: H1 , (REVERSE) MEASURED om (H) $\IITCM JlMPER ar tM an ua ls 12 VOLTAGE .c LOW VOlTAGE el) NIGH flWIIE (TdS) ,,' (Tl.l 1 ) Tzl1 (TIS) hl1 (lIS) (continued) Auto-Transformer om I INTERPRETATION AND PROPER USE OF TIIE RATIO DEVIATION DIAL .c 3.B PURPOSE OF DIAL , j ar tM an ua ls The Deviation Dial simplifies the determination of % ratio error for transformers. ANSI specifications allow a maximum of ±O.5% error or deviation from nameplate ratio. Instead of using nameplate vs measured ratio and calculating the % deviation, one need only set the nameplate ratio of the TRBOO dials (see example below) and adjust only the deviation dial until balance is obtained. This gives the operator an immediate indication of magnitude of the deviation and simplifies his written entry on his test report. I I � EXAMPLE . . Nameplate Ratio: 4BOO volts to 120 volts Ratio 40:1 = I \ 1. Set multiplier and ratio dials to obtain nameplate ratio. 2. Mult. 3. Now balance only Ratio Deviation Dial. Dial balances at -1.2. , lP Ratio Dials = B + 0 + 0 The Deviation Dial reading must be multiplied by 0.1 to obtain % ratio error (indicated on front panel). This indicates the ratio error is -0.12% from nameplate. tri 4. 5 ca NOTE: = lec In the old method of testing, the Ratiometer would balance at 39.95 to Operator would apply formula: Marked Ratio- Measured Ratio x 100 Marked Ratio I •• ( .- PIN 820111/820131 ww ' w .E therefore, 40,0 39,95 x 100 40.0 .! - = -0.12% 30 1. om INTERPRETATION AND PROPER USE OF THE RATIO DEVIATION DIAL (continued) 3.8 INTERPRETATION AND PROPER USE OF THE RATIO DEVIATION DIAL (continued) .c 3.8 I 1 I l 1 r' POSITION 1 2 3 4 5 6 7 8 9 lP -1 . 2 - 1 . 0 0.8 0.6 3 . 5 -0 . 4 0.0 0.1 -1.0 -0.8 ca .E lec w PIN 820111/820131 ww I 40.0 40.5 41.0 41.5 42 . 0 42 . 5 43.0 43.5 44 . 0 B tri I \ PHASE DEVIATION C A -0 . 2 -0 . 1 -0 . 2 2 . 9 0.1 -0 . 8 B - C CURRENT InA A - - - - - - - 25 - B - - 8 - Only high readings of phase and excitation current are recorded. 1 I RATIO EXCITATION PERCENT DEVIATION A 1 1 NAMEPLATE TAP ar tM an ua ls When filling out test sheets, much less written work using the deviation dial is required. e.g.: 31 C - 8 - om CURRENT TRANSFORMERS 3.9 .c BUSIDNG CURRENT TRANSFORMERS Bushing current transformers (BerS) can be tested for their ratio and phase angle characteristics with the TR700 and TR800 ratiometers. This checking I. Receiving inspection of Bushing Current Transformers. 2. Testing of Bers after they are mounted on transfonner or circuit breaker covers, before cover is assembled to the main t�. This test , is normally done to: a. , Check whether the ers are mounted with proper polarity with respect to the bushing lead, and; b. , To make sure that the secondary leads from the CT are brought . out to the proper terminals. 3, Testing Bers after they are installed in transformers if their performance is suspected. " I r- Xl � XS H2P Transfacner IDIar _ PIN 820111/820131 ww ( (feed t:hn:oJgh) .E lec , Primary HlP X4 w , X3 Xl tri X2 ca lP . ar tM an ua ls is particularly useful for the following applications: It.Ic FIGURE 8 32 NOTE: A current transformer is connected backwards, as compared to a potential transformer. That is, the H leads of instruments are connected to the X (secondary) temtinals of the current transformer. Procedure: Run a lead (10 AWG wife) through the centre of the BCf/Cf or to the buss terminals. 2. Connect one end of this lead to terminal Xl and the other end to terminal X2 on the ratiometer. 3. Connect the secondary winding of the BCf to the HIP, HIC and H2P, H2e terminals on the ratiometer. 4. Set the test voltage switch to 12 volts. 5. Use procedure in section 3.3 to complete test. lP 1. .---- ca ' HIe HlP �-----H-+-o .E lec tri I Xl 1-----+--0 H2P H2C w BUSHING CURRENT TRANSFORMERS, WHEN MOUNTED PIN 820111/820m ww I While testing with Model1R800 Ratiometer, H and X selector switches should be set in position H2-Hl, and X2-XI. Use HV and LV leads marked HI-H2, and Xl, X2 for this test. Reversing switch should be in normal position. .c I I I 1 I om CURRENT TRANSFORMERS (continued) 3.9 ar tM an ua ls I FIGURE 9 33 om CURRENT TRANSFORMERS (continued) SCI' without removing it from the transformer: .c In order to test the 1. De-energize and disconnect the main power transformer from the 2. Short circuit the Xl, 3. source so that it can be worked on. Connect the X2 terminals on the main power transformer. ar tM an ua ls 3.9 Xl terminal of the instrument to the power transformer and the X2 HI terminal of the terminal of the instrument to the H2 terminal of the power transformer. 4. Connect the HI terminal of the instrument to the Xl terminal of the current transformer and the H2 terminal of the instrument to the X2 terminal of the current transformer. 5. Conduct the ratio measurement as described in section 3.3. NOTE: J( lP METERING CURRENT TRANSFORMERS Metering current transformers (CPs) can be tested for their no load ratio and I ca phase angle characteristics with the Model TR700 and TR800 Ratiometers. This checking is particularly useful for the following application. Discovering if internal damage has occurred on field units which may .E lec 2. Receiving inspection of new ITs from the manufacturer or recycled units from the field for incorrect nameplate ratings. tri 1. 3. have been subjected to lightning or fault currents. Check for correct polarity. NOTE: PIN 820m/820m ww I� limb except the one which includes the current transformer being tested. w l' -I 1 1 1 1 1 It is important to short circuit all the windings on the same core Connection diagram is the same as Figure is the same as in section 34 3.3. 4. Testing procedure POTENTIAL TRANSFORMERS om INSTRUMENT VOLTAGE TRANSFORMERS .c 3.10 ar tM an ua ls These transformers can be tested following the same procedure as for single phase, two winding transformers (Section 3.3). It is important to determine both the ratio and phase angle deviation to know the characteristics and correction factors for PT applications. In determining the compliance of PT characteristics for its accuracy class it is advantageous to use the % deviation dial for ratio and to convert the phase deviation dial reading to minutes. 1 centiradian = 34.37 minutes 0.1 centiradian = 3.437 minutes or, 1 minute = 0.029 centiradians, . therefore, multiply bridge reading by 34.37 to get a dial reading in minutes. For determining high voltage· PT characteristics an auxiliary 40:1 step-up transformer is available as an option (Multi-Amp Cat. No. 820118). lP It should be pointed Qut that a ratiometer test cannot be substituted for a full accuracy test conducted at rated voltage, using real burdens and a suitable. comparator. CAPACmvE VOLTAGE DIVIDERS ca This information is valid for the Capacitive Dividers and Capacitive'Voltage Dividers (CVT). I I ( PIN 820111/820131 ww r The auxiliary transformer (CVT Ratio Adaptor) increases the test voltage to 4800 volts and increases the range of the ratiometer to 80, 800: I. This ratio is large enough to test CVTs on the highest voltages used for power transmission at the present time. w J .E lec tri Due to the high interference and rather high impedance of the cvr, it is not a recommended policy to test the ratio of a CVT in a station using an ordinary ratiometer. However, the 1R700/800 ratiometers together with an auxiliary 40:1 step-up transformer can be used to measure accurately the overall ratio of the EVT in the shop or in the field if reduced accuracy is acceptable. 35 INSTRUMENT VOLTAGE TRANSFORMERS (continued) om 3.10 Cl L j ar tM an ua ls .c Figure 10 shows the connection for a typical measurement using the auxiliary transformer. It should be noted that the ratio of the CVT may be different when tested at 1200 volts than at the operating voltage due to the non­ linearity of the components used in the CVT. �;-_-I--o H2P 1..--+-o H>: _ _ J FlGURE 10 Jt ; lP ca f-":2 r- Hl X2 Xl .E lec tri Teat TrilnBformer Reterence Transformer f- H 2 Hl X2 rIXl I Bl e' I- HlP L-I- Xl X2 w PIN 820111/820131 FlGURE 11 36 H2P 1- ":0:: r TRANSFORMER COMPARATOR ww J J J J J J J ( r- Alternatively, the TR700/800 Ratiometers may be used to test separately, first the divider and then the intermediate voltage transformer. This test, however, is limited to CVf's with accessible intermed,iate voltage connections. Test Transfomer .Hl H2 Reference Transfomer �l ..H2 SUWly Transfonner lP tri .E lec When applying the transformer ratiometer as a comparator, make the connections between the reference or standard transformer, ratiometer, and transformer being tested as shown in Figure 12. Conduct the balancing for ratio and phase as described in section 3.3. J j ( w NOTE: PIN 82{)1ll/8201J1 ww I X2 Xl This connection is equivalent to the tests of an instrument transfonner at rated voltage using a calibrated reference transfonner. j I � X2' H2P H2C FIGURE 12 I • 1 X X2i 0'" 0., I HIC HlP Xl ca J X2 Xl ar tM an ua ls H2 om INSmUMENT VOLTAGE lRANSFORMERS (continued) .c 3.1 0 . It may be desirable to supply XI·X2 of the Supply Transformer from a separate and variable source. This is especially true if the tested· transformers are of higher voltage and required many VA for excitation. 37 om TROUBLE SHOOTING 4.1 SETTING OF DEVIATION DIALS .c 4. If the self check procedure (see Section 3.2) indicates that the calibration may be out, then a simple field adjustment can be implemented. Observe the instructions as per Section 3.2, 1 through 2. Remove the plastic caps on the deviation and phase angle variable ar tM an ua ls I. 10. dials, and loosen the nuts which secure the knob to the pot shaft. 3. With the phase selection switch in the appropriate position, set the dial to zero on the scale and with a screw driver, turn the pot shaft such that the null detector "is halanced. 4. Check both phase pointers (ratio and phase angle) then secure the nuts, replace the plastic caps. 5. This adjustment is for minor calibration changes, which should be expected occasionally. Major adjustment should be performed by ca lP qualified technician or at our factory. .E lec PIN 8Wl11/820131 ww I w j tri J 38 a 4.2 I QUICK REFERENCE TROUBLE CHECK TYPICAL PROBLEMS I I I I I I I I I I I I 1 1 r,-- I I TYPICAL PROBLEMS I I I I I I I A B C D E F G POSSIBLE CAUSES x x X x X X X x X X X X X X X X X X X X X X X X tri X X X .E lec X PIN 820lll/820m ww C I. X lP X w ( X X ! � X X [ Ii X X 1 t x Wrong polarity of Tx or leads reversed. Leads open circuited - check continuity. Poor lead contact on Tx. Open winding on H or X of Tx. Ratio greater than 2021:1. Leads reversed primary and secondary on Tx. Mechanical short on Tx (link closed) Could be normal check expected value. Severe problem on Tx. Test voltage is too high. . Incorrect main supply 120/240. Internal damage to bridge Connect instrument for "self-check" Loose circuit c�d or mechanical damage to instrument wiring. Instrument has incorrect internal wiring (120/240V). ca 1 ! A - Self-check fails completely. B - High phase angle reading. C - Transformer. hums or vibrates. D - Leads heat above the norm. E - Excitation meter pins. F - Breaker blows. G - Bridge will not balance. ar tM an ua ls , .c I om I 39 5.1 1 r • 1 B201 10-102 Schematic, DTII PCB AZ01 10-104 Connection Diagram, Range Extension Transformer B20110-105 Schematic, RPH PCB AZ0110-106 Schematic, OVH PCB CZ01 10-107 Schematic, TR700 CZ0130-102 Schematic, TR800 AI0130-706 Component Assembly, PWR PCB AZ0110-707 Component Assemhly, DTII PCB ca Component Assemhly, RPH PCB tri Component Assemhly, OVH PCB .E lec w PIN 820 111/820131 ww C J: Schematic, PWR PCB AZ0110-709 '. l BI0130-109 AZ0110-708 � I: DESCRIYTION ar tM an ua ls 1 1 DRAWING NO. lP 1 II DOCUMENTATION The following drawings are included for reference purposes only: 1 � om SERVICE AND MAINTENANCE .c 5. 40 -- - - ---., --.J --.J _. _ • .c om "'--"""" ,- --- [D- ll l l ( 'rb'21JI A 05 l NLOOJ 01 lNLOO) J7 .1JA7815CU . 02 .IHLOO) '04 " IN 4 003 "i""'1">--- -------. I alP tri c & l. 70)J F SOLID LINES SHOW CONNECTIONS FOR CB100� TR700, AND TRBOO I 1 U2 I' MC791SCT 06 1Nl.OOJ If'" If'F I I C4 +I j � '--i1Q:::> > ' --' .. F . ', .'---ill:> ' � J 1 �} t �.>---CI> ) - 1 5 V OUT ) J 3 >------IT:> DOTTED LINES SHOW CONNECTIONS FOR C978, 1-4400, AND MTS SOLID LINES SHOW CONNECTIONS FOR 120V)60Hz SERVICE lec ill 3 C2 +I V NOTES I Ul & � DOTTED LINE SHOWS CONNECTION FOR 2LOV, 50 Hz SERVICE .E AC LINE IN TI 229 ALO . ar tM & an ua ls . ww w � < "M' . • • ._ . . . . .... . . . . ._ . .. r I AIOI30-IOIA < 910130�I09 � E.! ,0 , ��.� =:22! ::a ' ; '0 "< < • . , e.! '0 �> , .. <, I , > , 0' " ., • • •• , , , 1 , • ,! , 07 , . , '. , ! • ., �, '< ".' ca , • .: 'J " " " " ww w • " , , < w • wZ . - . • , • . , ". " " " .E , , , . , • • " "- ". . " .. : 0, " 0• lec tri . , '. ., I /. :2 - , . . - .' ., " r- " lP " " -. . , � \� • "' " .- , ! • ., ( ( ; , " if I .J N .. • • > ��� �3 .. - , " 1" l0 ar tM an ua ls t .; -0 <, 0 0 , N 0 0 0 N '" .c < ., d! t- o d <> CQ�� " . I I " om • , • , , , • , . , , l- .; ., .. .. " . . • , o , . , . 0 > , , , 0 0 �, I ' • - ' i · · · � ; , om & F� • ... .. .c T R 800 T RANS F O R M E R U N DE R T E S T R A N G E E X T E N SI O N T R A N S FO R M E R _ r -----:::: Ir;I � Hl< 1 T R 7 00 I HIC.� t-I l P o­ ', 0- . , 0- l .- r L... ., - "0 <, . - l I I ..., I _ - ..J i ...: J _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ E X T E NS I O N _ _ 83 1 0 1 3 .lIt • •1 " .AX t .0110 .•••• .001 t t .... O' OIoMAN INnIUJlUN" LlM.UD AND A,.T ."no",.. ,"" Ollve" 01 UII. Itt ANY WAY UN�I" ...Ct••CAUT _ TRANFORMER 10 UP _ 2. � I I I -iJ I _J - + � - - - - - - - - - - - - - - - - - - -" ca Nona tOUI..N,n "II' X, >- x . " : tri ww i- I � �>- - .E lec I I ....I I ...... : : : A w I r- r N O T ES I . C O N N E C T I O N DI A G R A M F O R R A N G E U S I NG E I T H E R T R 700 O R T R B O O I I IIII I I : �: r- I JI .'f, C O M H C. ... � lP �2P o­ '"'2c:.0- [ Hc . "i r &p r 2.40V , p L.9P - <- HZP I "" · �v.ijp r '\i:p I I .Ie ,.... ar tM an ua ls . ., I om , ., • { .c • < -. r' •• , " ar tM an ua ls • • , ) - • " , , � o , -I " • , o , • , o • • • , 1 Z , • " • • ii i • • I lP , 1 ca . , N . tri , , ", ' , " )� • " � o z !o ., .E lec " 0' ww I , ,. -. 2 "! • • , " • . .; ., O· o . , , o o r � � " ' " o 0 , .' 0' • 0' ,: " " w I I I "!� , .. • ... ". ! , O� �� . ; �� � , ' • • , , . 0 ' • om .c » --------, ar tM an ua ls \-I ' " 0>1 ,..... �i·n {"'1�\ -----4�---1 X I I --!_--1 tri >.>- ca lP » . .E lec _ _ _ ww 1- w I I '" \/HUn "11 IN DATI P'.ulti-amp e 4 () \ \ � . 01 · / 1. INI./I11 "'. Non. tOLUAN'" AU' CANADA, LIMITED TORONTO, ONTARIO SCI-\ E. M �\ \ C. O V rI 'P c. I', • 0 . • . 11 I- ,, � � I! � .. 0 .,. S .. • ' · .. ._- .... ... .... .. o , .. � :: " ... . ,. • . • � • • < • , . , • - • .. . • �o � ... • · ... - .. " , · , · 0 - .. - " ... ._, . , .. · ._, _ ... .� :;; •� .. lP I 1 - � -, -I i � .. J I "; • j , • , , , w ww - - ." . · .· .· '111" j , " .. -, - • ' � .· " / ,- , • • , ; . ;:� . • ... ; . J : I ,, • · • , 1 ' 'r ' ,11 tlJ '.r I.r .. .. • , • , - .. .. < .. , 0' , o. t: '·0 - " .. i: .. I , , .. .. . . .' � �: I i • • • • .E lec j '�\:;[L# \'411" I -, I - .. ca - , tri , - • .. -- , :; � ;; : l, -I , ' �I G· •. , - . , l . _. , � !! . s·· .. .. �. ?-L ;. !� .. ••• , 0 • I .. . , - • , , " ar tM an ua ls • 0 " -. - om . .. .... . " .c , • , ._. ,�. ,. . i , , , .. 0 i • , . I I , • • • oi , r J J · , !l "" •• : � � l . i' ,� 1/ �. :: ;;;; ,!I .J! • , r'"""I" if" � w "j l " - - Ii - , ,! !, lttJ t1llt't Il L > � : -l L.: ;� _ _ ;. ; _ - _ ! , _ _ _ _ _ _ • _ 1 , 1 ; ; , ;; , , ; , "" :1 1 , .� :;::� iK] �r l: p- . _ ": ,, , _ _ _ _ l " " .: , " " ;;' r'i :i _ _ _ _, _ . . " 0' I I ;� ; .�1. �iJ I ' I . ! �� • 0, ,. ��;[ � ,Ii , , ;, ""' , � • - ( , I · ! i . . ' ' I �� � · 'i : • t9 r • �" ; � ' , • . " il 1 , , I' I, I , .II � , I � J• ; I�' iI r : 1'j� , - . I ! :1 .�. f'l"":"': � , �; .E lec J -----Y r ��# I - 0 . • '. ." • " - ;; t" � '- 7 . " - � 01 r- I-� I, - , Ji\,: . , .� , � � !� " - om il - .c i' '" .- i "' ,:. ww I . � • {- I; - lP · • , " j J j I j ,rfl - � • I j J r . tI�1I ca • . ar tM an ua ls �i F tri I Ii! , I . , . , . i ! ; , . I I I I ; : I �(I 'n � " • : I 0 . . " ) , .. om .c ar tM an ua ls I 11\ • • ..t� J, J" • �I�V I NOTES� 1 . FOR 120V , 6 0 H z S E RV I C E O M I T J9 A N D O M I T J 7 AND J 8 J I N STALL J9 lP I.C.S I N F O L LOW I N G GR D E R 445·030 M A C H I NE S C R E W I.C. K4-5B I NS U L A T O R B O A R D A N D H E ATSIN K 1 7 50 L O C KWA S H E R A N D 727 NUT 3. I N ST A L L 4. C U T THE T R ACES OF PI N S 1 3 A N D 1 7 FOR CB 100 ONLY. 5. ALL TI A F TE R BOAR D I S DEF L U X E D. DIO DES ARE lN4003 , J w 4bSl k ww j J j J ( j- A N D FOR 240V, 5 0 H z .E lec J BL E 1 tri I ASSEM ca �. ., AU NIXT I UN�'" HOllO 'O�""HC" Alit '.N,;;;'.,;:. vP 10 28 10 2 8 , .It t ,100 , .. ,WINO .ltX 1 .010 ,Jt X Jt t,OO' t o ." , �,����::��--�� Al 0 n O - 7 0 6 IT /!lUI' Nor .. COPllo. .....ODUCID 01 un, IN AN' WAY UH�I" "IC"'C"H' AurNO" I" IT O�."'H INIT.UIIII ' ''' '', LOW GAIN ZERO ADJUST om I I .c ,. Ik F ) I lP ca C4 ON PCB AFTER DEFLUX I N G 5% PROC ESS. tri 4. I NSTALL 'u ww J- NOTE� I . ALL I .C!S ARE MCI74 I C I. 2. ALL RESI STORS ARE · WATT A N D 4 3.ALL DI O D E S ARE I N 4 1 48 .E lec J J J J J J J O�,o w ,. ar tM an ua ls I J J J J ASHMILY �.c�tu•• I I,. t C HmMMCI. 11 Mut1 NO' II CO"'.,I....OOUC •• 01 U'" IN ANY WAY u.n. IHCIIKAU' 'i' iv,'''' '- ,- M S � \ O � , S 4!t - � N MA,Ct-\ I NE. �c. R.�w (4 \ \.. Oc. K ""' .o.. � \""\ E p., t�' !, p " . " � > � "' c. I;. " -�OS G P\ P,O (?o) ", ,,, e. L O 4. S. I W I T \-\ � I-\ I I': ,- 0 lP TO " "' ''- O W ", ,,- ,,, + "4 """ � e. PI '" � 5 "7 . U N L E S � M O V N -' e. O Oil ." UHun ON So-rA"T E O � Tl-t E R.\J : S E . CO M P O N I1. N 'T ,, 1 0 e. " I-\ O 'w "l I N � I O e. V l e.W. ' N St""i �\.. \... � V M ? E. "' ':. 1Q e. I=' O � t. l N S. i A � \" \ N C3 c.�. ' H E. e.O M P O N � N 'T � A�e. � U \ T � t:) FO� ON l h l S p e e. S o H, \t. t.O H ... F R. €. Q U � N C \ 'i. � E. )( c:. t:. p � � O Q, c:.. \ , c..� ", (.5. 'T HE f O L ..... a W \ N � C.CM P O N E..N"T5 o..R E.. IN$'T.o..L \"'t:,O O N ?C.� AI='7E'R 'O O P>. ? O \ � CE.H.UXe..o . C,.\ "' H �C U � 'H A. L '-. \ . C., ' 4 A'M.E. M t. \ \ � \ c:..P \. V 't R 5. l o l\J " A R A D I A L t. � 'P A C. \ \ O Po .. S O th � � \J O c.. I S v s, I;. C . c. � .E �: ffi C"-RO A.R.E ca :; . R E � \ � "": O P. � tri 2. A.\... \.. c. � . lec \. ww lL NOT E. " c � UP . C.OM ? O N E N i' A � � 'E. M � L Y w I J I J J J J 1L·_·:\���·_-Jt-- ar tM an ua ls • om ,, 0 4 .c / - P\.,p 1'-\ NO". ,000....,.c.. ";:�;,;�'�,; �, ,.u, ' .X I.'" .XlI t.no " Mun NO' 'Io,..n .. .••• t.OO' :11 0." 0' INUIUM.Nn UM"" cO" ....".OO"'CIO 01 UflO IN .NY WAT � C. B ,0,. 2. 0 1 1 0 - , 08 om I ar tM an ua ls .c I I XI • ",p • U tl aUD � , , _J[I ; .5 t: � i..J � c.. ::;. : '" Q "2. T O P c. 1?> \"'/ I T H MS- ; Oq tv'\ A � 'r-\ � t.J C � C. � E \oJ , 5 4 - 5 N \.. O c.. \o(" W A. � H E: R , k � · , S ) \4 a )C � \J T. 2. U � � · 0 0 ....... C. O P, N I N e,.. ' 3 1 4 S R, 'T \I ON. A t. \.,. O \ '=:, P L �"( c;. "'i e c;' U A,Q, C A G .o.. \ N � "T D � M A. u E. , ca tri lec I' .E - AU IN 11.. . ..-. U"lIU HOTID 'Olll"'"(.. .u, 10 CHANOI Lfa 01 w ww I: lP :. -� � I � ] .� n ( • :rn � I l�I' " I (d M P O N E: NT :' � M e. ,- Y OVH 1 1 -6 00 NO' .c... �. OI...W1Ne ,It t .lOO ,XX 1 .020 HOT I' ,X.ll i.OOI 10." , , 01 UIID IN A ... T WAY U"lU' ''''CltlCALLT 1'>.'2 0 \ 1 0 ",;-';.,"i- p c. 1?> - l O ,,\ C