Transcript
EARTH TESTERS, LEAKAGE CURRENT TESTERS 3207 31/32 Insulation Polytesters
3235 11 Earth Tester
3235 11
3027 31/32
190 (W) × 122 (H) × 124 (D) mm 1.5kg
185 (W) × 120 (H) × 124 (D) mm 1.6kg
The 3207 is a transistorized multifunctional field tester having a precision movement with taut-band suspension. Insulation tester, auto earth tester, AC ammeter, and AC voltmeter functions are all combined in this instrument, making it ideal for all-round plant maintenance and a real money saver.
3207, 3235
The 3235 Earth Tester is used as a convenient test set for simple, accurate measurements of earth resistance. The earth voltage can also be measured on the galvanometer scale by positioning the selector switch.
SPECIFICATIONS SPECIFICATIONS Measuring Range: Insulation resistance—500 V/100MΩ (320731), 250 V/50MΩ (320732), earth resistance—0-15/150/1500Ω, earth voltage— 0-30 V AC, AC voltage: 70-130/140-260/280-520 V AC, AC current—0-15/30/75/150/300 A AC Accuracy: Insulation resistance—±5% of indicated value within effective measuring range except zero and rated value, ±10% of rated value for rated resistance, ±0.7% of scale length at zero and infinity, earth resistance—±3% of full scale, earth voltage—±3% of full scale, AC voltage—±1.5% of full scale, AC current—±2.5% of full scale Power Source: Eight 1.5 V batteries (IEC R6P, ANSI AA, Mignon 1.5 V or equivalent) Accessories supplied at no extra cost: 1.5 V batteries (8 pcs, built-in), measurement leads (1 pair for insulation resistance and AC V measurements), measurement leads (3 pcs, for resistance measurement), steel earth spikes (2 pcs, for earth resistance measurement), clip-on current transformer (1 pc), canvas accessory carrying bag (1 pc), instrument storage case (1 pc)
OPTIONAL ACCESSORIES B9646CE Lead with Probe Switch (1 pc./unit) For insulation resistance measurement. B9646CG Auxiliary Earthing Net (2 pcs./unit) (2 sheets in one set) for earth resistance measurement. Convenient for use in improving earthing conditions of spikes in soft ground (sand) or on hard places such as concrete where spikes cannot be driven.
Measuring Range: Earth Resistance: 0-10-100-1,000Ω (Min. Scale Div. 0.1Ω) Earth Voltage: 0-30 V Scale: Earth Resistance: 3-digit logarithmic continuous scale on measuring dial Earth Voltage: Uniform scale on galvanometer Accuracy: Earth Resistance: ±5% of 2Ω (±0.1Ω or min. one div.) in the range of 0-2Ω ±2.5% of 20Ω (±0.5Ω or min. one div.) in the range of 2-20Ω ±2.5% of 200Ω (±5Ω or min. one div.) in the range of 20-200Ω ±5% of 1000Ω (±50Ω or min. one div.) in the range of 200-1000Ω Earth Voltage: ±5% of full scale Measuring Frequency: 500 Hz Ambient Temperature Influence: Variation in indication is within one scale division of corresponding range against a temperature change of 20±20°C Battery Voltage Influence: Accuracy is maintained within specified limit even if voltage decreases to 4 V under operating conditions Earth Voltage Influence: Variation in indication is within one scale division of corresponding range for earth voltages up to 10 V at the line frequency Power Source: Four 1.5 V batteries (IEC R20P, ANSI D, Mono 1.5 V or equivalent) Insulation Resistance: More than 20MΩ at 500 V DC between terminals and case Accessories supplied at no extra cost: 1.5 V batteries (4 pcs, built-in), measurement leads (3 pcs), earth spikes (2 pcs), carrying case (1 pc), accessory storage bag (1 pc) Optional Accessory: B9646CG Auxiliary earthing net (2 sheets/unit)
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