High Temperature Series Nickel-cadmium Vt F 70

Transcript

High Temperature Series Nickel-Cadmium VT F 70 The VT F 70 is designed to accept a permanent charge (C/20) for a minimum of 4 years in high temperature environments (up to + 55 °C) such as security lighting devices. To meet customers ’ requirements, Saft will provide custom-designed and standardized batter y packs. Electrical characteristics Nominal voltage (V) 1.2 Typical capacity (mAh)* 7700 IEC minimum capacity (mAh)* 7000 IEC designation For your batter y design and system needs, please contact Saft's engineers. Applications • Emergency lighting • Professional lighting • Memor y back-up systems • Security devices Main advantages • Good charge ef ficiency at high temperatures • Permanent charge • Good storage retention Technology • Sintered positive electrode • Plastic bonded negative electrode KRMT 33/91 Ω) Impedance at 1000 Hz (m 5 * Charge 16 h at C/10, discharge at C/5. Dimensions Diameter (mm) 32.15 ± 0.10 Height (mm) 88.8 ± 0.4 Top projection (mm) 1.4 ± 0.4 Top flat area diameter (mm) 5.6 Weight (g) 210 Dimensions are given for bare cells. Charge conditions Rate Time (h) Standard 16 Permanent Temp. (°C) Charge current (mA) + 15 to + 55 700 + 15 to + 55 350 Trickle* 175 to 235 * T rickle charge follows full charge. Temperature range in discharge - 20 °C to + 70 °C Storage Recommended: + 5 °C to + 25 °C Relative humidity: 65 ± 5% Maximum discharge current Continuous (A) at + 20 Peak (A) at + 20 °C 20 °C* 150 * Peak duration: 0.3 second - final discharge voltage 0.65 volt/cell. 32.15 1.4 0.8 1.8 0.7 1.7 0.6 1.6 0.5 1.5 Current cell 1 Current cell 2 Current cell 3 Voltage cell 1 Voltage cell 2 Voltage cell 3 0.4 0.3 1.4 1.3 0.2 1.2 0.1 1.1 0.0 1 0 5 10 15 20 25 Time (h) 30 35 40 45 50 Current evolution versus charged capacity (charge at 1.65V at - 20°C) 0.9 Current cell 1 Current cell 2 Current cell 3 0.8 0.7 0.6 Current (A) 88.8 0.5 0.4 0.3 0.2 0.1 0.0 0 2 4 6 8 Charge capacity (Ah) 10 12 Charged capacity versus charging time (charge at 1.65V at - 20°C) 12 Charge capacity (Ah) 10 8 6 4 Charge capacity cell 1 Charge capacity cell 2 Charge capacity cell 3 2 0 0 5 10 15 20 25 Time (h) 30 35 40 45 50 Discharge at 12A at different temperatures after fast charge, at 4A Data are given for single cells. Please consult Saft for utilization of cell outside this datasheet. Data in this document are subject to change without notice and become contractual only after written confirmation by Saft. Saft Rechargeable Battery Systems 12, rue Sadi Carnot 93170 Bagnolet - France Tel.: +33 1 49 93 19 18 Fax: +33 1 49 93 19 68 Email: [email protected] www.saftbatteries.com Available capacity (% C) 90 80 70 VTCs 1500 60 50 40 Other VT 30 20 10 0 - 10 0 10 20 30 40 Charge and discharge temperarure ( 50 °C) 60 DOC. N° 11096-2-0604 - Published by the Communication Department - SAFT S.A. stock capital 31.944.000 euros - 383 703 873 RCS Bobigny - Designed by KRPLUS [24370] - Photo credits Saft 5 Voltage (V) Current evolution versus charging time (charge at 1.65V at - 20°C) Current (A) Typical performances For graphs shown, C is the IEC capacity . Dimensions are in mm.