Examples of charge voltage at different temperatures:
!
Charge of an STM monoblock at + 35°C:
Voltage threshold at +10°C ..............................................8.15 V
Charge temperature ........................................................+ 35°C
Temperature difference starting at +10°C ............................+ 25°C
Correcting factor of the:
Voltage thr 25°C x (– 0.015) V/°C =.................. – 0.375 V
Voltage threshold for charge at + 35°C 8.15 V – 0.375 V = .. 7.78 V
!
Charge of a STM monoblock at 0°C:
Voltage threshold at + 10°C ..............................................8.15 V
Charge temperature ..............................................................0°C
Temperature difference starting at + 10°C ............................– 10°C
Correcting factor of the:
Voltage threshold – 10°C x (– 0.03)V/°C = ........................ + 0.3 V
Voltage threshold for charge at 0°C8.15 V + 0.3 V = .......... 8.45 V
A special document concerning the charging methods recommended by
Saft is available on request from the application service.
16
STM 5-100 MR and MRE
STM 5-140 MR
First level
Constant current
20 A
28 A
0.2 C
5
A
Voltage threshold
8.15 V/monoblock
8.15 V/monoblock
Time t1
until the voltage threshold is reached
Second level
Constant current
5 A
7 A
0.05 C
5
A
Voltage threshold
open
open
Temperature
– 0.015 V/°C/monoblock T>10°C
coefficient
– 0.03 V/°C/monoblock T<10°C
Overcharge
1.15
coefficient
Recommended charge method for STM monoblocks
Summary of Contents for STM 5-100
Page 1: ...Technical manual installation operation and maintenance for Ni Cd STM MR MRE monoblocks type ...
Page 23: ...Appendix 1 20 Monoblock STM 5 100 MR G RD equipped Positive left Filling right ...
Page 24: ...21 Appendix 2 Monoblock STM 5 100 MRE G RD equipped Positive left Filling right ...
Page 25: ...Appendix 3 22 Monoblock STM 5 140 MR G RD equipped Positive left Filling right ...
Page 26: ...Appendix 4 23 Monoblock STM 5 140 MR D RG equipped Positive right Filling left ...