12- 44 Service Manual LWE130 © BT Europe AB
Electrical system – 5000
Technical specifications
T-code Valid from serial number Date Order number
675 914369- 2005-09-23 226057-040
12.11 Technical specifications
12.11.1 Transistor regulator SEM-X
Table 14: Transistor regulator specification SEM-X
Item Value Unit Description
Rated operating voltage 24 Volts
Overvoltage limit 33 Volts 28.8 V continuously
Undervoltage limit 16,8 Volts Minimum operating voltage
Electrical insulation towards cold body 500 V AC Minimum
PWM frequency 16 kHz
Max. current of armature winding * 75 Amps for 2 minutes
40 Amps for 1 hour
Max. current of field winding 12 Amps for 2 minutes
6,6 for 1 hour
Contactor voltage 24 Volts Same as battery voltage
Contactor current 3 Amps Max
KSI input voltage, Min. 16.8 Volts
Logic input voltage >9,4; High
<9,2; Low
Volts
Operating temperature -30 to +40 °C
Overtemperature, reduction 70 °C Reduced in proportion to the rise
in temperature
Undertemperature, reduction to 80% -10 °C
Maximum temperature limit 90
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