Power Supply; Outputs - GE B90 Instruction Manual
Ur series low impedance bus differential
system
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Also See for B90:
- Instruction manual (510 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (442 pages)
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2 PRODUCT DESCRIPTION
LOW RANGE
Nominal DC voltage:
24 to 48 V
Minimum DC voltage:
20 V
Maximum DC voltage:
60 V
Voltage loss hold-up:
20 ms duration at nominal
NOTE: Low range is DC only.
HIGH RANGE
Nominal DC voltage:
125 to 250 V
Minimum DC voltage:
88 V
Maximum DC voltage:
300 V
Nominal AC voltage:
100 to 240 V at 50/60 Hz
Minimum AC voltage:
88 V at 25 to 100 Hz
Maximum AC voltage:
265 V at 25 to 100 Hz
Voltage loss hold-up:
200 ms duration at nominal
FORM-A RELAY
Make and carry for 0.2 s: 30 A as per ANSI C37.90
Carry continuous:
6 A
Break (DC inductive, L/R = 40 ms):
VOLTAGE
CURRENT
24 V
1 A
48 V
0.5 A
125 V
0.3 A
250 V
0.2 A
Operate time:
< 4 ms
Contact material:
silver alloy
LATCHING RELAY
Make and carry for 0.2 s: 30 A as per ANSI C37.90
Carry continuous:
6 A
Break at L/R of 40 ms:
0.25 A DC max.
Operate time:
< 4 ms
Contact material:
silver alloy
Control:
separate operate and reset inputs
Control mode:
operate-dominant or reset-dominant
FORM-A VOLTAGE MONITOR
Applicable voltage:
approx. 15 to 250 V DC
Trickle current:
approx. 1 to 2.5 mA
FORM-A CURRENT MONITOR
Threshold current:
approx. 80 to 100 mA
GE Multilin
ALL RANGES
Volt withstand:
Power consumption:
INTERNAL FUSE
RATINGS
INTERRUPTING CAPACITY
FORM-C AND CRITICAL FAILURE RELAY
Make and carry for 0.2 s: 30 A as per ANSI C37.90
Carry continuous:
Break (DC inductive, L/R = 40 ms):
Operate time:
Contact material:
FAST FORM-C RELAY
Make and carry:
Minimum load impedance:
Operate time:
Internal Limiting Resistor: 100 Ω, 2 W
B90 Low Impedance Bus Differential System
2 × Highest Nominal Voltage for 10 ms
typical = 15 to 20 W/VA
maximum = 50 W/VA
contact factory for exact order code con-
sumption
Low range power supply: 8 A / 250 V
High range power supply: 4 A / 250 V
AC:
100 000 A RMS symmetrical
DC:
10 000 A
8 A
VOLTAGE
CURRENT
24 V
1 A
48 V
0.5 A
125 V
0.3 A
250 V
0.2 A
< 8 ms
silver alloy
0.1 A max. (resistive load)
INPUT
IMPEDANCE
VOLTAGE
2 W RESISTOR
250 V DC
20 KΩ
120 V DC
5 KΩ
48 V DC
2 KΩ
24 V DC
2 KΩ
Note: values for 24 V and 48 V are the same due to a
required 95% voltage drop across the load impedance.
< 0.6 ms
2.2 SPECIFICATIONS
2.2.6 POWER SUPPLY
2
2.2.7 OUTPUTS
1 W RESISTOR
50 KΩ
2 KΩ
2 KΩ
2 KΩ
2-13
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