IB 6.1.12.1-1C
2
7
ABB
Appendix A
General Circuit Breaker Information
Table A1 – Test Voltages for AC Dielectric Withstand-Voltage Test
Secondary (Control) Circuit
Primary Circuit
Motor Disconnected Motor Connected
Circuit Breaker
Condition
[V
AC
] [V
AC
] [V
AC
]
New
2200 1500 1000
In-Service
(75% of New)
1500 1125 750
After Short-Circuit
(60% of New)
1320 900 600
Table A2 - Control Circuit Requirements at Standard Voltages
Charging Circuit Close Circuit Shunt Trip Circuit
Average Motor
Current
Control Relay Coil
Current
Nominal Control
Voltage
Ametek Ryobi
Operating
Range
Anti-Pump Release
Operating
Range
Coil
Current
Recommended
Control Fuse
Rating
[V @ f] [A] [A] [V] [A] [A] [V] [A] [A]
120 V
AC
@ 50/60 Hz 10 4 104-127 0.15 1.5 104-127 6.5 10
240 V
AC
@ 50/60 Hz 5 2 208-254 0.075 0.75 208-254 1.15 10
48 V
DC
25 10 38-56 0.11 1.26 28-56 3.14 15
125 V
DC
10 4 100-140 0.054 0.69 70-140 1.3 10
250 V
DC
5 2 200-280 0.026 0.38 140-280 0.65 10
Table A3 - Undervoltage Trip Device Operating Conditions
Reference IB 6705 for Field Installation Instructions
Nominal Control
Voltage
Current at
Nominal
Voltage
Maximum
Pickup Voltage
(80% of Nominal)
Dropout
Voltage Range
(30-60% of
Nominal)
[V @ f] [A] [V] [V]
120 V
AC
@ 50/60 Hz 0.5 96 36-72
240 V
AC
@ 50/60 Hz 0.2 192 72-144
480 V
AC
@ 50/60 Hz 0.1 384 144-288
48 V
DC
0.3 38 15-29
125 V
DC
0.2 100 38-75
250 V
DC
0.1 200 75-150
Courtesy of NationalSwitchgear.com
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