Mitsubishi Electric C Series Handling And Maintenance page 53

(7) TBM (Test button module)
1 This module is used for testing earth leakage circuit breaker remotely while applying voltage.
For time lag type, keep applying voltage for more than two seconds.
2 The voltage application system is insulated from the main circuit and SHT of MCCB can be used
commonly with the control sequence.
NV63-CW~NV250-CW, NV400-CW, NV630-CW, NV32-SW~NV250-SW, NV400-SW, NV630-SW, NV63-HW~NV250-HW
NV100-SEP, NV250-SEW, NV400-SEW~NV800-SEW, NV100-HEP, NV250-HEW, NV400-HEW, NV400-REW,
Type name
NV630-HEW, NV800-HEW
MN50-CW, MN30-SW~MN225-SW
Control input
AC100-240/DC100-240
rated voltage
Applicable
AC/DC80-264V
voltage range
Control input
Note 1. This module is manufactured for AC100-240/DC100-240V unless otherwise specified in particular.
For DC24V, specify to that effect.
Cautionary instructions for use
Note 1. For operation, apply voltage also to the right and the left poles of the circuit breaker. Testing of the circuit breaker fails unless
voltage is applied.
2. For sequence control of TBM, keep applying voltage until operation starts.
Earth leakage circuit breaker:
3. Resetting the circuit breaker while applying voltage to the TBM and closing again trips the breaker.
Reduce voltage to zero, therefore, when the circuit breaker is closed again.
4. Number of times of testing is 1,000 times. Refrain from testing over 1,000 times.
5. The distance of wiring to the switch is 100m and below.
Line
Lead
TBM connection diagram
51
(DC24V) (Note 1)
50/60Hz DC18-30V
(
High-spped type ......... 0.1sec. or longer
Time lag type ............. 2 seconds min.
Circuit breaker
TBM
TBM2 Switch
Control
power
side
TBM1
100m and below
1 VA max.
Circuit breaker
TBM
TBM2
TBM1
Port name