Mitsubishi Electric C Series Handling And Maintenance page 77

(3) Overcurrent trip test (1)
The test shall be conducted only in the following test circuits:
Use the optional breaker tester "Y-250" or else carry out the test with load current.
If the breaker tester "Y-250" is used, execute the test according to its manual. Here the testing method is
explained assuming with load current.
1 Apply AC current to the circuit-breaker from three-phase or single-phase power supply. In case of
single-phase power supply, apply the current with any two poles in series.
2 The respective LEDs on the front face of the circuit-breaker, if on, allow to confirm the respective
operational currents.
70% LED (Green): Good if continuous lighting commences within a range 60 to 80% of the current
PAL LED (Yellow): If Ip is set 0.7 x Ir, good if flashing every 0.5 sec starts within the range 60 to 80% of
OVER LED (Red): Good if continuous lighting commences within a range 105 to 125% of the current
75
A
A
A
Current regulation
resistance
setting Ir.
the current setting Ir.
setting Ir.
NF125-SGW (RE), NF125-HGW (RE)
NF160-SGW (RE), NF160-HGW (RE)
NF250-SGW (RE), NF250-HGW (RE)
NF400-SEW, NF400-HEW, NF400-REW,
NF400-UEW, NF400-ZEW
NF630-SEW, NF630-HEW, NF630-REW,
NF630-ZEW
NF800-CEW, NF800-SEW, NF800-HEW,
NF800-REW, NF800-UEW, NF800-ZEW
NV250-SEW, NV250-HEW
NV400-SEW, NV400-HEW, NV400-REW
NV630-SEW, NV630-HEW
NV800-SEW, NV800-HEW
A
Current regulation
resistance