- 5 -
Table 4 Breaking time of the delay earth leakage circuit breaker
(The limit non-
operating time Δt is 0.1 s, 0.2 s, 0.5 s, and 1 s)
Note: tn is the delay setting value. Only two-gear delay is provided for Inm = 125 A
and 250 A, and three-gear delay is provided for Inm = 400 A and 630 A.
2. See Table 5 for the interruption characteristics of inverse time operation
of the earth leakage circuit breaker for power distribution.
Table 5 Interruption characteristics of
the inverse time operation of
the earth leakage circuit breaker for the power distribution
Test current
name
Set current
multiple
Conventional time
Initial state
In≤63A
In>63A
Conventional
non-tripping
current
1.05In
≥lh
≥2h
Cold state
Conventional
tripping current
1.30In
<lh
<2h
Thermal state
3. See Table 6 for the interruption characteristics of inverse time operation
of the earth leakage circuit breaker for motor protection.
Table 6 Interruption characteristics of the inverse time operation of
the earth leakage circuit breaker for the motor protection
Test current
name
Set current multiple
Conventional time
Initial state
Conventional
non-tripping
current
l.0In
≥2h
Cold state
Conventional
tripping current
1.2In
<2h
Thermal state
4. The instantaneous operation characteristic of the earth leakage circuit
breaker for power distribution is set to 10 In, and the instantaneous operation
characteristic of the earth leakage circuit breaker for motor protection is set
to 12 In, and the setting accuracy is ±20%.
5. See Table 7 for mechanical and electrical operation performance.
125, 250
125, 250, 400, 630
400, 630
