Toshiba S2E21 - Manual (Page 53)

T O S H I B A
6.3 Bench Test
1 Test method Decision Test
circuit
(single
phase)
Operat- Gradually increase
current and record the
point current value when the
Figure 15
I
N
current
IL RUN LED begins blinking allowable
at 0.3 s intervals. temperature rise
rated
temperature rise
Operat- On check that Figure 15
ing When
time it is not either
wait, or on
-60 x TR x
clear
Apply 6 times the TR: Heating time constant
rated current
abruptly and
measure the time it
takes for the relay
to trip.
Operat- Gradually increase the Setting value Figure 15
ing current and measure the
point current value when the
relay trips.
Operat- Apply the rated Setting value Figure 15
ing current
time
2) Apply current 1.5
times the setting
value
and
measure the time it
takes for the relay
to trip.