Toshiba – Toshiba S2E21 User Manual
Page 55
TOSHIBA
Item
Test method
Decision
Test
circuit
(single
phase)
Slowly reduce the
75%
of the rated
Figure 16
ing
current and measure
current
point
the current value at
which the relay trips.
Clperat- Apply the rated
Less than 4 s.
Figure 16
c u r r e n t
time
2) Quickly change
current in one phase
to 0 and measure the
time it takes for
the relay to trip.
Apply the rated
current
f a c t o r
I
I x
IN
Figure 16
Change current in
The calculated value must be
one phase and
within
of the setting
measure the current
value.
at which the relay
trips.
Example: When the setting
value is 30%. the
calculated value
must be in the
range of 25 to 35%.
--
-
-
1 Measured current value.
102