Technical information

Temperature alarm (TAL)
The electronic trip relay can be checked by this field test device when the breaker is at test position
or disconnect position. The breaker will trip when tested with this device.
Field test device (Y-2000)
Y-2000 specification
TEST ITEM
TEST SIGNAL RANGE
OUTLINE DIMENSION
TIMER
POWER SUPPLY
LTD,STD,INST,GFR,PAL
1% ~ 2500%
230(W) x 120(H) x 290(D)
0.000 ~ 999.999s
100 – 240V AC 50 / 60Hz
MCR switch (MCR-SW)
If TAL sensor is built in the breaker, temperature alarm is operative. When the temperature of main
contact exceeds normal level, temperature alarm is indicated by LED on main setting module and
also the output contact is made energize if power supply with output contact is installed.
It is possible to know temperature rising which is caused by wear of main contact because TAL
sensor is installed near main contact. When the temperature of main contact goes down to the
normal level, temperature alarm turns off automatically.
If MCR switch is built in the breaker and the dial for INST/MCR on Main setting module is set to the
range of MCR position, MCR function is operative.
MCR function:
During a closing operation of the breaker, Instantaneous characteristics is operative.
And it becomes inoperative when the breaker is in the closed position.