Startco SE-704, Руководство пользователя

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Startco Engineering Ltd. Page 4
SE-704 Earth-Leakage Monitor Rev. 2
Pub. SE-704-M, January 18, 2008.
4. SE-704 C
OMPATIBILITY
The current SE-704 has been enhanced with the
addition of non-volatile trip memory for the fail-safe
relay operating mode. Prior to hardware revision 01, a
mechanical flag was used instead of non-volatile trip
memory. The current revision of the SE-704 can
directly replace previous revision-00 units. The
hardware-revision number is listed on the SE-704
model/serial-number label affixed to the SE-704
enclosure. Both generations of SE-704 are compared
in Table 1.
The SE-704 was previously available with SE-704-01
120-Vac and SE-704-02 240-Vac control-voltage options.
These have been discontinued. An SE-704-0U universal
120/240-Vac/Vdc unit can directly replace an SE-704-01
or SE-704-02.
TABLE 1. T
RIP-
F
EATURES
C
OMPARISON
H
ARDWARE
R
EVISION
00
≥
01
LED trip indication Yes Yes
Mechanical flag trip indication Yes No
Non-volatile trip memory No Yes
Fail-safe
Trip LED: Off
Trip relay: Energized
Trip flag: Red Trip LED: On
Trip relay: De-energized
Device state after supply voltage cycled
when tripped (earth fault removed)
Non-fail-safe
Trip LED: Off
Trip relay: De-energized
Trip flag: Red Trip LED: Off
Trip relay: De-energized