EVR AUTOMATIC RECLOSER
http://www.entecene.co.kr
17
EN
HANCED
TEC
HNOLOGY
The control cubicle must not installed outdoors without the sunshine shield cover in the places of
solar heating.
Detailed control and relay, Please refer to our separate EVRC2A manual.
The control cubicle is shown in
Figure 3-5
on previous page.
3.9. AUXILIARY POWER SUPPLY
Auxiliary power source is derived from either of the following;
y
From an external power source of 110V and 220V supplied by auxiliary power transformer.
y
From low voltage supply connected to the utility distribution line.
y
In addition to above, it is preferred to use from an external DC 110V supply for substation
application as option.
Actually, auxiliary supply is used to operate the auto recloser through rectifying circuit and
maintain charge on the sealed lead-acid batteries.
The operation of recloser is fulfilled with the auxiliary power supply through the rectifying circuit
regardless of charging of the sealed lead-acid batteries. The battery is used for the back-up
operation of the recloser when auxiliary power supply is lost.
The battery for operating the recloser is placed in the lower part of the control cubicle and arranged
to be easily replaced.
The battery life is predicted to use for 5 years service as recommended by the battery
manufacturer’s data, but it can be shortened for its life on how it is handled and fitted with the
environments.
The battery is enough to operating the recloser for 30hours and over 500 events without external
power supply. When the batteries are nearly exhausted in showing below DC 15V when battery is
tested with load, please replace the batteries with new one as indicated in section 3.7 battery
specification or consult with manufacturer.
CAUTION:
Auxiliary Power Transformer shall be installed in the source side of user system.
External Power of EVRC2A Control shall be supplied from Source side in order to perform a
normal sequence in case that a fault line occurs. When the recloser trips, the external power of
EVRC2A Control shall not be lost.
Summary of Contents for EVR
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