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10
Maintenance & Troubleshooting
SIMPRO-100
130
PRIM-2400C
10.4
Power Supply Fuse
Replacement
The relay power supply is equipped with a fuse
that you can replace without disassembling the
relay. The fuse holder is located on the relay rear
panel, immediately above the power supply input
terminals, D01 – D03. Using a flat-blade
screwdriver, push the fuse holder in slightly, then
turn counterclockwise. After replacing the fuse,
insert the fuse holder into the hole and, with a
flat-blade screwdriver, turn clockwise to lock it in
place.
Replacement Fuse Specifications: T 2 A 250 V,
high breaking capacity. The following
manufacturers’ part numbers are suitable
replacement fuses:
Table 10.7
Manufacturer Part Numbers for Fuses
Contact SEL for replacement fuses if you have
difficulty obtaining an equivalent replacement
locally. Use only high breaking capacity
replacement fuses.
10.5
Real-Time Clock
Battery Replacement
A lithium battery powers the relay clock (date and
time) if the external power source is lost or
removed. The battery is a 3 V lithium coin cell,
Rayovac No. BR2335 or equivalent. At room
temperature (25°C), the battery will operate
nominally for 10 years at rated load. When the
relay is powered from an external source, the
battery only experiences a low self-discharge
rate. Thus, battery life can extend well beyond
the nominal 10 years because the battery rarely
has to discharge after the relay is installed. The
battery cannot be recharged.
If the relay does not maintain the date and time
after power loss, or if the relay self-tests indicate
an RTC Battery Warning, replace the battery
following the steps listed below.
1. Deenergize the relay.
2. Remove two front-panel retaining screws with
a Phillips screwdriver from the relay front
panel. Carefully remove the relay front panel
from the relay chassis.
3. The relay main board and display are
attached to the inside of the relay front panel.
The battery is located on the upper left-hand
side of the relay main board. Carefully
remove the battery from beneath the clip.
Properly dispose of the old battery; it is not
rechargeable.
4. Install the new battery with the positive (+)
side of the battery facing up.
Manufacturer
P/N
Comment
Schurter, Inc.
0001.2507
Original Equipment
Wickman USA, Inc. 181.1200.0.02
Bussman
5505 2A
Littelfuse
215 002
Summary of Contents for SIMPRO-100
Page 1: ...SIMPRO 100 Motor Protection Relay Instruction Manual Document No PRIM 2400C ...
Page 12: ...Contents SIMPRO 100 x PRIM 2400C ...
Page 16: ...Contents SIMPRO 100 xiv PRIM 2400C ...
Page 42: ...3 SIMPRO PC Software SIMPRO 100 40 PRIM 2400C ...
Page 100: ...6 ASCII Serial Port Operation SIMPRO 100 98 PRIM 2400C ...
Page 127: ...SIMPRO 100 Event Analysis 9 PRIM 2400C 125 Figure 9 2 Example SER Report ...
Page 136: ...10 Maintenance Troubleshooting SIMPRO 100 134 PRIM 2400C ...
Page 138: ...A Firmware Versions SIMPRO 100 136 PRIM 2400C ...
Page 206: ...D SIMPRO PC Compatibility Features SIMPRO 100 204 PRIM 2400C ...
Page 214: ...E Motor Thermal Element SIMPRO 100 212 PRIM 2400C ...
Page 230: ...F SIMPRO 100 Relay Settings Sheets SIMPRO 100 228 PRIM 2400C ...
Page 239: ......