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GDP-5H A.C. GENERATOR — PARTS & OPERATION MANUAL — REV. #2 (10/05/05) — PAGE 17
GDP-5H — LOAD APPLICATION/EARTH LEAKAGE BREAKER
Three Phase Load — 180 Hz
180 Hz, three phase, 230V, motor-in-head vibrators can be
operated with this generator. When operating more than one
concrete vibrator, the ON/OFF switch of each concrete
vibrators shall be turned on one at a time.
If they are switched on simultaneously, the circuit breaker
may trip or the engine may be overloaded.
The vibrators can be operated simultaneously if the total
power consumption does not exceed the rated output of the
generator (5.0 KVA).
If output (kVA) is not given on the
vibrators nameplate, approximate output
may be determined by multiplying
voltage by amperage by .
NOTE
Earth Leakage Breaker (180 Hz)
The earth leakage detection breaker (Figure 3) is used for
180 Hz application (3-phase vibrators). Before operating the
generator test this breaker to make sure that is functioning
correctly.
Figure 3. Earth Leakage Breaker
Before operating generator press earth
leakage test button.The earth leakage
breaker's earth leakage detection
sensitivity is 30 mA, and the actuation
time is 0.1 sec.
How to Use
Always conduct the following in order that the earth leakage
breaker will operate safely. Also, if the leakage breaker should
for some reason actuate, first stop the generator and then
repair or eliminate the source of the earth leakage before
resetting the leakage breaker. When setting up the generator
perform the following:
Ground the Generator
Ground the generator from its ground connector so that
resistance to ground is 500 ohms or less.
Ground the Tool
Ground the tool (load) in the same manner as the generator.
NOTE
Simply because the generator is
equipped with a earth leakage breaker
does not mean that grounding of the load
can be neglected, please be sure to
properly ground load equipment.
NOTE
Test Operation
For safety’s sake, the operation of the earth leakage breaker
should be tested periodically according to the following
procedure:
1. Start the engine and set it to
high speed
.
2. Turn the leakage breaker ON.
3. During normal operation, press the earth leakage indicator
test button on the front of the generator and observe
that indicator button pops out and the leakage breaker
trips.
4. Push the indicator button back in when resetting
.