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Mep-016d questions
- Thread starter dstang97
- Start date
If you have voltage at the lugs with the breaker off it is likely the contacts are fused.
dstang97
Well-known member
Forgot to write this: I omed out the breaker and it seems to be working fine.
I would MEG the contactor and not trust a standard VOM for this one.
The other thing I would do is flip the breaker open and close 15-20 times and see if things change.
The other thing I would do is flip the breaker open and close 15-20 times and see if things change.
dstang97
Well-known member
I'm not good with electrical can you explain Meg and vom?
Sure.
VOM is a Volt Ohm Meter. It will test restance (ohms) with a very low voltage signal. Perfectly OK for testing electronic circuits but can be fooled in "POWER" circuits. An old Simpson analog meter can be better than a nice digital Fluke for some problems. Residual voltage across a contactor is one of them.
A Megger is a Ohm meter on steroids. It will test a circuit with a much higher voltage (500v). These will show you the things that can hide from VOMs.
An alternate test is to put a small load on the generator. A 60w lamp is ideal. If the contacts are fused they will pass enough power to light up the lamp. The brightness of the lamp can help you understand what is going on. If the lamp lights with the breaker off you have a serious problem. If it doesn't you may have some dirt in there. Exercising the breaker will clean its contacts.
VOM is a Volt Ohm Meter. It will test restance (ohms) with a very low voltage signal. Perfectly OK for testing electronic circuits but can be fooled in "POWER" circuits. An old Simpson analog meter can be better than a nice digital Fluke for some problems. Residual voltage across a contactor is one of them.
A Megger is a Ohm meter on steroids. It will test a circuit with a much higher voltage (500v). These will show you the things that can hide from VOMs.
An alternate test is to put a small load on the generator. A 60w lamp is ideal. If the contacts are fused they will pass enough power to light up the lamp. The brightness of the lamp can help you understand what is going on. If the lamp lights with the breaker off you have a serious problem. If it doesn't you may have some dirt in there. Exercising the breaker will clean its contacts.
dstang97
Well-known member
Cool thanks. Do I need any jumpers to run 120v only? Also what color wires goes to which lugs?
There is a reconnection switch inside the control cabinet that must be turned to the 120V only position to get 120V only output. It is in the back right of the control box ones you swing the front panel down. Do not turn switch while the engine is running. As to the voltage on the meter it is likely an induced phantom voltage adding a light bulb inline with the meter should bleed it off.
p.s. I suggest reading the TM, but be aware the TM has numerous errors including one in the reconnection diagram.
p.s. I suggest reading the TM, but be aware the TM has numerous errors including one in the reconnection diagram.
dstang97
Well-known member
Yeah I already switched the switch in the control box. I'm getting 120v at l1+2. I also excercised the breaker and it's working fine now. I read the manuals some time ago and remembered they were horible. I'm gueing my wires are
white-L1
black-L2
green- ground stud on genset.
is this correct?
white-L1
black-L2
green- ground stud on genset.
is this correct?
truck1
Member
Also be advised the MEP-016d is capable of 1,2,and 3 phase voltage supply. Nice feature and you can regulate voltage and hertz manually. The reconnection switch MUST be operated while the unit is not running as Isaac mentioned. My reconnection switch had the contacts welded together from switching while running ( military ) . I was able to slowly work it free. Great generators. Ran mine for 12 hours to charge the battery bank on my solar system. They are built like tanks. Got 1 hour per 1\3 gallon run time. Not bad. But they are LOUD. Went through 3 Home Depot generators before this one. The gauges are inacurate on mine though. Bought a Kill a Watt to get an accurate read out.
Snap a photo of the tag on the motor. I expect the answer is going to be no. Single phase motors on compressors are really hard to start.