Electrical Dynamo Fails When the Load is On

S

Thread Starter

syednifty

Dear All my fellow electricians & engineers,

Greetings,

I have come across electrical problem with dynamo.

The voltage is giving less, and when any heavy load operates, it trips the dynamo.

As I started with checking the copper braids connected to the brush holders.

Adjusted the copper braid for one set of brush, that was for the neutral line.

As for the three phases, there are sort of ok.

Then we started the dynamo, there was same problem.

So, I checked the brushes, they don't have proper contact, so i have again adjusted them.

Once again, we started still the same problem.
Now, this time I have checked with multimeter, i find out that
1. L1- L2 = 1.7 VOLTS
2. L2 - L3 = 92 VOLTS
3. L3 - L1 = 92 VOLTS

AND

1. L1 -N = 39 VOLTS
2. L2 -N = 25 VOLTS
3 L3 - N = 50 VOLTS

Also, i have checked continuity between the line brush holders of the line voltages and the neutral, and there is not continuity. I have checked there is very high resistance between the line voltages to the body of the dynamo.

Now, since we don't have any copper braids, lugs and the carbon brush, so, i will try again tomorrow.

Please kindly advise me some thing so that the dynamo starts running.
I will appreciate any response and thanks in advance


Thanks
Sd nifty
Electrician
 
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