Temperature rise test panel for domestic switch
Specifications
Input supply : 230v ac + / - 10% , 50 hz single phase with mcb protection.
Output : current source 0 to 50 a max
Digital voltmeter : 3-1/2 digit 0 to 300v
Voltage drop indicator with range selector.
Digital temperature indicator with 12 channels.
Current controller for maintaining the output current at pre-set value.
Ct range selector for accurate measurements.
Description
The test panel is made to suit the specification as mentioned in is : 3854 of 1997 for temperature rise test.
The test panel broadly comprises of :
1. Ac constant current source ( true rms ) for 50 amps max / 5v.
2. Universal servo controller, for controlling the output current with the help of motorised variac
Assembly.
3. Digital ac voltmeter to read the primary voltage of the power transformer. It helps to eliminate the
Possibility of hunting of motor with the help of primary tap selector switch.
4. Digital temperature indicator controller - 12 channels - with thermocouples, to read the temperature rise
At different parts of the switches.
5. Digital ac voltmeter with terminals and three ranges - 0.2, 2.0 & 20 v to measure the voltage drop
Across the switch terminals while passing the specific current.
6. Range selector switch for ct to measure more accurately the current for lower as well as higher range.
7. Push buttons for test on / off with output indicating lamps.
8. Mains on mcb 2p / 10 a.
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