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To ensure the safety of users it is essential that the Earth path
(connection) should offer minimum impedance to bypass short circuit
current to ground. This is ensured by measuring resistance of the
Earth path by passing heavy current, say 25Amp. SCR Elektroniks
have developed an equipment namely Earth Contact Resistance Tester
To test the appliance as per IS standard with minimum external connections.
Description :
The ECRT essentially comprises of a current variable source
with digital Ammeter to measure the current supplied. The voltage
drop across the Earth path is measured with a digital voltmeter.
Optionally for a particular current the meter can be calibrated
in terms of resistance. A timer is provided to switch off the current
after the set time.
Features / Specifications:
| 1)
Current Source : |
0-30
A ( 10 V open circuit voltage) |
| 2)
Input Supply : |
230
V +/- 10%, 50 Hz, |
| 3)
Digital Voltmeter : |
0-20
V AC |
| 4)
Digital Ammeter : |
0-50
Amp |
| 5)
Time range : |
1 -
6 seconds |
| 6)
Separate Voltage and Current terminals |
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