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Electrical Resistance Test

 

SECTION 10: Electrical Resistance Test

 

Test Procedure:

1. The testing arrangement comprises two lengths of rail not less than 1.5 meters long fixed on the rail seats of a concrete sleepers complete with all fastening components at 600 mm center place on ballast.
2. The complete assembly shall be spray with tap water. A 10 Volts AC shall be applied across two rails.
3. An ammeter shall record the electric current whilst the spraying of water is being carried out.
4. The electrical resistance of the assembly shall be calculated as follows; electrical resistance in ohms = 10 / recorded amperes.

 

Acceptance Criteria:

The assembly shall be considered satisfactory when the calculated electrical resistance is not less than 4,000 ohms.