This equipment is designed for use upon overhead a.c. rail electrication systems operating at 25 kV nominal voltage to indicate the presence of extra high voltages to aid safe working practices.
The c31 kit comprises the following:
- the live line indicator which comes in a tough protective carry case,
- a high voltage probe and hook – shrouded for use in wet weather,
- an 8 metre length of 50mm² aluflex cable with a rail clamp
- a battery charger for charging the C31’s internal Nickel Metal Hydroxide batteries.
The C31 incorporates a number of important safety features including; Dual independent circuitry, meaning the analogue meter and the LED indicators work completely independent of each other. If one circuit fails, the other will keep on working for your safety.
Automatic ‘Meter Prover’ operates every time the tester is turned on, proving the electrical and mechanical operation of the analogue meter.
Triple Resistor Sets ensure that, in the unlikely event of one HV resistor failing, the remaining ones are sufficient to safely protect the operator and the equipment. The resistors are tested at 40kV AC.
The 50mm² Aluflex grounding cable will safely conduct the full force of the OHL system in the event of a catastrophic failure of the equipment, such as direct contact with the overhead line. Automated Test Cert Validation, warning lights flash when test certificate has expired.
Precautions during wet weather use
Although the C31 is designed for use in all weather conditions, care must be exercised to ensure that the tester is kept as dry as practicable during use and completely dry and clean when not in use. Keep the time to a minimum that the tester is in contact with a live conductor and, in any case, do not exceed one minute.