T&R PT30-10 Mk3 High Voltage DC Cable Test System

The T&R PT30-10 high voltage dc test set is designed to perform tests on installed cable and jointing systems. The units have a variable output voltage with a maximum of ±30kVdc, with a maximum charging capability of 10mA. A zero-volt interlock is fitted that prevents the output being switched on unless the output control is at zero.

The T&R PT30-10 includes an automatic load discharge system that discharges the cable under test when the output is switched off or a breakdown occurs. The internal dumping system can discharge a maximum of 2.5kJ on each output, corresponding to 4µF at 30kV. In the event of a test object failure, the overload circuit will automatically switch off the output voltage and earth the output via the internal discharge circuit.

A manual discharge probe is also supplied as standard with the PT30-10 unit, allowing higher load capacitances to be safely discharged. The mk2 units introduce automatic 115/230V mains voltage selection, allowing easy transition between site voltages.

The output voltage is metered by two large, linear, analogue instruments marked 0-30kV. Test object current is metered by two further analogue instruments with 0-10 scale marking. The meter reads 0-10mA directly, or 0-1mA when the ÷10 push button is operated.

• ±30kVdc output voltage.
• 10mA output capability.
• Both voltage and current metered on HV outputs.
• Automatic earth system for dumping capacitive loads.
• HV output plug & socket system.
• Key operated supply switch to prevent unauthorised operation.
• Zero-volt interlock - for safety.
• Visual indication of test piece failure.
• Automatic mains voltage selection.
• Dimensions: 471 x 191 x 362mm.
• Weight: 25kg.
• T&R PT30-10 Warranty: One year.

Includes: Supply lead, discharge probe, spare fuse, PT30-10 operating manual, 5m HV output leads, 5m output earth lead.