The unit includes an automatic load discharge system that discharges the
cable under test when the output is switched off or breakdown occurs.
The internal dumping system can discharge a maximum of 1.25kJ,
corresponding to 7.5µF at 15kV. A DP20 discharge probe is also supplied
as standard with the PT15-10S, allowing cables with capacitance of up to
12µF to be discharged at 15kV.
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
The output voltage is metered by a large linear, analog instrument
scaled 0 to 15kV. The current in the test object is metered by a second
analog meter scaled 0 to 10. The meter reads 0 to 10mA directly, or 0 to
1mA when the divide by 10 push button is operated.
The HV output from the unit uses a high quality plug and socket system,
allowing for easy cable replacement. The PT15-10S is one of a range of
high voltage test systems manufactured by T&R Test Equipment. DC systems
are available up to ±30kV and AC systems up to 100kV.