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.