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The
range includes primary and
secondary current injection
equipment up 6000A, voltage
sources, micro-ohmmeters and
high voltage test systems up to
100kV.
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The
PT15-10S high voltage dc test
set is designed to perform tests
on installed cable and jointing
systems. The unit has a zero to
–15kVdc variable output 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.
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The
unit 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 1.25kJ, corresponding
to 7.5mF
at 15kV. A DP20 discharge probe
is also supplied as standard
with the PT15-10S, allowing
cables with a capacitance of up
to 12mF
to be discharged at 15kV.
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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.
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The
output voltage is metered by a
large, linear, analogue
instrument marked 0-15kV. The
current in the test object is
metered by a second analogue
instrument with 0-10 scale
marking. The meter reads 0-10mA
directly, or 0-1mA when the ¸10
push button is operated.
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The
HV output from the unit uses a
high quality plug and socket
system, allowing for easy cable
replacement.
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