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P rimeGe ar Z X0 P R O D U C T M A N U A L
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5.2 Testing for the in-phase condition
Testing for the in-phase condition, e.g. when
there is more than one incoming feeder, can be
performed with a suitable phase comparator at
the measuring sockets of the capacitive voltage
indication system.
The phase comparator must comply with IEC
62243 and correspond to the technical design of
the indicator system used.
5.3 High-voltage tests
Direct access to the conductors via the fitted
cable connectors is available for the performance
of high-voltage tests. The test voltage is applied
through suitable test sets for the outer cone
connector system used.
5.3.1 Cable tests with dc
• Isolate the switchgear section to be tested in
accordance with section 4.
• Test the switchgear section for the off-circuit
condition as described in section 5.1.
• Earth the switchgear section and secure the
working area in accordance with section 4 and
EN 50110 standard.
• Switch the mcbs
mechanisms off in order to prevent the
switchgear section being energized by remote
control.
• Dismantle the cover on the relevant cable
termination compartment.
• Fit the high-voltage testing set in accordance
with the manufacturer's instructions.
Observe the instruction manual for the
phase comparator.
Do not exceed the maximum test
voltages and the maximum test duration
as specified in IEC 60502-2.
Comply with the safety regulations to EN
50110.
of the relevant operating
1)
Isolate all voltage transformers inside the
switchgear section to be tested by
operating the isolating device (see
chapter 4.4) (Isolating of voltage sensors
is not necessary).
Dismantle any surge arresters in the
relevant outgoing feeder.
Short-circuit the sockets for the capacitive
indicator system in the relevant switchgear
section using the short-circuiting plug.
• Establish the test circuit in accordance with the
manufacturer's directions for the test apparatus.
• De-earth the switchgear section to be tested
before switching the test voltage on.
• Perform the cable test in accordance with the
manufacturer´s directions for the test apparatus.
• Earth the switchgear section after completion of
parts of the test and on conclusion of testing.
• Remove the high-voltage testing set.
• Refit any dismantled surge arresters.
• Close off free outer cones with insulating
blanking plugs in accordance with the
manufacturer's instructions.
• Remove the short-circuiting plugs from the
capacitive indicator.
• Reconnect the voltage transformers by
operating the isolating device (see section 4.4).
• Refit the cover on the cable termination
compartment.
5.3.2 Voltage test of the main circuit
Perform a voltage test on the busbar after
installation. We recommend feeding in the test
voltage via an incoming or outgoing feeder panel.
Use high-voltage testing sets for the outer cones.
The test voltage can also be applied directly to
the busbars. In this case, special test plugs for
connection to the busbar adapters of any panel
are required.
In the course of testing, the test voltage
is applied in sequence to every conductor
in the main circuit, with the other
conductor earthed. Testing should be
performed with at least 80 % of the rated
short-duration power frequency
withstand voltage (UD) as stated on the
name plate. Testing with 100 % of the
rated short-duration power frequency
withstand voltage as stated on the name
plate is possible. Comply with the test
conditions as set out in IEC 62271-200 |
GB 3906.
Comply with the safety regulations to EN
50110.
• Isolate the switchgear section to be tested in
accordance with section 4.
• Test the switchgear section for the off-circuit
condition as described in section 5.1.
• Earth the switchgear section and secure the
working area in accordance with section 4 and
EN 50110 standard.
• Switch the mcbs
of the relevant operating
1)
mechanisms off in order to prevent the switchgear
section being energized by remote control.
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