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Gossen Metrawatt SECULIFE ST HV Manual

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GMC-I Messtechnik GmbH 21
Exception for Permanently Installed Safety Class I Devices
Attention!
!
Deactivate the electrical system which supplies power to the
device under test before connecting the test instrument!
õ Remove the mains fuses from the device under test and disconnect
the neutral conductor N inside the device under test.
õ Connect the probe to phase conductor L at the device under test in
order to measure insulation resistance.
Sequence
Attention!
!
Measurement of Insulation Resistance (equivalent leakage current)
This test is performed with a maximum voltage of 500 V, with a
current limit having been set (I < 3.5 mA). However, contacting
the terminals (3 or 2) causes an electric shock which, in turn,
may result in accidents.
Note
+
All switches at the device under test must be set to the ON
position during measurement of insulation resistance. This also
applies to temperature controlled switches and temperature
regulators.
Measurement must be performed in all program stages for
devices equipped with program controllers.
R-INS
Start measurement.
Nominal voltage is 500 V DC in this
case.
Nominal voltage can be adjusted within
a range of 50 V to 550 V DC.
Note
+
When insulation is first started from the menu, nominal voltage is
always set to 500 V. Open-circuit voltage is always greater than
nominal voltage.
Minimum Allowable Limit Values for Insulation Resistance
* for Safety Class I devices with activated heating elements
Notes
All exposed, conductive parts of safety class II and III devices, as well as
of battery-powered devices must be scanned with the probe and insula-
tion resistance and/or leakage current must be measured.
Batteries must be disconnected from their terminals during testing of bat-
tery powered devices.
Test Standard Test Voltage
R
INS
SCI SCII SCIII Heat
VDE 0701-
0702:2008
500 V
1MΩ 2MΩ 0,25 MΩ 0.3 MΩ
*
IEC 62353
(VDE 0751-1)
2MΩ 7MΩ
70 MΩ 70 MΩ
… 21 …


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