CP CU1
CP CU1 - 1
The CP CU1’s outputs and the connected cables carry life-hazardous voltage or current.
► Always obey the five safety rules and follow the detailed safety instructions below.
Note: The safety instructions relevant to the CPC 100 and its accessories (refer to page
Preface-1) also apply to the CP CU1. This section lists safety instructions that exclusively apply
to the CP CU1.
General
► Before operating the CP CU1, read the CP CU1 Reference Manual carefully and observe
the safety rules and instructions therein.
► Before handling the CP CU1 or CPC 100 in any way, connect them with a solid connection
of at least 6 mm² cross-section to ground. Ground the CP CU1 as close as possible to the
CPC 100.
► Use the CP GB1 grounding box to connect the CP CU1 to overhead lines and power cables.
For detailed information, see the application-specific “Safety Instructions for Connecting
CP CU1 to Power Lines” in the CP CU1 Reference Manual.
► When using the CP GB1, ground it near the place where the connection to the test object is
made. Make sure that the grounding stud is in good condition, clean and free of oxidation.
► Make sure that all studs and cables of the CP GB1 are screwed tight.
► Make sure that the test object’s terminals to be connected to the CP CU1 do not carry any
voltage potential. During a test, the only power source for a test object may be the CP CU1
(powered by the CPC 100). The only exception are measurements on overhead lines as
described in “Applications” in the CP CU1 Reference Manual.
► Use the CP CU1, CP GB1 and their accessories only in a technically sound condition and
when its use is in accordance with the regulations. In particular, avoid disruptions that could
in turn affect safety.
Operating the Measurement Setup
► When using the CP GB1, ground it near the place where the connection to the test object is
made. Make sure that the grounding stud is in good condition, clean and free of oxidation.
► Life threatening voltages up to 600 V can appear on all CP GB1 contacts and on all clamps
and cables connected to the CP CU1 during the test. Keep safe distance from them.
► Before handling the CP CU1 or CP GB1 in any way (even before setting the current range
switch), make sure that the device under test (e.g. overhead lines or power cables) are well
grounded (e.g. by closing the grounding switch) near the measurement setup.
► Ensure that the short-circuit bar is always plugged in the CP CU1 IAC output whenever the
output is not connected to the IAC input of the CPC 100.
► Connect the CP CU1 IAC output exclusively to the IAC input of the CPC 100.
► Before connecting the CP CU1 with the CPC 100, turn off the CPC 100 either by the
POWER ON/OFF switch or the Emergency Stop button.
► Set the current range switch on the CP CU1 front panel only when the CPC 100 is turned
off and the test object is grounded.
► In addition to the above safety rules follow the application-specific “Safety Instructions for
Connecting CP CU1 to Power Lines” in the CP CU1 Reference Manual.
► The CP CU1 may be used only as described in “Applications” in the CP CU1 Reference
Manual. Any other use is not in accordance with the regulations. The manufacturer and/or
distributor is not liable for damage resulting from improper usage. The user alone assumes
all responsibility and risk.
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