Omicron COMPANO 100 User Manual

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3 Connecting COMPANO 100 and CP GB1 to a power cable
WARNING
Death or severe injury caused by high voltage or current possible.
For measurements on power cables COMPANO 100 must be connected to the test
object through the CP GB1 grounding box with at measurement leads of at least 10
m / 30 ft length.
For c
able impedance testing COMPANO 100 must be connected to a power cable. Due to the fact that the
near end of the cable must be disconnected from ground, there is a high danger potential and the risk for
persons and test equipment to be exposed to hazardous voltages. The following scenarios are leading to
voltages which are diverted to ground by the CP GB1 to protect the test equipment and operating staff:
• The cable under test could carry high voltage due to interference from adjacent live systems.
WARNING
Death or severe injury caused by high voltage or current possible.
• Due to miscommunication, the grounding switch at the far end could be
opened accidentally.
• Due to miscommunication, the line could also be energized from the far
end.
Note: This is a severe violation of the safety rule “Secure against re-connection”!
 Establish the responsibilities of everybody working on the asset under test.
 Make sure that everybody is made aware of the measurement on the
respective power cable.
 Provide two-way communication between the near and far ends of the
power cable.
In order to estimate the interference and check if COMPANO 100 and CU GB1 can be used for the
measurement, the following steps are recommended for preparation of the measurement. All together, four
criteria have to be checked:
• Line length
• Estimated open-line voltage
• Measured open-line voltage
• Injected test current

Omicron COMPANO 100 Specifications

General

Brand	Omicron
Model	COMPANO 100
Category	Test Equipment
Language	English