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During electrical installation, all rules and regulations
for power systems must be observed.
• If current transformers are used, the secondary
connections of the current transformers must be short-
circuited before the current leads to the device are
interrupted.
• The protective ground terminal of the device must be
connected to the protective ground of the panel or
cubicle.
• For connection of an auxiliary DC voltage, the correct
polarity must be used.
• All of the terminals should be checked to verify proper
connections.
• The polarities and phasing of all instrument
transformers should be checked.
• Before initial energization with supply voltage, the
device shall be situated in the operating area for at least
two hours to ensure temperature equalization and to
avoid humidity and condensation problems.
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