Caution:
Digital input circuits should be pr
otected by a high rupture capacity NIT or TIA fuse with
maximum rating of 16 A. for safety reasons, current transformer circuits must never be
fused. Other circuits should be appropriately fused to protect the wire used.
Caution:
CTs must NO
T be fused since open circuiting them may produce lethal hazardous
voltages
4.5 EQUIPMENT CONNECTIONS
Warning:
Terminals exposed during installation, commissioning and maintenance may present a
hazardous voltage unless the equipment is electrically isolated.
Caution:
Tighten M4 clamping scr
ews of heavy duty terminal block connectors to a nominal
torque of 1.3 Nm.
Tighten captive screws of terminal blocks to 0.5 Nm minimum and 0.6 Nm maximum.
Caution:
Always use insulated crimp terminations for voltage and current connections.
Caution:
Always use the corr
ect crimp terminal and tool according to the wire size.
Caution:
Wat
chdog (self-monitoring) contacts are provided to indicate the health of the device
on some products. We strongly recommend that you hard wire these contacts into the
substation's automation system, for alarm purposes.
4.6 PROTECTION CLASS 1 EQUIPMENT REQUIREMENTS
Caution:
Earth the equipment with the supplied P
CT (Protective Conductor Terminal).
Caution:
Do not remov
e the PCT.
Caution:
The PCT is sometimes used t
o terminate cable screens. Always check the PCT’s integrity
after adding or removing such earth connections.
Chapter 2 - Safety Information P14x
20 P14xEd1-TM-EN-1
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