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I N S T A L L A T I O N O F T H E S W I T C H G E A R A T S I T E
2.3.4.8 Installation of busbar current sensors
Observe the correction factors on the name plate
of the sensors before mounting. These are
required for the programming of the protection
device.
• Carefully slide the earthing cuff, the current
sensor and the earthing clamp over the busbar.
Align the components according to Fig. 2.3.4.8.1.
Attach the earthing clamp to the earthing cuff.
Attach the current sensor on the eaxorthing cuff
centrally to the busbar using the cable tie.
• Attach the earthing leads to grounding points
(e.g., welding stud bolts) of the encapsulation.
—
Fig. 2.3.4.8.1 Busbar
current sensor
—
Fig. 2.3.4.8.1
1 Earthing cuff (diameter 52 mm or 72 mm, depending on busbar)
2 Current sensor
3 Fastener strap at the current sensor
4 Earthing set (earthing clamp and fastening material)
(diameter 54 mm or 74 mm, depending on busbar)
5 Earthing leads
6 Connector RJ54 at the sensor cable
• After the assembly of all sensors has been
completed, route the sensor cables to the low
voltage compartment. In case of busbars below
a coupling and riser panel, route the sensor cable
to the low voltage compartment within the
righthand panel.
• Insert the connectors of the sensor cables
according to the circuit diagram into the sockets
of the device provided for this purpose.
80 ± 10
5
1
3
2
4
39
6
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