STW20K
12440-0702-03
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DANGER!
In a non-loaded (open) secondary circuit of the current transformer STWA1 high
voltages are induced at the secondary terminals.
For primary currents > 16 A, this voltage can be dangerous for human beings.
An "open mode", i.e. operation of the current transformer without secondary wiring,
should be avoided.
Attention!
There may only one conductor be lead through the transformer!
Attention!
The connecting cable can be extended up to 50 m. When laying parallel to
power cables use twisted or shielded cables.
Attention!
The polarity of the current transformer output (white marking on the cable) must be
observed only if several current transformers are connected in series to increase the
sensitivity.
7
Installation
•
mount on 35 mm mounting rail according to EN 60715
•
wall-mount with 3 x screws M4
•
connecting wires refer to the connection plan to prevent miss-operation and malfunction.
8
Commissioning
•
Connect the device according to the connection diagram
•
Use relay outputs as required
•
Connect current transformer STWA1, STWA1H
•
Switch on supply voltage
•
Relay switches on when current > 1 A flows in all circuits
•
Relay turns off when a circuit is disconnected, not connected, or a current < 0.4 A flows.
