EN
14139245.01 12/2015 EN/DE
WIKA operating instructions model T15 17
5.5 Electrical connection
DANGER!
Danger to life caused by electric current
Upon contact with live parts, there is a direct danger to life.
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The instrument may only be installed and mounted by skilled personnel.
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Operation using a defective power supply unit (e.g. short-circuit from the
mains voltage to the output voltage) can result in life-threatening voltages
at the instrument!
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Carry out mounting work only with power disconnected.
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The connected wires must be checked to ensure they are connected
properly. Only well-secured wires can guarantee a fault-free operation.
This is protection class 3 equipment for connection at low voltages, which are separated
from the power supply or voltages of greater than AC 50 V or DC 120 V. Preferably, a
connection to an SELV or PELV circuit is recommended; alternatively protective measures
from HD 60346-4-41 (DIN VDE 0100-410).
Alternatively for North America
The connection can be made in line with “Class 2 Circuits” or “Class 2 Power Units” in
accordance with CEC (Canadian Electrical Code) or NEC (National Electrical Code).
The functional galvanic isolation present in the instrument does not ensure sufficient
protection against electrical impulses in the sense of EN 61140.
Recommended tool for screw terminals
Model Screwdriver Tightening torque
T15.H Cross head ('Pozidriv' tip), size 2 (ISO 8764) 0.5 Nm
T15.R Slotted, 3 x 0.5 mm (ISO 2380) 0.5 Nm
5. Commissioning, operation
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