Wiring Guidelines - Siemens SMART 7KT Manual

Installation Guidelines
1. This equipment, being built-in-type, normally becomes a part of main control panel and in such case the terminals
do not remain accessible to the end user after installation and internal wiring.
2. Conductors must not come in contact with the internal circuitry of the equipment or else it may lead to a safety
hazard that may in turn endanger life or cause electrical shock to the operator.
3. Circuit breaker or mains switch must be installed between power source and supply terminals to facilitate
power 'ON' or 'OFF' function. However this switch or breaker must be installed in a convenient position normally
accessible to the operator.
4. Before disconnecting the secondary of the external current transformer from the equipment, make sure that the
current transformer is short circuited to avoid risk of electrical shock and injury.
5. The equipment shall not be installed in environmental conditions other than those mentioned in this manual.
6. The equipment does not have a built-in-type fuse. Installation of external fuse of 0.5 A, Class gG type for electrical
circuitry is highly recommended.
7. Remove the scratch-guard from the meter display during commissioning of the panel.

Wiring Guidelines

1. To prevent the risk of electric shock, power supply to the equipment must be kept OFF while doing the wiring
arrangement.
2. Wiring shall be done strictly according to the terminal layout. Confirm that all connections are correct.
3. Use lugged terminals.
4. To reduce electromagnetic interference use of wires with adequate ratings and twists of the same in equal size
shall be made with shortest connections.
5. Layout of connecting cables shall be away from any internal EMI source.
6. Cable used for connection to power source, must have a cross-section of 1mm
current carrying capacity of 6A.
7. Copper cable should be used (Stranded or Single core cable).
For demounting the meter
SMART 7KT0307 Manual
to 2.5mm . These wires shall have
2 2
8