Salicru CV10-002-S2, User Manual

Page: 97 / 104

Appendix C Peripherial options and parts 97 - 104
C.4 Circuit breaker and electromagnetic contactor
It is necessary to use a circuit breaker (MCCB) to protect the power supply and the cable system. The rated
current of the circuit breaker should be 1.5-2 times of the rated input current of the inverter.
 Due to the inherent operating principle and construction of circuit breakers,
independent of the manufacturer, hot ionized gases may escape from its
enclosure in case of a short-circuit. To ensure safe use, special attention must be
paid to the installation and placement of the circuit breakers. Follow the
manufacturer’s instructions.
It is necessary to install an electromagnetic contactor in the input side to control the switching on and off safety
of the main circuit. It can switch off the input power supply when system fault.
Inverter Breaker (A)
Rated working current of
contactor (A)
CV10-002-S2 10 10
CV10-004-S2 16 10
CV10-008-S2 16 16
CV10-015-S2 25 16
CV10-022-S2 40 32
C.5 Input Reactors
Transient high current in the input power circuit may cause damage to the rectifying components. It is appropriate to use AC
reactor in the input side for the avoidance of high-voltage input of the power supply and improvement of the power factors.
C.6 Chokes and Sine Wave Filter
If the distance between the inverter and the motor is longer than 50m, frequent overcurrent protection may occur to the
inverter because of high leakage current caused by parasitic capacitance effects from the long cables to the ground. In order
to avoid the damage of the motor insulation, it is necessary to add chokes or a sine wave filter. If the distance between the
inverter and motor is between 50m and 100m please install chokes; if it exceeds 100m, install a sine wave filter.
C.7 EMC C3 Filters
The input EMC filters decrease the interference of the inverter to the surrounding equipments.
SALICRU configured two easy-to-install filters which are placed on the underside of the inverter.
When installing these filters, it is necessary to parallel-connect the filter to the inverter input.