Advertisement
WIRING SYSTEM
3.1 Wiring diagrams
Connecting converters FSD...FSG and their optional components
3.2 Description of Peripheral Devices for Main Circuit
Circuit breaker
The capacity of the circuit breaker shall be 1.5 - 2 time of the rated current of the
drive. The time features of the circuit breaker shall fully consider the time features of
the drive overload protection.
Leakage circuit breaker
Because the drive output is the high-frequency pulse voltage, there will be high-
frequency leakage current. Specialized leakage circuit breaker shall be installed at the
input end of the drive. В type leakage circuit breaker is suggested, and the leakage
current value shall be set as 300mA.
Contactor
Frequent open and close of contactor will cause drive failure, so the highest
frequency for the open and close of contactor shall not exceed 10 times/min. When
braking resistor is used, to protect the braking resistor from over-heat damage,
thermal protection relay shall be installed to control the disconnect of the contactor
at power supply side
Input AC/DC reactor
The drive power supply capacity shall be more than 600kVA or 10 times of the drive
capacity.
If there is switch type reactive-power compensation capacitor or load with silicon
control at the same power line, there will be high peak current flowing into drive
power input circuit, causing the damage of the rectifier components.
SINAMICS V50 converter
5
Operating Instructions, 04/2022, FW V1.0, A5E44777205B AB
3
Advertisement
