Application And Description For Ambient Equipments - Savch S900 Series User Manual

5. APPLICATION AND DESCRIPTION FOR AMBIENT EQUIPMENTS

Power supply
No fuse Breaker
Magnetic
Contactor
Power Improving
AC Electric Reactor
Input side
Noise Filter
Inverter
Zero Phase
Noise Filter
Three Phase
Squirrel Cage
Motor
Grounding
Power supply：
●Make sure voltage class is correct, otherwise inverter may be damaged.
●A no fuse breaker (air circuit breaker) shall be provided between AC supply and
inverter.
No fuse Breaker：
●Circuit breaker which complies with rated voltage and current of inverter shall be
applied as ON/OFF control for inverter. And it shall also be protective to the
inverter.
●Never use circuit breaker as ON/OFF switch for inverter.
Leakage Breaker：
●A leakage breaker shall be installed to prevent mal-functioning and to ensure the
safety of operators; to prevent the mal-functions, those of which the sensitivity
current above 200mA and action time above 0.1 sec shall be applied.
Magnetic Contactor：
●Inverters can be used without a magnetic contactor (MC) installed at the power
supply side. However, when used for external control or automatically restart after
power off, or when braking control is used, a magnetic contactor shall be applied.
●Do not use the magnetic contactor as RUN/STOP switch for inverter.
Power Improving AC Electric Reactor：
●When the output capacity is greater than 500KVA or enter-wire electricity
capacity acts, the instant jump of voltage or current will be produced, resulting to
damage the internal circuit. So it is recommended that an AC electric reactor is
installed additionally to improve function factors and decrease the power
harmonic. The wiring distance is within 10m.
Input side radio interference suppression Filter：
●The Input side radio interference suppression filter must be applied if inverter
has electronic induction load around.
Inverter：
●Input Power supply terminals R/L1, S/L2 and T/L3 can be connected without
phase sequence.
●Connect output terminals U, V and W to U, V and W of motors, if the inverter is in
forward run reference, while motor reverse runs, change any two of U, V and W.
●Never connect U, V, W to AC Power supply otherwise inverter may be damaged.
●Grounding terminals shall be grounded correctly. Category Ⅲ Grounding：below
100Ω，Special grounding：below 10Ω.
Zero radio interference suppression filter
●If specialized radio interference suppression filters are fit at inverter output side,
radiation interference and induction interference shall be decreased.
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