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Page 1.2 - 4 COMBIVERT R6-S © KEB, 2008-02

Product overview

1.2.3 Functional principle

After switching on the DC interconnection is supplied with voltage after correct initialisation phase. If the voltage

in the DC interconnection exceeds an adjustable threshold due to generative operation, the COMBIVERT R6-S

starts to regenerate the energy into the net by square-wave modulation. The COMBIVERT can synchronize to

mains frequencybyasychronizationmoduleinfrontofthecommutationthrottle,orharmoniclter,soregenera-

tion is done synchronously to the mains frequency.A sine-wave current is formed of itattheharmoniclter.The

compliancewiththerequirementsinaccordancewithEN61000-3-12issecuredonlybytheharmoniclter.

If the regenerative power decreases an adjustable value, the COMBIVERT R6-S switches off the regeneration

after expiration of a turn-off delay and it will be turn into motoric operation.

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