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Hi,
I need some urgent help here, any advice would be greatly appreciated
While using a MGE Pulsar UPS to connect to our system, which uses a 3 phase 3 wire system, we get the "DC bus too high on rectifier" error msg. This subsequently leads to the breakdown and failure of the UPS later. Our configuration is a transformer which steps down incoming 380~500V to 220V/200V and the star point is used as the earth reference in order for the RCCB/ELCB to be effective for the protection requirement. Input to the UPS now currently is 2 phase input, i.e phase to phase 220V
I would like to ask for advice how we should hook up the UPS to the 3 phase 3 wire system, so the UPS will not fail prematurely always. The UPS technician had mentioned the earth reference was also a neutral point, and provided 110V when using this point with a phase.He suggested to use this earth reference with a phase (110V) and a step-up transformer (to step-up from 110 to 220V), which we felt was ridiculous.
Our UPS (MGE Pulsar M3000RT, i.e. rated 3KVA) topology is On-line double conversion with automatic by-pass and power factor correction
If anyone can provide some info or insight that would be extremely helpful, thanks in advance
I need some urgent help here, any advice would be greatly appreciated
While using a MGE Pulsar UPS to connect to our system, which uses a 3 phase 3 wire system, we get the "DC bus too high on rectifier" error msg. This subsequently leads to the breakdown and failure of the UPS later. Our configuration is a transformer which steps down incoming 380~500V to 220V/200V and the star point is used as the earth reference in order for the RCCB/ELCB to be effective for the protection requirement. Input to the UPS now currently is 2 phase input, i.e phase to phase 220V
I would like to ask for advice how we should hook up the UPS to the 3 phase 3 wire system, so the UPS will not fail prematurely always. The UPS technician had mentioned the earth reference was also a neutral point, and provided 110V when using this point with a phase.He suggested to use this earth reference with a phase (110V) and a step-up transformer (to step-up from 110 to 220V), which we felt was ridiculous.
Our UPS (MGE Pulsar M3000RT, i.e. rated 3KVA) topology is On-line double conversion with automatic by-pass and power factor correction
If anyone can provide some info or insight that would be extremely helpful, thanks in advance
