8521-LC-MT Bus structure module

CT Phase A Scale 

• Calibrates CT Phase A o Do NOT calibrate if generator load is under 50% of Rated. o Factory calibration will be within 1%. 

• Load generator to above 50% of Rated load 

• Measure actual generator currents with clamp on ammeter or panel ammeter.

 • Adjust until monitored current equals measured current.CT Phase B Scale 

• Calibrates CT Phase B o Do NOT calibrate if generator load is under 50% of Rated. o Factory calibration will be within 1%. 

• Load generator to above 50% of Rated load 

• Measure actual generator currents with clamp on ammeter or panel ammeter. 

• Adjust until monitored current equals measured current.

Bus PT Scale

 • Calibrates Mains/ Bus PT input.

• This input can be calibrated using the Mains Pt or the Bus PT. 

• Mains PT calibration o Measure the Mains voltage o Adjust scale until Mains monitored voltage equals the mains measured voltage.

Bus PT calibration o Measure the Bus voltage. If the BUS is dead no calibration can be done. o To get the EGCP-2 to switch from monitoring the Mains to monitoring the Bus, the generator must be started. ƒ Configure Synchronizer Mode for CHECK ƒ Close Discrete inputs AUTO and Run w/Load to start engine. ƒ Adjust Bus PT Scale until monitored voltage equals measured voltage

Synchronizer 

• Calibrates phase angle error detection of EGCP-2. • Factory calibrated for zero phase angle error between bus and mains A phase (depending on synchronizing operation) and A phase generator inputs. • With synchronizer in “check” mode, and a live bus, monitor the synchroscope menu of the EGCP-2 for “phase angle”. • Monitor Voltage across open gen contactor/breaker or panel synchroscope for phase angle error between generator and bus. • Adjust synchroscope calibration for lowest voltage across gen breaker, or 12 o’clock reading on panel mounted synchroscope.