APC 20 - 200 KVA Keys 10, Battery key, Forced-transfer key, Alarm reset key, Buzzer reset key

Control panel (cont.)

Keys 10 and 11 key 18

These keys are used to select commands in the main menu and access the secondary messages.

Key 12

This key is used to validate the user’s choice.

Key 13

This key is used to access the main menu: display language, display- contrast setting, sound level of the buzzer, lamp test, date and time settings, inverse-video and event log.

"V" key 14

This key is used to access voltage measurements:

◗normal AC source phase-to-phase voltages;

◗bypass AC source phase-to-phase and phase-to-neutral voltages;

◗load phase-to-phase and phase-to- neutral voltages.

"A" key 15

This key is used to access current measurements:

◗normal AC source, bypass AC source and load currents;

◗percent load;

◗load crest factor.

This key is used to access the primary messages.

"Battery" key 19

This key is used to access battery measurements:

◗battery voltage (or the DC voltage on frequency converters without a battery);

◗battery current (charge or discharge);

◗battery temperature;

◗available battery backup time;

◗inverter load level (percent).

"Forced-transfer" key 20

This key is used to voluntarily transfer the load to the inverter or from the inverter to the static bypass (return transfer). Transfer and return transfer are carried out only following confirmation requested by the system display and a warning as to the risk of an interruption in the supply of power to the load.

"Alarm reset" key 21

This key is used to reset stored alarms. The system accepts resetting only when alarms have been cleared.

"Buzzer reset" key 22

This key is used to stop the buzzer. However, new alarms set the buzzer off again.

"W.Hz" key 16

This key is used to access other measurements:

◗normal AC source, bypass AC source and inverter frequencies;

◗level of active and apparent power drawn by the load;

◗load power factor;

◗inverter load level (percent).

Display 23

The display continuously indicates the system operating status.

"Anomaly" indicator light 17

This indicator light indicates the presence of anomalies.

16 - E-51028230XT/BG