Time Delay

T2

Transfer Delay

Confirmation delay on source power failure

U–U: 0, 1, 2, 3, 5, 10, 20, 30, 60 s

U-G: 5 s

U-U: 3 s

U-G: 5 s

T4

Center-off Delay

OFF position delay

0, 5 s

0 s

T6

Re-transfer Delay

Confirmation delay to re-transfer on normal source

0, 1, 2, 3, 5, 10, 20, 30, 60 min

1 min

T7

Genset Start Delay

Delay to start Genset

U-U: 0s

U-G: 0, 1, 2, 3, 5, 10, 20, 30, 60 s

U-U: 0 s

U-G: 3 s

T8

Loadshed Delay

Delay to load shedding

N/A

0 s

T9

Genset cool delay

Genset cooling down delay

N/A

60 s

T10

Genset fail delay

Genset alarming failure detection time

N/A

300 s

T13

On load test delay

Time duration to run for test process on load.

N/A

0 s

T14

Off load test delay

Time duration to run for test process off load.

N/A

0 s

Applications

• Confirm connected source has failure.

• Measure the target source power (for example voltage and frequency) during the time delay.

• The delay shall detect both sources, the stop condition will be N recovered, or A source failed.

Default values

5 s

Range

0, 1, 2, 3, 5, 10, 20, 30, 60 s

Adjust

Fixed value

Applications

• Time delay applied to the center-off position O when Position I and Position II are transferring, it stops at Position O to protect inductive load.

• The delay is used for both process of transfer to N and A.

Default values

0 s

Range

0 or 5 s

Adjust

Fixed value

Applications

• Time delay applied when transferring from R to N in the Auto-Return mode. This delay is intended to measure the N and R during the delay.

• If N is abnormal, the timer will stop and the re-transfer is cancelled.

• If R is abnormal but Source N is normal, the switch will transfer immediately.

Default values

1 min

Range

0, 1, 2, 3, 5, 10, 20, 30, 60 min

Adjust

Fixed value

Applications

• Genset startup time delay (time delay before sent the signal to start Genset), available for U-G applications.

• The time delay only available when there is external power or select the Genset start module.

Default values

3 s

Range

0,1, 2, 3, 5, 10, 20, 30, 60 s

Adjust

Fixed value

Applications

• Load shedding delay, for U-U/U-G.

• Load shed: The alternatepower (Genset) sometimes may not afford all loads. A signal from controller will shed some loads.

• Need customer to decide which load can be shed.

Default values

0 s

Range

Not applicable

Adjust

Not applicable

Applications

• Delay between closing of N source and send the signal to stop the Genset.

• The propose is to keep the generator running at no load for some time before shutting / cooling down.

• When controller restarts, this time delay will be running also at U-G mode.

Default values

60 s

Range

60 s

Adjust

Not applicable

Applications

• After sending the Genset start signal, controller will wait a time duration T10 until Genset is ready.

• The ATSE shall rise the Genset alarm, if genset is not started while T10 timer is ended (if enabled).

• The ATSE shall reset the Genset alarm, when the R source is in Range or when the N source is in Range.

• The time delay is only available when there is external power.

Default values

• The default value is 300 s.

• The alarm can be enabled or disabled. Default as disabled.

Range

300 s

Adjust

Not applicable

Applications

Time duration for On load test process. It will rise the alarm if test is not finished in the time duration.

Default values

0 s

Range

0 s

Adjust

Not applicable

Applications

Time duration for off load test process. It will rise the Alarm if test is not finished in the time duration.

Default values

0 s

Range

0 s

Adjust

Not applicable