Product Manual A

4. Operation 11-2017

The Set Exercise button is used to:

• Set a delayed repeat exercise period when the pushbutton is pressed and held for five seconds.

• Start an immediate exercise period (that also repeats) if the pushbutton is pressed momentarily

within ten seconds of starting the delayed exercise period.

• Cancel a repeatable exercise period if the pushbutton is pressed and held for five seconds.

4.3 System Testing

4.3.1 Test With or Without Load

This Feature allows a transfer switch operator to test the transfer switch and generator power system.

The test is configurable to be with load or without load.

• A test with load initiates a load transfer.

• A test without load starts the generator and runs it without load.

1. Set the control setting to test with or without load, as desired.

2. To start a test, press and hold the Test pushbutton for two seconds or ground the Remote Test input.

3. To end the test, momentarily press the Test pushbutton or remove the ground from the Remote Test

input.

NOTICE

When ending a test with load, you can bypass the retransfer time delay (TDEN) and cause

the immediate load retransfer by pressing the Override button. The generator stops after the

engine cool-down time delay (TDEC).

4.3.2 Test With Load - Sequence of Events

The following describes the sequence of events of a transfer switch during a test with load.

In this example, TDPT is set to zero, the phase check sensor is disabled, the Transfer Inhibit and

Retransfer Inhibit inputs are inactive and TDEL is set to zero.

The utility must be acceptable during the entire test event. Acceptability is determined by the active source

sensor (under-voltage sensor). If, at any time, the under-voltage sensor determines that the utility is not

acceptable, the test is terminated.

Before a test can begin, the transfer switch must be connected to the utility power source and utility power

must be available.

1. Verify that the transfer switch is set to test with load.

2. Verify that the green Utility Power Connected LED on the control panel is lit.

3. Verify that the green Utility Power Available LED on the control panel is lit.

4. Press and hold the control panel Test pushbutton for two seconds or ground the Remote Test input

to initiate the test. The Test LED flashes two times per second for two seconds, acknowledging that

the test was activated. Once the test period starts, the Test LED stays on continuously.

5. The control simulates a utility power failure but the Utility Power Available LED remains lit as long as

the utility is still available.

6. The control starts the TDES timer. After the timer expires, the control de-energizes the start relay,

closing the start contact to signal the generator to start.