AOC 15 user manual Emergency Stop Pushed, Emergency Stop Pulled Out, Test Operation, Power Up

9.0 Wind Turbine Operation 78

Emergency Stop Pushed In:

The emergency stop switch overrides all other switches. With the emergency stop pushed in, the wind turbine should come to a complete stop and de-energize immediately. All brakes deploy, the relays de-energize and the main contactor opens. In this mode, there is no power to the PLC output cards and the relays can not be energized. The wind turbine disconnects from the grid and remains so until the emergency stop is reset manually (pulled out).

Emergency Stop Pulled Out:

With the emergency stop switch pulled out, all the other switches can be operated.

9.3Test Operation

The following sections show the procedures used when testing the wind turbine functions after installation and/or after any maintenance has been performed.

Before placing the wind turbine into service for the first time and after any maintenance and/or repair work, the following tests must be carried out and the commissioning/checkout test sheet (see Appendix G) must be completed.

9.3.1Power Up

1.Set all control switches to OFF.

2.Open the three 15 Amp circuit breakers on the 120 V side of the control transformer (1CB, 2CB, 3CB).

3.Open the three-pole, 3 Amp breakers on the 480 V bus which reads the control transformer and the grid monitor (4CB, 5CB, 6CB).

4.Energize the 480 V bus from the utility network.

5.Close the three pole, 3 Amp breakers to energize the control transformer (4CB, 5CB, 6CB).

6.Check for 120 VAC output on the control transformer.

7.Close the three 15 Amp circuit breakers on 120 V side of the control transformer (1CB, 2CB, 3CB).

8.Observe the panel lights, which should run through a flash sequence after which the turbine ready light should light up and remain on.

9.3.2Parking Brake Release Test

1.Set the turbine test switch to TEST.

2.Set the parking brake release switch to ON.

3.Observe the rotor movement.

NOTICE: Use of the material contained in this document is subject to the warning on page Iv and the disclaimer on page v of this document.

DOC012R02 AOC 15/50 User Manual Nov 2001