TURBINE GENERATOR STANDARD AND OPTIONAL EQUIPMENT



Standard Equipment
The manufacturer shall equip the turbine-generator unit with the following standard equipment:

1) Speed/Load-Control System.
A speed /load-control system capable of controlling and regulating the speed of the turbine in conformity with the performance characteristics hereinafter specified. The speed/load-control system should include means by which the steady-state speed regulation may be adjusted to values within the limits hereinafter specified.

Adjustment of the steady-state speed regulation, while the turbine is in operation, is not required by this recommended practice unless otherwise agreed upon between the manufacturer and the purchaser.

2) Speed/Load Reference Changer.
A speed/load changer by means of which the speed or power output of the turbine may be changed within the limits hereinafter specified while the turbine is in operation. The speed/load reference changer shall be equipped with means for manual adjustment and should be equipped to accept input(s) for remote control.

3) Valve Position Limiter (Load Limit).
For turbines rated over 10 MW, a valve position limiter manually adjustable to limit the degree of opening of the control valves to any value within the full range of valve travel while the turbine is in operation.

If this device is used for load-limiting purposes, the speed-control system will not necessarily control the overspeed of the turbine, if the speed/load reference changer is set at its high-speed stop.

4) Miscellaneous.
At the discretion of the manufacturer, any instruments, controls, or safety devices not specified as standard equipment in (1), (2), and (3) may be included.

Optional Equipment
The following devices or other optional devices may be specified by the purchaser:

1) Valve Position Limiter.
For turbines rated 10 MW or under, a valve position limiter.

2) Adjustment of Steady-State Regulation.
A means by which, in the speed/load-control system the steady-state speed regulation may be adjusted, within limits agreed to by the manufacturer and purchaser, while the turbine is operating at any power output.

3) Remote or Local Indication.
A means for remote or local indication, or both, of the positions of the control valves or any other element of the control system to be specified by the purchaser.

4) Remote Control of the Valve Position Limiter.
For turbines rated over 10 MW, a means for remote setting of the valve position limiter within the limits hereinafter specified.

5) Remote Control of Speed/Load Reference Changer.
For turbines rated over 10 MW, a means for remote control of the speed/load reference changer within the limits hereinafter specified.

6) Miscellaneous.
At the discretion of the manufacturer, any instruments, controls, or safety devices not previously specified as optional equipment may be included.

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