Arcteq Generator Commander, Instruction Manual

Page: 420 / 561

6 Generator commander application
6.1 General
The Generator commander consists of two hardware equipments: the AQ-G257 IED and the AQ-
GC30 IGBT rectifier bridge.
The AQ-G257 IED can be equipped with several I/O units, from current and voltage measurement to
analog and digital I/Os as well as RTDs. The I/O can be adjusted according to the requirements of the
project at hand and it can be used in forming numerous excitation and control applications. Additional
functions, such as various synchronous motor starting arrangements and generator standby heating,
can be easily programmed with the IED’s logic editor. The IED can be used for both rotating and static
exciters.
The AQ-GC30 IGBT rectifier bridge is used mainly with rotating exciters. AQ-GC30 is rated 30 A DC
and its functions are integrated in an easy and user-friendly configuration within the IED. The two units
communicate with an optical high-speed bus. The optical bus and the thermal design of the IGBT
rectifier bridge make it suitable for installation in the generator's terminal box.
AQ-GC30 can also be used a stand-alone addition with a hard-wired communication to any voltage
regulator with a suitable interface, regardless of brand or make.
The rated data of the IGBT rectifier bridge module AQ-GC30 is as follows:
• 30 ADC (continuous)
• 60 ADC (for 10 seconds)
• Supply voltage 0…400 VDC (10…500 Hz)
• Ambient temperature 0…50 degrees °C (derating at 25 ºC, with 0.5 A/°C).
The I/O interface of AQ-GC30 consists of the following:
• 8 digital inputs, galvanically isolated in one group, 18…260 VDC
• 4 digital outputs, potential free relay contacts in two groups
• 1 analog input, 0…20 mA
• 1 analog input, 0…10 V
• op
optional tional:: 6 RTDs (PT100)
Genera Generattor Commander or Commander
Instruction manual
Version: 2.07
418 © Arcteq Relays Ltd
IM00001