{PDF} Areva KVGC 202 – Voltage Regulating Control Relay. Short technical description

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??????? ??????????? ????????.Areva. Electronic Edition, 2004. ? 8 pages.The KVGC relay provides regulation of the supply voltage within finite limits by controlling transformer tap changing.
The KVGC202 relay can be used to maintain a regulated voltage supply to electrical equipment designed to operate within finite limits of its designed rated voltage. Failure to maintain a regulated voltage supply within these defined limits may cause extensive damage. Regulation is achieved by the operation of voltage regulating transformers of various types, the most common being the on-load tap changing transformer which maintains a stable secondary voltage by selecting appropriate tappings on the primary winding.Table of Contents:Key Features.
Control Functions.
Transformer Tap Change Control.
Inter Tap Time Delay.
Line Drop Compensation.
Parallel Transformer Applications.
Load Shedding & Boosting.
Supervision & Monitoring Functions.
Runaway Protection.
Under/Over Voltage Detection & Blocking.
Overcurrent Detection.
Tap Position Indication.
Tap Changer Maintenance.
Tap Changer Failure Mechanism.
Configuration.
Password Protection.
Ancillary Functions.
Measurements.
Default Displays.
Records.
Test Features.
Hardware.
Front Panel User Interface.
Serial Communication.
Technical Data.
Input Ratings.
Output Rating.
Burdens.
Thermal Withstand.
Measurement Accuracy.
Current Transformer Requirements.
Opto-isolated (Digital) Inputs.
Relay Output Contacts.
Contact Durability.
Electrical Environment.
Product Safety.
Additional Information.
Cases.
Information Required with Order.