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Hi, I am Businessman I found this sample from https://www.indotrade.co and think it might be useful to you. ------------------------------------------------------- KVGC 202 Voltage Regulating Control Relay Application The KVGC 202 relay can be used to maintain a regulated voltage supply to electrically powered equipment within finite limits of a designed rated voltage. Failure to maintain a regulated voltage supply within these limits may cause extensive damage. This 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 secondary windings. The tap changer operation is controlled automatically by the voltage regulating relay, which continuously monitors the system voltage and initiates the tap changer mechanism to raise or lower the voltage to be within set limits of a desired value. Typical application diagrams are shown in Figures 5, 6, 7 and 8. 2 Type KVGC 202 Voltage Regulating Control Relay Figure 1: Relay type KVGC 202 Control Functions Transformer tap change control The regulated voltage, Vs, and the deadband, dVs, settings are user selectable. When the regulated voltage moves outside the deadband setting, the relay actuates the tap changer mechanism to raise or lower the voltage to be within the set deadband limits. The relay has an initial time delay before initiating the first tap change to minimise unnecessary changes due to transient voltage fluctuations this initial time delay is selectable for either definite or a time delay which is inversely proportional to the degree of voltage variations from the Vs setting. Subsequent tap changes are initiated after an inter-tap delay. For detailed information, please go to http://www.indotrade.co/pteanco/1790912
0.0077 194.163.150.105