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Saturday, 2 July 2016
Monday, 27 June 2016
Introduction of Grid Station Main and Auxiliary Equipment
7-1 TRANSFORMERS
Electrical transformer is a static device which transforms electrical energy from one circuit to another without any direct electrical connection and with the help of mutual induction between to windings. It transforms power from one circuit to another without changing its frequency but may be in different voltage level.
7-1-1 USE OF POWER TRANSFORMER
Generation of Electrical Power in low voltage level is very much cost effective. Hence Electrical Power is generated in low voltage level. Theoretically, this...
Thursday, 14 January 2016
7 guide lines to correctly select circuit breaker
7 guide lines to correctly select circuit breaker
Selection of rated circuit breaker //
The general procedure for the selection of correctly rated circuit breaker follows the following scheme of seven major questions you should answer:
1. What is the task of the branch circuit or feeder?
Will it be used for the protection of connecting leads, protection of installation, group-protection or motor protection? Select the appropriate circuit breaker type, with or without the thermal overload protection. Decide which...
Capacitive Voltage Transformers for HV Measurements
Capacitive Voltage Transformers (CVT) For HV Measurements
66 kV and upwards //
Capacitive voltage transformers (CVTs) are used on higher voltage levels, starting from 66 kV and upwards. The type of the CVT is always a single-pole one, thus the connection is between phase and earth. The higher the voltage level is, the more price-competitive the capacitive type becomes.
One of the advantages the capacitive type has, in...
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