Metal Clad Switchgear
A piece of switchgear may be a simple open-air isolator switch or it may be insulated by some other substance. The combination of equipment within the switchgear enclosure allows them to interrupt fault currents of thousands of amps. Several different classifications of switchgear can be made from the below selection guiding table:
Voltage Transformers
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Category |
Description |
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Type: Transformer type: Climatic Conditions: Nominal Power: Vector Group: No-Load Current: Windings Temp. Rise: Oil Temperature Rise: Sound Pressure Level: Cooling System: Ambient Temp.: Number of Phases: Frequency: Tappings: Impedance Voltage: Windings Material: Thermal Insul. Class: Accessories: |
TES-OM Conservator Normal 500 – 20000 kVA Dd0, Dyn 11 0.45 – 1.0% 65°C 60°C 68dBA Max . ONAN, ONAF 40°C 1 or 2 or 3 50Hz ± 2 x 2.5% 6.5 – 10.00% Cu / Cu or Al/Al A/A Upon Clients request |
Current Transformers
When current in a circuit is too high to directly apply to measuring instruments, a current transformer produces a reduced current accurately proportional to the current in the circuit, which can be conveniently connected to measuring and recording instruments. A current transformer also isolates the measuring instruments from what may be very high voltage in the monitored circuit. Current transformers are commonly used in metering and protective relays in the electrical power industry and can be presented to clients upon circuit specifications and/or client needs.
