Vt fuse circuit
[DOCX File]ECP 11-0515d Schneider HV Metering Unit with …
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Check VT fuse F2 and F3 ratings are 6A and continuity () ... the resistance of the star connected VT to earth is 2 to 4 kΩ and 4 to 6 kΩ between phases. ... Check the metering circuit breaker is open Apply 240/110V ac from an injection test set to the primary (HV) winding, measure each of the secondary (LV) winding voltages and compare to the ...
[DOC File]Functional Specification for 15 kV, 25 kV, or 35 kV ...
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Bus VT fuse fail detection (i.e., loss of potential). The user may individually set any directional overcurrent elements to be blocked or made non-directional in the event of a fuse fail condition. Features common to all relays shall include: Incipient Cable Splice Fault (ICSF) Detector
[DOC File]B30 Guideform Specifications
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VT Fuse Fail Detection. Disturbance Detection. Control Functions: Two Breaker Failure Elements. The breaker fail elements shall be configurable to respond to two different currents such as in breaker-and-a-half application. The breaker fail elements shall respond to three levels of current in three-pole and single-pole modes as well as to ...
[DOC File]Appendix B (Rome 2000 IAS - PCIC Paper 63
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Refinery Location Substation Name Substation Number Circuit Designation Switchgear Make Switchgear Type Serial No. Year of Manufacture Date of Assessment Assessor KEY TO GUIDANCE TABLE / PROFORMANCE. Potential to Become Safety Integrity Issue ... Where the HV fuse is mounted in the VT bushing, is there evidence of internal electrical discharge ...
[DOCX File]PSG Section 16346 - Eaton
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Top-mounted voltage transformers shall be installed and contained in an enclosed top accessible auxiliary compartment to allow removal of the VT or fuse, if required. The SF6 gas tank shall contain a VT isolating switch to connect and ground (earth) top-mounted switchgear VTs from the primary circuit.
PART 1 GENERAL
VT Fuse Fail detection. Load Encroachment. Load encroachment characteristics responding to positive-sequence voltage and current shall be provided. ... Contact outputs shall be trip rated Form-A with current and voltage circuit monitors, Form-C, or Fast Form-C for …
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