Jaotustransformatori arvutused – MS Excel tööleht

Väli: Elektrilised standardid

China

Neli kiiret transformatoriga seotud arvutust

Jaotustransformatoriga seotud arvutuste tabelaaruanne võimaldab kiiresti arvutada järgmist: MV/LV transformatori mõõtme määramist, üleliikumiskaitse seadme mõõtme arvutamist transformatori madalpinge pool, eeldatava lühikeste kõrvaldamise arvutamist ja loodusliku ventilatsiooni auke suuruse arvutamist transformatorkambris.

MV/LV transformatori mõõtme määramine

Sisendparameetrid:

Põhiline määratud pingeline (kV)
Teine määratud pingeline (kV)
Maksimaalne nõutav laadimine (kW)
Parandatud jõudfaktor
Transformeri tüüp
Lubatud laadimise protsent (%)
Lähim standardne transformeri mõõtmine (kVA)

Üleliikumiskaitse seadme mõõtme arvutamine transformatori madalpinge pool

Eeldatava lühikeste kõrvaldamise arvutamine transformatori madalpinge pool

Loodusliku ventilatsiooni auke suuruse arvutamine transformatorkambris.

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Teemad:

Kujundus ja simulatsioon

Jagamisvahendaja

Ekspertide kohta

Dyson

China

Eraldusvaldkond

Electrical Standards

Professionaalne artikkel

102

Soovitatud

Rohkem

Distribution Equipment Transformer Testing, Inspection, and Maintenance

1.Transformer Maintenance and Inspection Open the low-voltage (LV) circuit breaker of the transformer under maintenance, remove the control power fuse, and hang a “Do Not Close” warning sign on the switch handle. Open the high-voltage (HV) circuit breaker of the transformer under maintenance, close the grounding switch, fully discharge the transformer, lock the HV switchgear, and hang a “Do Not Close” warning sign on the switch handle. For dry-type transformer maintenance: first clean the porcel

Oliver Watts

12/25/2025

How to Test Insulation Resistance of Distribution Transformers

In practical work, insulation resistance of distribution transformers is generally measured twice: the insulation resistance between thehigh-voltage (HV) windingand thelow-voltage (LV) winding plus the transformer tank, and the insulation resistance between theLV windingand theHV winding plus the transformer tank.If both measurements yield acceptable values, it indicates that the insulation among the HV winding, LV winding, and transformer tank is qualified. If either measurement fails, pairwise

Oliver Watts

12/25/2025

Design Principles for Pole-Mounted Distribution Transformers

Design Principles for Pole-Mounted Distribution Transformers(1) Location and Layout PrinciplesPole-mounted transformer platforms should be located near the load center or close to critical loads, following the principle of “small capacity, multiple locations” to facilitate equipment replacement and maintenance. For residential power supply, three-phase transformers may be installed nearby based on current demand and future growth projections.(2) Capacity Selection for Three-Phase Pole-Mounted Tr

Dyson

12/25/2025

Risk Identification and Control Measures for Distribution Transformer Replacement Work

1.Electric Shock Risk Prevention and ControlAccording to typical design standards for distribution network upgrades, the distance between the transformer’s drop-out fuse and the high-voltage terminal is 1.5 meters. If a crane is used for replacement, it is often impossible to maintain the required minimum safety clearance of 2 meters between the crane boom, lifting gear, slings, wire ropes, and the 10 kV live parts, posing a severe risk of electric shock.Control Measures:Measure 1:De-energize th

James

12/25/2025