22kV - 1250kVA Cast Resin Dry Type Transformer, Three Phases, Two
Winding, Power Distribution
Low loss, compact and light weight, low noise
level,clamp-proof,anti-fouling,high mechanical strength, flame
resisting, strong overload ability and low partial discharge
quality,they are application to power transmission and distribution
plants,stations,aiports,offshore drilling platforms,especially to
heavy load centers and places with special fire protection
- Low loss, low noise, low partial discharge, high reliability.
- Strong capability with anti-short circuit, high anti-lightning
- HV coil is vacuum casted with epoxy resin with pressure,
capabilities for better the cast without pressure.
- Simulating analysis being used in the core model, the resonance can
be avoided and the noise is reduced. Simulation calculation and
analysis of lighting impulse wave are applied to the HV Coils;
anti-lighting impulse capability is improved.
>BOLTS AND NUTS
Bolts and studs for electrical wiring connections shall preferably
be of brass M6 size.
Nuts and pins shall be locked in position with lock-nuts or lock
No bolt or stud shall project through its nut by more than 0.5
times diameter or four threads whichever is the less except for
terminals and relay stems.
Bolts, nuts and washers on outdoor equipment shall be of
non-corroding material, where they are in contact with non-ferrous
parts in conductor clamps and fittings and elsewhere if specially
Suitable special spanners shall be provided for bolts and nuts
which are not properly accessible by means of an ordinary spanner.
>CLEANING AND PAINTING
All coatings and protective which are required to withstand service
fluids such as pipe, tank, pump, valve, water box and similar
linings shall be applied in the works prior to shipping.
Washing of any surface prior to the application and/or over coating
of paint shall only be carried out with demineralised water or
suitable approved solvent solutions.
|I Basic Information || || |
|1||Rated Voltage ratio||kV||22kV / 0.433 kV|
|1.02||Applicable Standards|| ||IEC 60076|
|1.03||Manufacturer|| ||Pearl Electric|
|1.04||Country of Origin|| ||China|
|II Electric Performance || || |
|2.05||Number of phase|| ||Three|
|2.06||Insullation Class|| ||Class H|
|2.07||Temperature Rise (@40℃ ambient temperature)||K||125K|
|2.08||Cooling Method|| ||AN|
|2.09||Tapping Ranging|| ||±2*2.5%|
|2.1||Vector Group|| ||Dyn11|
|2.14||Load Loss (@120℃)||W||13870|
|2.15||Local Partial discharge||pC||<10PC|
|2.16||Impulse Withstand Voltage (HV/LV)||kV||75/0|
|2.17||Power Frequency Withstand Voltage|
|2.18||Rated Duration of Short Circuit||s||2|
2 Applied Standard
GB/T10228 , GB1094.11 , IEC60076-11 , DIN42523