|Place of Origin:||China|
|Brand Name:||Pearl Electric|
|Certification:||KEMA, CE, CCC, ISO9001|
|Model Number:||PEC-S, SC(B) 9-15|
|Minimum Order Quantity:||1 unit|
|Packaging Details:||Seaworthy wooden packing|
|Delivery Time:||30days-50days ex-work|
|Payment Terms:||T/T, L/C|
|Supply Ability:||9000 units per year|
|Core:||Silicon Steel Sheet||Cooling:||AN Or Customized|
|Capacity:||160KVA Or Customized||Rated H. V.:||20Kv Or Customized|
|Rated L. V.:||0.433kv Or Customized||Impedance:||4% Or Customized|
air cooled transformer dry type,
dry type power transformer
20kV - 160kVA Cast Resin Dry Type Transformer , Three Phases , Two Winding , Power Distribution
The product has the following advantages:
1. High mechanical strength and strong short circuit resistance ability;
2. Effect of moisture proof and dust-proof, and enhancing level and additional value of products.
3. Advanced structure, small dimension, light weight and low partial discharge;
4. High insulation level and equal electric field distribution;
5. Easy maintainability;
6. Strong heat dissipation, run with rated load under forced air cooling;
7. Fireproof, explosion-proof, pollution-free and low-noise and able to be directly installed in the load
Made by amorphous material or high permeability silicon steel, it conforms to low no-load loss and energy-saving standard requirements so that it meets the needs of low current density as well as low load loss.
The product can be universally used in places with high fireproofing requirements, such as power transmission and transformation system, high building, commercial center, sport stadium, petrochemical enterprise, metro, station and airport. The epoxy resin cast dry type power transformer has the richest manufacturing experience and the best running performance.
Packaging & Shipping
1, Wrapped with plastic film.
2, Fixed in a wooden case.
3, Wooden case on a pallet.
4, Delivery Details : 10-30 days according to order quantities
Cast Resin Dry Type Transformer, Low Noise, Low Loss and Low Partial Discharge.
|I Basic Information|
|1||Rated Voltage ratio||kV||20kV / 0.433 kV|
|1.02||Applicable Standards||IEC 60076|
|1.04||Country of Origin||China|
|II Electric Performance|
|2.06||Insullation Class||Class H|
|2.07||Temperature Rise (@40℃ ambient temperature)||K||125K|
|2.14||Load Loss (@120℃)||W||2250|
|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|
|III Materials & Accessories|
|3.01||Core Materials||Silicon Steel Sheet|
|3.02||Winding Materials||Copper conductor/foil|
|3.03||Insulation methods||HV vacuum cast / LV impregnant|
|3.04||Main Insulation Materials||Epoxy Resin|
|3.06||Sensor for Temperature Alarm and Trip||pcs||Yes, contact provided|
Thermal endurance graph
When corresponding values of ln h and 1/T are plotted in a Cartesian diagram, the points will
be situated on a straight line. Such a graph is called a thermal endurance graph. An example
is shown in Figure A.2.
The experiments are made at higher temperatures than the expected temperature of the
temperature index (TI). In the example in Figure A.2 the experiments are made at four
different temperatures, 170 ºC, 160 ºC, 150 ºC and 140 ºC.
In the experiments an end-point of the material property under investigation (for example the
a.c. breakdown voltage) must be defined. The end-point may be defined as a minimum
absolute value (e.g. in kV/mm) or a percentual remaining value of the property before the
experiment started. Such end-points are suggested in IEC standards for some materials and
properties but not for all. IEC 60216-2 contains some suggestions for a number of material
properties. In other cases the definition of end-points may be subject to agreement between
supplier and purchaser of the material.
An end-point defined as for example 50 % remaining value could be perceived as ‘end of life’
for the insulation. However, this should not be taken too literally. Definition of end-points in
IEC is mainly conventional and is not functional. The deterioration of the material happens
gradually. The end-point represents no sharp limit between ‘life’ and ‘death’ of the
transformer. Reaching the end-point means only that the particular material property has been
reduced to a certain percentage of its original value, and that the safety margins and
consequently the service reliability of the transformer have been reduced in relation to a new
transformer. With respect to for example dielectric properties, the transformer may still
perform well for many years if no serious over voltages occur.
GB/T10228 , GB1094.11 , IEC60076-11 , DIN42523