20 kV - 125 kVA Dry Type Transformer Low Noise / Low Partial Discharge

Basic Information
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
Price: USD/RMB
Packaging Details: Seaworthy wooden packing
Delivery Time: 30days-50days ex-work
Payment Terms: T/T, L/C
Supply Ability: 9000 units per year
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Core: Silicon Steel Sheet Cooling: AN Or Customized
Capacity: 125KVA Or Customized Rated H. V.: 20Kv Or Customized
Rated L. V.: 0.433kv Or Customized Impedance: 4% Or Customized
High Light:

air cooled transformer dry type


dry cast resin transformers

 20 kV - 125kVA Cast Resin Dry Type Transformer , Three Phases , Two Winding , Power Distribution​

Product characteristic:
1. It can be directly installed at the load center, which is free of maintenance and install conveniently, therefore it has low comprehensive running cost.
2. With high moisture resistance, it runs normally at the moisture and can be put into operation without being dried after outage, with low loss and local discharge capacity.
3. It has small noise, strong short circuit resistance and excellent environmental performance, and can run under severe environmental condition.
4. It is safe, fire-retardant, fireproof and environment-friendly.
Company situation
The hoisting, tooling and testing equipment is complete. Pearl Electric has passed the ISO9001-2015 international standard quality management system certification. Adopting advanced technology and high quality raw material, with first class equipment and strict processing, SC-series resin casting dry type transformer. All performance indicators of the products have reached the relevant national standards and international standards.
Pearl Electric's products are universally used in different industries, involving power plants, chemicals, construction, mining, metallurgy, rail transportation and so on. We do utmost to meet the needs of various users.
Cast Resin Dry Type Transformer, Low Noise, Low Loss and Low Partial Discharge.

I Basic Information     
1Rated Voltage ratiokV20kV / 0.433 kV
1.01Rated CapacitykVA125
1.02Applicable Standards IEC 60076
1.03Manufacturer Pearl Electric
1.04Country of Origin China
II Electric Performance     
2.06Insullation Class Class H
2.07Temperature Rise (@40℃ ambient temperature)K125K
2.08Cooling Method AN
2.09Tapping Ranging ±2*2.5%
2.1Vector Group Dyn11
2.11Noise leveldB48
2.13No-load lossW530
2.14Load Loss (@120℃)W1960
2.15Local Partial dischargepC<10PC
2.16Impulse Withstand Voltage (HV/LV)kV75/0
2.17Power Frequency Withstand Voltage
2.18Rated Duration of Short Circuits2
III Materials & Accessories     
3.01Core Materials Silicon Steel Sheet
3.02Winding Materials Copper conductor/foil
3.03Insulation methods HV vacuum cast / LV impregnant
3.04Main Insulation Materials Epoxy Resin
3.05Tap-changerpcsOff-load tap-changer
3.06Sensor for Temperature Alarm and TrippcsYes, contact provided
3.07Protective EnclosurepcsIP00

1 Current and temperature limitations
With loading values beyond the nameplate rating, the hot-spot winding temperature shown in
Table 3 shall not be exceeded and the specific limitations given in 4.3 and 5.12 shall be taken
into account.
The current magnitude is limited to 1,5 Ir especially when the cycle is short and repeated to
avoid mechanical damage in the winding. Values over 1,5 Ir shall be specified at the enquiry
stage and shall be agreed upon between purchaser and manufacturer. For all other types of
cycles the current is limited to 1,5 Ir .
Table 3 – Current and temperature limits applicable to loading
beyond nameplate rating
Insulation system temperature (°C) 105 (A) 120 (E) 130 (B) 155 (F) 180 (H)200 
Maximum current (p.u.) 1,5 1,5 1,5 1,5 1,5 1,5 1,5
Highest temperature for hot-spot (°C) 130 145 155 180 205 225 245
NOTE 1 The temperature and current limits are not intended to be valid simultaneously. The current may be limited to a lower value than shown in order to meet the temperature limitation requirement. Conversely, the temperature may be limited to a lower value than shown in order to meet the current limitation requirement.
NOTE 2 The calculation shows that at the highest hot-spot temperature shown in the table the lifetime of a
new transformer is only few thousand hours.
2 Other limitations
2.1 Magnetic leakage field in structural metallic parts
The magnetic leakage field increases with increasing current. This field may cause excessive
temperatures in structural metallic parts that may restrict the overloading. The limits on load
current, hot-spot temperature and temperature of structural metallic parts other than windings
and leads stated in Table 2 should not be exceeded. It should be noted that when the hot-spot
temperature exceeds the highest temperature in Table 2 according to the insulation classes of
the transformer, the characteristics of the insulation system decrease to a level below the
minimum value for the dielectric withstand of the transformer.
 Applied Standard
GB/T10228 , GB1094.11 , IEC60076-11 , DIN42523
20 kV - 125 kVA Dry Type Transformer Low Noise / Low Partial Discharge 

Contact Details

Phone Number : 86-020-22626603

WhatsApp : +008618826241798