Grid-Sync Split Transformer Short-Circuit Current Challenges Redefining Power Distribution Efficiency Transformer

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
• Phase: Three
• Model NO.: Customized
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC, ISO14001, ISO45001, CQC, CE, UL, Kema
• Usage: Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Qinghao or Customized
• Production Description: Cast Resin/Dry Type Power Distribution Transformer
• Kv kVA Mva Power Transformer Price: Indoor Epoxy Dry-Type Distribution Transformer
• Standard: IEC60076 / GB1094/ANSI/IEEE/as/Tnb/DIN(Customized)
• Connections Vector Groups: Wye-Delta, Dyn1/Dyn11/Yyn0/Ynd1/Ynd11
• Rated Voltage: 10/20/33/0.4kv, 33/10kv
• Frequency: 50/60Hz
• Warranty: 24 Months
• Insulating Medium: Epoxy Resin Cast
• Insulation Class/Cooling Way: H/F Class, Anaf, Onan, Onaf, Knan, an, Ofaf, Odaf
• Tapping Range: +/-2 X 2.5%(Customized), Nltc/Oltc
• Winding Coil Material: Copper / Aluminium
• Core Material: Silicon Steel / CRGO
• Customized Transformer: China Manufacturer Factory Supplier Vendor
• Hot Selling Transformer: Pad Mounted, Pole Mounted, Voltage Step up Down
• Top 10 Popular Products: Dry, Oil Type Transformer, Substation, Switchgear
• Transport Package: Wooden Case or Pallet (Customized)
• Specification: 11kv, 22kv, 35kv, SCB 50kva-3150kva
• Trademark: Qinghaobiandian
• Origin: China
• HS Code: 8504349000
• Production Capacity: 8000PCS/Year

Product Description

Product Description

Solar Storage Split Winding Dry Type Transformer Cost-Effective Grid Protection Double Reliability Power Transformer

Qinghao dry type distribution transformer includes cast resin insulation, amorphous alloy and on-load tap changer type, which provides general security for environment with its non-flammable, self-extinguished, toxic gas-free structure and low noise level.

Split-winding transformer is a newly type transformer with a multi-winding power transformer consisting of one high-voltage winding and two or more low-voltage windings with the same voltage and capacity in each phase. The normal power transmission of the split transformer is only carried out between the high-voltage and low-voltage windings, and it has the function of limiting the short-circuit current in the event of a fault. Mainly used in fields such as photovoltaic power generation system, energy storage system, and industrial power distribution.

Flame retardant, low temperature rise, maintenance free, long-term full load operation and eco-friendly.

Main Characteristics:
1. Dual Impedance Protection Architecture.
2. Redundant Power Delivery.
3. Modular Scalability: Split Winding Quantity: 2/3/4 configurable per phase (custom designs available)
4. Enhanced System Reliability:
   1) MTBF (Mean Time Between Failures): >30,000 hours (double conventional transformers)
   2) Fault Recovery: Auto-load transfer within 8 seconds (IEC 61850 compatibility)
5. Energy Efficiency Leadership:
1) Full-Load Efficiency: ≥98.5% (ISO 9001/14001 certified manufacturing)
2) Loss Reduction:
   Core losses: 60-80% lower (non-crystalline alloy option)
   Copper losses: Optimized by 35% via split winding design
6. Compact Industrial Design:
  1) Space Saving: 40% smaller footprint vs. conventional solutions (typical 10MW PV plant)
  2) Weight Reduction: 25-30% lighter core materials (advanced laminations)

Advantages:
1. Safe flame retardant, fireproof, explosion-proof, pollution-free, can be directly installed in the load center.
2. Low loss, maintenance-free, low comprehensive operating cost, obvious energy-saving effect.
3. Good moisture-proof performance, low noise, strong heat dissipation ability.
4. Strong load capacity, low product temperature rise, strong heat dissipation capacity, 140% load when forced air cooling to meet temporary emergency needs.
5. Foil coils are insulated with DMD prepreg cloth to improve short-circuit resistance and service life.
6. Limit short-circuit current: When a low-voltage branch short-circuits, the current must flow through the high-impedance path, thereby significantly reducing the short-circuit current amplitude and protecting the system equipment.
7. Improve system reliability: When a low-voltage winding fails, the voltage fluctuation of the other branch is minimal, which can maintain normal power supply and improve system reliability.
8. Cost-effectiveness: The two low-voltage branches can be connected to different loads or inverters respectively, supporting independent operation or parallel expansion to meet the needs of multiple scenarios.

Applications
Mainly used for Solar Farms, Energy Storage, Industrial Grids.

Why Split-Winding?

• For Engineers: Eliminates costly harmonic filters in renewable systems
• For Plant Managers: Reduces unplanned downtime by 90% (case studies)
• For Project Owners: Achieves 15-20% LCOE reduction in solar/storage projects

Service environment:
1. Ambient temperature: Maximum +45ºC, Minimum -30ºC
2. Altitude: less than 1000 meters.
3. Max. air relative humidity 100% (±25ºC).
4. Max. Ground ramp degree 3°.
5. The earthquake: the horizontal acceleration≤0.3m/s² ,the vertical acceleration≤0.15m/s².
6. The installation site shall be free from explosion danger, fire, filthy material, chemical corrosion and violent vibration.
(Note: If the application environment is different from the above standard conditions, please contact for customized designs.)

Please check below quick links for other product types. 

 

Product Parameters

The rated voltage 11kv 22kv 33kv can be customized as customers' requirements. For instant communication, please click .  
 

10KV Series Amorphous Alloy Dry Type Distribution Transformer Performance Parameters
High Voltage:10(6,6.3,10.5,11)KV                               Connection Symbol:D,yn11 or Y,yn0                           Rated Frequency:50Hz/60Hz               Low Voltage:0.4(0.415,0.433)KV                                   Tapping Range of HV:±2x2.5%                                 Insulation Level:LI75 AC35/AC3
Rated power (KVA)	Short-Circuit Impedance(%)	SC(B)H19 (W)		SC(B)H17 (W)		SC(B)H 15(W)		No-Load Current (%)	Sound pressure dB(A)	Weight (kg)	Inner Dimension(mm)			Overall Dimension(mm)
		No-Load Loss	On-Load Loss120ºC	No-Load Loss	On-Load Loss120ºC	No-Load Loss	On-Load Loss120ºC				L	W	H	L	W	H
30	4	50	640	60	640	70	710	0.6	60	640	1200	1000	750	1700	1350	2200
50		60	900	75	900	90	1000	0.5	60	720	1200	1000	790	1700	1350	2200
80		85	1240	100	1240	120	1380	0.5	62	840	1300	1100	830	1700	1350	2200
100		90	1415	110	1415	130	1570	0.5	62	920	1300	1100	860	1700	1350	2200
125		105	1665	130	1665	150	1850	0.4	63	1050	1350	1100	900	1700	1350	2200
160		120	1915	145	1915	170	2130	0.4	63	1180	1350	1110	900	1700	1350	2200
200		140	2275	170	2275	200	2530	0.4	64	1480	1380	1100	980	1700	1350	2200
250		160	2485	195	2485	230	2760	0.4	64	1510	1410	1100	1000	1800	1350	2200
315		195	3125	235	3125	280	3470	0.3	66	1790	1540	1100	1030	1900	1400	2200
400		215	3590	265	3590	310	3990	0.3	66	2150	1600	1100	1100	2100	1500	2200
500		250	4390	305	4390	360	4880	0.3	67	2390	1650	1100	1230	2100	1500	2200
630		295	5290	360	5290	420	5880	0.3	68	2650	1620	1200	1230	2100	1500	2200
630	6	290	5365	350	5365	410	5960	0.3	68	2600	1620	1200	1230	2100	1500	2200
800		335	6265	410	6265	480	6960	0.3	69	3230	1780	1200	1290	2100	1500	2200
1000		385	7315	470	7315	550	8130	0.2	69	3740	1870	1200	1430	2300	1500	2200
1250		455	8720	550	8720	650	9690	0.2	71	4530	2000	1200	1480	2500	1500	2200
1600		530	10555	645	10555	760	11730	0.2	72	5360	2130	1200	1610	2500	1500	2200
2000		700	13005	850	13005	1000	14450	0.2	74	6250	2170	1300	1940	2600	1600	2200
2500		840	15445	1020	15445	1200	17170	0.2	75	7320	2280	1300	2100	2600	1600	2200
Note: The above parameters are only for designing and selecting  reference, and the final parameters are subject to the actual product.

 

Detailed Photos

Main Components:

1. Core: Typically made of laminated steel sheets in E-I shape or a stacked CORE formation.
2. Windings: Primary Winding and Secondary Winding.
3. Insulation: To prevent electrical conductivity between windings and the core, and turns of the windings.
4. Enclosure: Have a ventilated enclosure made of steel or composite material to protect dust, moisture, and corrosion. 
5. Bushing: Maintain electrical isolation
6. Temperature Monitoring Devices: Include temperature sensors or thermal switches to monitor temperatures.
7. Ventilation System: Some with a forced-air cooling system with fans to enhance heat dissipation. 
8. Protection Devices: Fuses, circuit breakers, or surge arresters can be installed to protect the transformer against overcurrent, short circuits, or voltage surges.

Packaging & Shipping

 

Company Profile

Qinghao Transformer is a reliable and specialized power transmission and distribution equipment manufacturer for over 20 years with a registered capital of USD8,000,000.

Except for ISO9001, ISO14001, ISO45001 certificates, we are also TUV audited suppliers with AAA enterprise and AAA products honors.  All products comply with GB and IEC related standards, which mainly include oil immersed distribution transformer, dry-type transformer, amorphous alloy transformers, combined transformer substations, circuit breaker, cable branch box, high low voltage switchgear cabinet distribution equipment. 

With the concept of "World-class transformers, smart solutions", Qinghao Transformer is devoting to provide high-quality power for customers.

Let us cooperate with a brighter future!

 

FAQ

Q: Are you a Manufacturer or Trading company?   
A: We are the original factory with approved export license.

Q: What's your warranty terms?
A: We offer 24 months warranty time. 

Q: How long is the production time?
A: 25 to 45 days or depending on order requirements.

Q: What should provide to make custom transformer?
A: Technical drawing and specification documents are the best, or you can list key parameters for designing.

Q: How can I trust you?
A: We are TUV aduited supplier with many patent certificates, type test reports, CQC, CE, KEMA, ISO certificates. We can provide on site services for many areas like South America, Indonesia, etc.

 

Certificates

 

Business Partners