3Phase Distribution Transformer

EVERPOWER Three-phase transformers are in accordance with IEC 60076 standard, or National Standard GB1094 “Power Transformer”. Special care is taken in the choice of high quality material, manufacturing technology and construction, so that the performance characteristics can match with those of the highest standard of the international market. Low loss and high efficiency means substantial saving in energy and low operating cost. Therefore they are widely used in places where requirement on voltage quality is emphasized.

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Three-Phase Distribution Transformer

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Technical Specification Standards And Certificates Advantages And Applications

GENERAL TECHNICAL INFORMATION
• Power Range kVA: 3. 5, 10, 15, 25, 37, 50, 75, 100, 167, 250, 333, 500
• Temperature Rise: 55°C or 65°C
• Cooling type : ONAN, OA,
• Frequency: 50Hz or 60Hz
• Polarity : Additive or Subtractive
• Primary Voltage : 2400V through 34500 GrdY / 19920V
• Secondary Voltage : 120 / 240V, 240 / 480 V, 277V, 600V
• Insulation Class : 2.4Kv~34.5kV (150kV BIL) and below
• Taps: none, or as an option, 4 x 2,5% HV
• HV Bushings: cover and sidewall mounted available

STANDARD FEATURES
−−Core and coils designed for an optimum Total Ownership Cost (TOC)
−−Wound core with step-lap joints for increased efficiency and lower noise levels
−−“Low-high-low” windings for increased short circuit strength, efficiency and thermal strength
−−“Low-high-low” windings for increased short circuit strength, efficiency and thermal strength
−−Computer aided design for mechanical & electrical calculations (C.A.D.)
−−Paint system meeting or exceeding the performance of the IEEE C57.12.28 Standard
−−Lifting lugs meeting all of the requirements of the CSA C2.1-06 and CSA C2.2-06 Standard
−−Multiple cover clamps to ensure proper sealing and to mini-mize water retention on the cover edge
−−Cover or sidewall mounted high voltage bushing(s) as required
−−Low voltage spade or clamp type (basket) terminals as required
−−Provision for surge arrester bracket, bracket available as an option
−−Automatic self-resealing pressure relief valve

OPTIONAL PRODUCT ACCESSORIES
• Cold-Rolled Grain Oriented Silicon Steel Core (CRGO) or Amorphous Metal Core (AMDT)
• Stainless Steel Tanks and Cover
• Extra Creep Bushing
• Surge Arrester Bracket
• The CSP protection package consists of four related components: H.V Fuse Link, Secondary Breaker, Signal light, External Surge Arrester that work • together to provide complete self-contained protection against surge currents, short circuits and overloads.
• Units can be customized to specific requirements

KVA	Voltage Combination			Vector Group	LOSS(KW)		FULL-LOAD LOSS	IMP. VOL%	DIMENSION(mm)
KVA	H.V.(KV)	TAPS	LV(KV)	Vector Group	NO-LOAD LOSS	FULL-LOAD LOSS	FULL-LOAD LOSS	IMP. VOL%	DIMENSION(mm)
500	6 6.3 10 10.5 11 13.5	+2×2.5% or +3×2.5% or +5%	0.4 0.415	Y,yn0 D,yn11	0.13	0.87	1.9	4 4.5	7907201120
100					0.2	1.5	1.5		10007501120
200					0.34	2.6	1.25		10307701120
250					0.392	3.05	1.15		11507801180
315					0.469	3.65	1.05		13208201250
400					0.56	4.3	0.95		13808301390
500					0.67	5.15	0.95		14008301390
630					0.84	6.2	0.85		15709201350
800					0.938	7.5	0.75		16409601440
1000					1.072	10.3	0.65		180010801670
1250					1.26	12	0.6		183010801670
1600					1.624	14.5	0.6		1198010801670

Standards:
GB1094
IEC76
ANSI C57.12
Or specific customer standards

Certificates:
ISO 9001
ISO 14001

Features and Application

1.Compliance to international standards like ANSI, IEEE, etc.
2.Robust QUALITY POLICYs ensure implementation of the best design and manufacturing practices.
3.Flexibility in designing transformers to exacting customer requirements (Optimum cost).
4.Best insulation and sealing systems
5.A wide range of features and accessories is available to satisfy almost any special requirement, including fuses, surge arresters, controls, pressure relief devices, and high voltage tap switches, and etc.

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Factory Workshop

Listed below are answers to our most commonly asked questions. Don't see your question?Contact our customer service team. We would be glad to assist you.

FAQ

Listed below are answers to our most commonly asked questions. Don't see your question?Contact our customer service team. We would be glad to assist you.

Can a transformer be used outdoors?

Yes, many transformers are designed for outdoor use, but they require waterproofing, dustproofing, and protective enclosures to withstand rain, dust, and temperature changes.

Is transformer noise normal?

A slight humming sound during operation is normal, caused by magnetization of the core and windings. However, if the noise is unusually loud or irregular, inspection is required.

What causes a transformer to overheat?

Common causes of transformer overheating include overloading, inadequate cooling, winding short circuits, or insulation aging. Prolonged overheating can shorten lifespan or cause failure.

How often should a transformer be maintained?

It is generally recommended to have a full inspection once a year, including insulation, cables, cooling systems, and oil quality tests to ensure safety and efficiency.

Can a transformer run continuously?

Yes, transformers are designed for long-term stable operation. As long as they run within rated voltage, load, and temperature limits, they can operate safely and continuously.

What is the main function of a transformer?

The main function of a transformer is to change voltage levels. It can step up voltage for long-distance transmission or step down voltage for safe use in equipment and households.

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