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200 KVA 11kV 6.6kV 0.4kV Dual Voltage Distribution Transformer

Rated Power：200kVA
Rated Voltage：11/6.6-0.4kV
Rated current：10.5/17.5/288.68A
Rated Frequency：50Hz
Connection Symbol：Dyn11

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Features

1.Product Specification

Rated Power：200kVA

Rated Voltage：11/6.6-0.4kV

Rated current：10.5/17.5/288.68A

Rated Frequency：50Hz

Number of Phases：3 phase

Connection Symbol：Dyn11

Cooling Method：ONAN

Insulation Class：A

Insulation Level：LI 75 AC28 / LI AC3

200 kva 11kv 6.6kv 0.4kv dual voltage distribution transformer 6

2. Test Standard：

IEC60076

3.Test Item

3.1Voltage Ratio Measurement and Connection Group test
H.V.1 Winding		L.V. Winding	Rated Ratio	Voltage Deviation%			Connection Symbol
Tap position	Voltage （V）	Voltage （V）	Rated Ratio	AB/ab	BC/bc	CA/ca	Connection Symbol
1	11550		28.875				Dyn11
2	11275		28.188
3	11000	400	27.500
4	10725		26.813
5	10450		26.125
H.V.2 Winding		L.V. Winding	Rated Ratio	Voltage Deviation%			Connection Symbol
Tap position	Voltage （V）	Voltage （V）	Rated Ratio	AB/ab	BC/bc	CA/ca	Connection Symbol
1	7150		17.875				Dyn11
2	6875		17.188
3	6600	400	16.500
4	6325		15.813
5	6050		15.125
3.2 Winding Resistance Test Environment Temperature℃
Winding	Tap position	Measured Value（Ω）			Resistance unbalance percentage （%）
Winding	Tap position	A～B	B～C	C～A
H.V	1
	2
	3
	4
	5
L.V		a～b	b～c	c～a	Resistance unbalance percentage（%）

Winding	Tap position	Measured Value（Ω）			Resistance unbalance percentage （%）
		A～B	B～C	C～A	Resistance unbalance percentage （%）
H.V.2	1
	2
	3
	4
	5
L.V		a～b	b～c	c～a	Resistance unbalance percentage（%）

3.3 Insulation Resistance Measurement
Measurement Site	Insulation Resistance（MΩ）
HV—LV TO GROUND	≧1000
LV—HV TO GROUND	≧1000
HV&LV TO GROUND	≧1000
3.4 AC power withstand voltage Test
Pressurized parts	Test voltage（kV）	Duration（s）	Result
HV—LV TO GROUND		60	PASS
LV—HV TO GROUND		60
3.5 No load loss and no load current
Average voltage（kV）	RMS voltage（kV）	No-load current	No-Load loss（W）
（%）	Measured value
0.4	0.4
3.6 Induce Voltage Test
Tap position	Apply voltage（kV）	Induction voltage（kV）	Induction multiple	Frequency（Hz）	Duration（s）	Result
L.V	H.V
3
3.7 Impedance(%) and load loss test Environment Temperature ℃
Winding	Tap position	Apply current( A )	Test voltage ( KV )	Short circuit impedance （%）	Load loss （W）
Winding	Tap position	Apply current( A )	Test voltage ( KV )	Measured value	Measured value
H.V- L.V	3	10.5	0.4	t = 75℃ I=Ir	t = 75℃ I=Ir
3.8 Seal Test
Test method	Put pressure（kPa）	Residual pressure (kPa)	Duration（h）	Result
Air pressure				No leakage

Dual Voltage Transformer Wiring

200 kva 11kv 6.6kv 0.4kv dual voltage distribution transformer 7

FAQ

1.What Is A Dual Voltage Transformer

A dual voltage distribution transformer is a type of transformer that can provide multiple output voltage levels from a single input voltage. This is achieved by connecting two or more voltage taps on the transformer windings to the output terminals.

The primary winding of a dual voltage transformer is designed to be connected to a high voltage power source, typically in the range of 15kV to 33kV. The secondary winding has multiple taps that can be connected to the low voltage distribution network, typically at voltage levels of 400V or 230V.

The use of a dual voltage transformer can provide significant advantages in terms of system efficiency and cost savings. By using a transformer with multiple taps, it is possible to supply different voltage levels to different consumers, depending on their specific needs. This can help to reduce energy wastage and improve overall system performance.

Another benefit of using a dual voltage transformer is that it can reduce the number of transformers needed in a distribution network. This can make the system simpler and more cost-effective to operate.

In addition to their use in conventional power distribution networks, dual voltage transformers are also commonly used in renewable energy applications. For example, they can be used in wind farms or solar power plants to transform the variable output of the generators into a stable voltage suitable for distribution.

Overall, the dual voltage distribution transformer provides a flexible and efficient solution for power distribution applications, offering multiple voltage levels from a single input source, while also reducing the need for additional transformers in the network.

2.What is the price of 200 kva transformer

USD3221.00/SET

200 kva 11kv 6.6kv 0.4kv dual voltage distribution transformer 5