ZGS-200-1000-10 Combined transformer

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Shanghai
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TT OR LC
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-
Supply Capability:
1000sets set/month

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Product Description:

Production introduction
1.ZGS 11 combined transformer is one of the hightech products developed by our company on the basis of pad-mounted transformer.
2.Range of capacity:200-1000KVA.The product is suitable for the neutral-point insulation system or small-resistance grounding system in a 10KV distribution network,or neurtal-point solid grounding system of a three-phase four-wire system in a 400V distribution network.
3.Excellent design,reliable distribution,compact structure,light in weight,and low noise,ect;it has two types of cable outlets;ring net type and terminal type.
4.The product can be placed directly into the load center of 10KV network,thus the line loss is reduced and power distribution reliability is increased.

Performance characteristics
1.The ZGS11 combined transformer consists of high-voltage and low-voltage chambers and transformer tank in the operation chambers.
2.H.V.incoming lines in 10KV cross-linked cables are connected to load switch through knuckle connectors,straight plugs and sleeve sockets.
3.On the high-voltage side,a protection of double fuses(backup current-limiting fuse and plug-in type of fuse are used).
4.There are terminal type and ring net type high-voltage load switches for selection.
They are easy to connect,convert and reliable for power supply.
5.In the low-voltage chamber,a fixed type or drawable type is optional for the low-voltage switch cabinet according to user's requirement.Various low-voltage apparatus,such as metering and protection instruments are available.(Note:In general they are customized)
6.The oil tank is fully-sealed by corrugated radiators,which features compact and superior appearance.

Model designation


Applicable standards
GB1094.1-2-1996 Power Transformer
GB1094.3-5-2003 Power Transformer
JB/T10318-2002 Technical parameters and requirements for oil-immersed,non-crystal alloy iron core,distribution transformer.

Normal service conditions
Installation type:indoor/outdoor type
Ambient temperature:-25oC~+40oC
Altitude:≤1000m
Humidity:daily average value≤95%,monthly average value≤90%
Installation site:in places without corrosive gases,obvious dusts and water-vapour;the gradient is no more than 3% and no fierce shock.

Performance Characteristics
1.Compare with type "9" transformer,the product's no-load loss is reduced by 30% and thus the average annual operating costs can by reduced by 20.03%.
2.The transformer body,high voltage load switch fuses and no-excitation tapping switches are all put into the fully-sealed oil tank,which make good use of the space.Therefore,the overall size of the product is only 1/3 of that of the similar product.
3.The plug-in and out cable connection is easy for operation.
4.An obstacle protection is of two-stage fuses structure(backup current-limiting fuse and plug-in type fuse) which ensures a safe and flexible operation and more convenient for replacing of fuse.
5.The oil tank is fully-sealed,in which the oil is totally isolated from the outside.No leakage and maintenance free.
6.Excellent short-circuit proof capacity and high reliability.

Notes for placing orders
Transformer type:rated capacity kVA
Number of phases:three-phase single-phase
High voltage:kv/Low voltage:kv
Frequency:50HZ  60HZ
Tapping range:±2×2.5%±5%other
Connection group:Yyn0  Dyn11  other
Impedance voltage:4%  6%  other

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Q:220 kv transformer capacity range,
I have seen the 220kV power transformer minimum 63MVA, the largest 250MVA, there is no such specification is not clear, it is estimated that small and small is not where to go, and then big is not where to go for reference The
Q:What is the meaning of the transformer without excitation?
Non-excitation voltage regulator is relative to the load regulator, the load regulator, then the tap switch need to consider switching the transformer when the freewheeling to ensure that the current is continuous, does not affect the power grid, but no excitation regulator Is the state of the power regulator, the tap-changer does not need to re-flow to the transformer, so there is no type of freewheeling components
Q:Three-phase transformer how to calculate the current, ah, the formula is?
Very simple S = 1.732 * U * I, get: I = S / (1.732 * U) such as transformer capacity S = 1000KVA, high side 10.5KV I = 54.99 A low side 400V I = 1443A
Q:How much W?
Ee22 how much of the transformer can be related to the material used. If the material is good, high frequency loss is relatively small. Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.
Q:Transformer charging
Is not wrong. Transformer itself is not stored function, that is, there is also a very short cut. You say is not to the transformer power ah
Q:150KVA transformer can withstand much power, how to calculate
150KVA is the capacity of the transformer, it can output the maximum power is 150KW. KVA = KW capacity number is the number of power without calculation
Q:A liter of transformer oil how much jin
(3) arc suppression effect: In the oil circuit breaker and transformer on-load regulator switch, the contact will produce an arc switch. As the transformer oil thermal conductivity is good, and in the arc under the action of high temperature can touch a lot of gas, resulting in greater pressure, thereby enhancing the dielectric arc performance, so that the arc quickly extinguished.
Q:Transformer capacity unit KVA?
The rated value of the output capacity of the transformer in the rated state is expressed in kilowatts (kVA) (VA and MVA are not commonly used). Since the transformer has a high operating efficiency, the original, secondary winding (winding deformation Tester) rated capacity equal to the design value. KV.A is the capacity of the transformer, KVA is the apparent power, its size and power factor. KV and KVA conversion relationship 1 kV (kV) = 1000 V (V) 1 V (V) = 1000 mV (mV) Kilovolts greater than volts greater than millivolts, the rate of 1000. 1 V (V) = 1000000 VV (μv) 1 MV (MV) = 1000000 V (V)
Q:Why is the transformer coil insulation?
Because the transformer is used in different environments, according to different insulation level selection, can extend the life of the transformer. Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.
Q:What are the malfunctions and abnormal operation of the transformer?
working principle: Transformer is the use of electromagnetic induction principle made of static appliances. When the transformer's original coil connected to the AC power supply, the core will produce alternating magnetic flux, alternating magnetic flux with φ said. The original, the secondary coil φ is the same, φ is also a simple harmonic function, the table for the φ = φmsinωt. By Faraday's law of electromagnetic induction, we can see that the induced electromotive force in the original and secondary coils is e1 = -N1dφ / dt, e2 = -N2dφ / dt. Where N1, N2 is the original, the number of turns of the secondary coil. U1 = j1n1, U2 = E2 = -jN2ωΦ, and the complex value is U1 = -I1 = jN1ωΦ, U2 = E2 = -jN2ωΦ, and the complex value is U1 = Let k = N1 / N2, said the variable ratio of the transformer. U1 / U2 = -N1 / N2 = -k, that is, the ratio of the original value of the transformer and the secondary coil voltage, is equal to its turns ratio and the difference between the original and the secondary coil voltage is π. And then come to: U1 / U2 = N1 / N2 In the case of no-load current, I1 / I2 = -N2 / N1, that is, the original and secondary coil current RMS value is inversely proportional to the number of turns, and the phase difference π. And then available I1 / I2 = N2 / N1 Ideal transformer original, vice coil power equal P1 = P2. Indicating that the ideal transformer itself without power loss. The actual transformer always has the loss, its efficiency is η = P2 / P1. Power transformers are highly efficient and up to 90%.

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