S9-M-30-250010 Hermetically-sealed distribution transformer

Ref Price:
Loading Port:
Payment Terms:
Min Order Qty:
Supply Capability:
1000sets set/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Production introduction

Installation mode:indoor/outdoor type
Ambient temperature:-25oC~+40oC(outdoor) -5oC~+40oC(indoor)
Highest altitude:1000m
Installation site:in places without corrosive gases and obvious dusts.

Applicable standards
GB1094.1-2-1996 Power Transformer
GB1094.3;5-2003 Power transformer
GB/T6451-1999 Technical parameters and requirements for three-phase oil-immersed power transformer

Model designation

Performance characteristics
1.A multilayer cylinder structure is used for all high voltage windings in order to improve the voltage impulse distribution of windings.
2.For the capacity range of low voltage windings is from 30kVA to 2000kVA,the cylinder type or spiral structure is used to ensure the high mechanical strength,ampere lure distribution,and excellent short-circuits proof performance.
3.The securing structure is set in the transformer body,which is used for ensuring that no displacement will occur during the transportation;meanwhile,the turnbuckles are mounted in fasteners,which is for assuring that fasteners will not be loose during the long term operation.
4.Corrugated tanks are used in transformer for replacing the conservator.The tank enclosure and rim are completety sealed by welding or bolting up,which prolongs the service life of transformer oil.
5.The transformer surface are painted with primer and finish coats after derusting,and phosphorizing;which can meet the special operation requirements in metallurgic and petrochemical industries,as well as,in moist and dirty places.
6.The press relief valves,signal thermometers,and gas relays are equipped in the oil tank of hermetically sealed transformer in order to the standard requirements for safe operation.The transformers are attractive and competitive due to the compact shape,excellent design,and maintenance-free.

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:±4×2.5% ±3×2.5% other
Connection group:Yyn0 Dyn11 other
Impedance voltage:4% 6% other

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:what is the difference between transformer and transistor?
A transformer is passive, to simplify it changes the voltage either up or down as a ratio of the number of windings on each side. Transistors can be used many ways. To amplify a voltage the transistor itself does not change the voltage but acts as a sort of valve. The higher voltage is actually supplied to it and it opens the valve to allow the higher voltage to pass .
Q:Parallel AC transformers?
Transformers are connected with their primaries in parallel quite often. However don't connect the secondaries in parallel. For instance a step down 120 to 6.3 volt transformer can be used to power the filaments of a vacuum tubes in an amplifier while a stepup 120 to 350 volt transformer is used to provide the operating voltage for the tubes. Both transformers would use the same input voltage and would run off the same ac line. In practice both the step up and step down transformers end up being combined into one transformer.
Q:What is transformer in-rush current? Approximately how long does it last? Why is this information important?
A transformer steel core's remanence means that it retains a static magnetic field when power is removed. When power is then reapplied, the residual field will cause a high inrush current until the effect of the remanent magnetism is reduced, usually after a few cycles of the applied alternating current. Overcurrent protection devices such as fuses must be selected to allow this harmless inrush to pass. When a transformer is livened, the magnetizing inrush currents are estimated as multiples of the transformer's nameplate kVA. Time Current (sec) - (amps) 0.01 -- 25x 0.10 -- 12x In addition, during the normal life of a transformer you can expect hot-load and cold-load pick-up events. These are estimated as Time Current 1.00 -- 6x 10.0 -- 3x 100. -- 2x You must select transformer fusing that will not be damaged by these events. Drop me an e-mail for a more detailed explanation.
Q:Transformer and the middle of what is the difference
In the week is the IF transformer or inductance coil, is a fixed resonant circuit with a transformer, the resonant circuit can be fine-tuning within a certain range, so that access to the circuit can achieve a stable resonant frequency.
Q:transformers ending?
I think he says they lost a great warrior. The Autobots stay on Earth and will try to live peacefully among humans. Sam and Michaela end up together. They also leave it open for a sequel because one of the bad robots (the tiny one that tried to break into the government's system before the Australian girl caught him) escapes back to his home planet. Presumably to bring back more of the bad Transformers. I have read that they plan to begin shooting the sequel soon - will possibly be out in the summer of 2010.
Q:Solar energy and transformers?
You cannot create energy with an electrical transformer. A transformer will step up or step down voltages. When you step up the voltage, you proportionally step down the current (amps/amperes) and vice versa. When you are measuring electrical energy, you measure it in watts. To determine watts you multiply voltage times amperest. So while the transformer steps up the voltage it steps down the ampereage (current) so you are theoretically getting the same energy on either side of a transformer. One side has high current but low voltage and the other has low current but high voltage. If you do the math, you find that in the end, the energy amount is theoretically the same. However, you must also factor in line losses, core losses and impedance into the equation. This is because no transformer known to man is 100% efficient. So since the transformer itself actually wastes a certain amount of energy, you will find that by using a transformer to increase the voltage, you will actually wind up LOSING energy just by using it. With energy you just can't get something for nothing no matter how hard you try. PAD
Q:Electrical Transformers?
Its two sets of windings (sometimes more but simple one is two), usually copper with enamel coating. The are both wound on the same iron core. The iron core is laminated to reduce losses. The transformer ratio is determined by the number of windings. A primary of 1000 windings and secondary of 100 windings would give a voltage output 1000/100 10 times less than the input. The same transformer could be used to give 10 times more by putting the voltage into the other winding.
Q:What is a transformer paused?
5. Users who charge the basic electricity charges according to the maximum demand shall apply for the suspension of all the capacity (including high-voltage motors that do not pass the receiving transformers) and comply with the relevant provisions of Clauses 1 to 4 of this Regulation.
I only remember the song. Transformers more than meets the eye. Transformers robots in disguise. I think it's fantastic that he's making you learn about them. Be geeky with your boyfriend. It's important to him, so it should be important to you. Otherwise how do you expect him to respect you when you think it's important.
Q:What Do You Think Of Transformers?
yea its really great but it gets really boring and out of hand in the middle but its a great movie with nonestop action and laughs. Main reason I went to see because of Shia Labeouf so w/e :P I love Shia!!

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range