Zmd High-Quality on-Load Tap-Changer Below 252kv for Three Phase Neutral Point Voltage Regulation

Zmd High-Quality on-Load Tap-Changer Below 252kv for Three Phase Neutral Point Voltage Regulation image

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Basic Info.

Model NO.

ZMD

Connection

Material

Glass Fiber Reinforced Epoxy

Standard

IEC CE, ISO

Transport Package

Wooden Cases

Specification

According to specification

Trademark

VILLE

Origin

Ningbo

HS Code

Production Capacity

50000 Sets

Product Description

ZMD on load tap changer

General

ZMD on-load tap-changer is a high-quality, high-tech product through digestion, absorbing and introducing
technology,combined with years of on-load tap-changerproduction and management. It is suitable for voltages
below 252kV and a maximum rated current of three-phase 300A. , 500A, 600A, 1000A, single-phase 300A,
500A, 600A, 800A, 1200A, 1500A, power transformer or industrial transformer with rated frequency of 50 or 60Hz.
Suitable for three-phase Y-connection neutral point voltage regulation,single-phase voltage regulation at any part.

Type designation

Product features

The diverter switch of the ZMDIII100A on-load tap changer adopts a four-resistance excessive tail push

compensation switching mechanism, which generates three arcs during switching (double-resistor type

generates two arcs), and the switching capacity allocated to each arc is low, which improves the switching

capacity. In addition, the recovery voltage at the fracture of the arc contact is low, which is beneficial to

extinguishing the arc and improves the level voltage.

The lead wire of the tap selector adopts a mature outer sheath lead method. The central insulating column and

the contact ring are not only simple in structure, but also have a large insulation margin. Compared with the

external lead method, each phase reduces two lead-out rings and lead-out contacts, and shortens the axial size

of the tap selector.

Conversion selector: Compared with the existing cylindrical tap selector structure, its moving contact system reduces

movement conversion links, reduces the transposition connection of conductors, and improves the contact and

positioning reliability of the conversion selector. Design according to the coarse and fine adjustment of the insulation

level. It can be used for both positive and negative adjustment transformers and coarse and fine adjustment

transformers.

The moving contact of the tap selector of the ZMDIII1000A OLTC adopts double-layer multi point contact, with reliable

contact, low resistance, low temperature rise, large current carrying and strong short-circuit resistance.

The tap selector structure adopts a semi-closed cylindrical structure composed of an insulating cylinder and an

arc-shaped insulating plate. Strong anti-traction ability. It is not easy to be deformed or damaged during installation

and transportation;the structure is compact, the radial installation size is small, and the space is small.

Company Profile
Main product line: Tap changer and HV switchgear
Tap changer manufacturing with fullest vertical integration
Tap Changer Products Range On-Load Tap Changer:
* Conventional OLTC for transformer with voltage up to 765kV
*Vacuum OLTC for oil transformer with voltage up to 765kV
*Vacuum OLTC for dry transformer with voltage of 72.5kV
Off-Circuit Tap Changer
* Application for the transformer with voltage up to 765kV

Our Services

1.	Pre sale service
a.	make technical solution
b.	send quotation, technical data sheet and drawing
c.	prepare power transmission plan, testing plan and shipment plan
2.	In sale service
a.	supervise the manufacturing schedule totally in accordance with the plan
b.	send photos to customer during every manufacturing process(hold point)
c.	inform the customer one week before testing.
3.	After sale service
a.	installation and commissioning, training the workers
b.	quick response within 12 hours any time
c.	provide 12 months guarantee period normally.

FAQ

1. Q:	What is your delivery time ?
A:	Depend on the type of transformer.
2. Q:	What is your payment term?
A:	30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it.
3. Q:	What kind of standard you follow?
A:	IEC, ANSI, CSA, GB, etc
4. Q:	What kind of supporting documentation you can provide normally
A:	Quotation, outline drawing, manufacturing plan, quality control plan testing plan, financial report, type test report(KEMA, CESI),reference list, etc
5. Q:	What is your normal warranty period?
A:	12 months after transformer operation.
6. Q:	Can u do installation and commission in user’s site?
A:	Yes, we can send our installation team to user’s country for service.
7. Q:	Do you have any experience in this kind of transformer?
A:	Yes, we can provide reference list for check.

Our advantages:

Quality Assurance

–From the very beginning, VILLE ensures quality in every step to achieve the best quality.

Experience Sharing

–With more than 30 years’ experience in power industry, VILLE brings you an optimized solution.

Global Service

–Wherever you are, VILLE global network will support and provide you with value.

Quick Response

–In response to your needs without delay, VILLE knows the value of your time.

Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!
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