Application:
This switch is used for compounded type transformer. It is classified into four-position and two-position
products. The four-position switch is divided into "T" type, "V" type and "I". The switch is installed on the tank
well of compounded transformer, the transformer oil is used for its insulating and are eliminated material. It is
suitable for three phase power supply circuit with rated trequency 50Hz, rated voltage 10kV, 35kV, rated current
315 A and 630A. In the radial feed or loop feed supply system, it is used as controlling and protective device in
the industry civil used electric energy. When functioned by operating pole, the switch can drive three phase
linkage cut and close power resource or transfer supply method.
The on-load switch our company manufactures has innovative structure, excellent performance and high
reliability. It is tested qualified in every technical index b the National Transformer Quality Supervision and
Inspection Center. Its main features are as follow:
Feature:
1.The fixed contact of the same kind product is crab-claw form. With the increasing rotation of the switch, the
movable contact wears out more heavily, the pressure fixed contact put onto the movable contact declines, and
the contact resistance increases.
We change the fixed contact into clip-chip, and connect it with soft-connecting films, ensuring the contact
pressure with cylindrical spring to maintain a high contact pressure after 2000 times shifting and enable a
minimum contact resistance of fixed and movable contact. We also use high-quality copper alloy as the contact
material to make a lightest damage the arc will do to the contact when the contact shifts on-load, and enlarge
the contacting area to improve the current-passing capability.
2. Key components of our switch apply the overall steel casting technology, so the products are with high
mechanical strength.
3. Each plate-form spring has a deformation test before assembly to ensure the quality of the spring.
4. We use the latest type of insulation materials to ensure the switch a higher capability of withstand voltage
and withstand voltage.
Technical parameters:
| Rated voltage (kV) |
Power frequency withstand voltage (1min) (kV) |
Lighting withstand voltage (kV) |
| To ground or inter phase |
Insolating insulation between gaps |
To ground or inter phase |
Insolating insulation between gaps |
| 10 |
42 |
48 |
75 |
85 |
| 20 |
55 |
60 |
125 |
145 |
| 35 |
95 |
110 |
200 |
215 |
| Type of tap changer |
Rated current (A) |
Rated Voltage
(kV) |
Install Dimension (mm) |
|
| H |
H1 |
H2 |
H3 |
L |
L1 |
| BFY312-10/315-12.5-II |
315 |
10 |
465 |
37 |
86 |
172 |
187 |
102 |
| BFY312-10/630-16-II |
630 |
| BFY312-20/315-16-II |
315 |
20 |
500 |
43 |
97 |
180 |
222 |
120 |
| BFY312-20/630-20-II |
630 |
| BFY312-35/315-16-II |
315 |
35 |
540 |
43 |
110 |
195 |
222 |
120 |
| BFY312-35/630-20-II |
630 |
| BFY311-10/315-16-IV |
315 |
10 |
525 |
30 |
105 |
195 |
280 |
225 |
| BFY311-10/630-20-IV |
630 |
| BFY3V1-10/315-16-IV |
315 |
| BFY3V1-10/630-20-IV |
630 |
| BFY3T2-10/315-16-IV |
315 |
485 |
30 |
86 |
189 |
206 |
136 |
| BFY3T2-10/630-20-IV |
630 |
| BFY3T1-20/315-16-IV |
315 |
20 |
540 |
30 |
105 |
210 |
280 |
225 |
| BFY3T1-20/630-20-IV |
630 |
| BFY3T1-35/315-16-IV |
315 |
35 |
590 |
36 |
114 |
238 |
272 |
176 |
| BFY3T1-35/630-20-IV |
630 |
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!
Audited Supplier 
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