Audited Supplier
Liyang indoor type alternating-current metal-clad mid-set withdrawable switchgear is applicable for three-phase power systems of AC50Hz and 3.6~12kV, used for electric energy receiving and distribution, is a PTD control device for single-bus segment systems. It is mainly used in power plants and substations for power transmission, and industrial and mining enterprises for power distribution, as well as secondary substations for power receiving and transmission and starting of large high-voltage motors, etc, realizes control, protection and monitoring.
1.Fully compatible with technical performances and schemes of KYN28A-12, GZS and other switchgears.
2.More mechanical interlocking protection and operation characteristics.
3.Complete mechanical interlocking protection and operation characteristics.
4.A variety of configurations of vacuum circuit breakers.
5.w-vac vacuum circuit breaker from Westing House Corporation.
6.VD4 vacuum circuit breaker from Corporation.
7.3AH5 vacuum circuit breaker from SIEMENS.
8.10-VPR vacuum circuit breaker from MITSUBISHI.
9.ZN28GE and VB2 vacuum circuit breakers from GE.
10.EV12 vacuum circuit breaker from Merlin Gerin.
11.VS1 vacuum circuit breaker from Senyuan Corporation.
12.All kinds of homemade vacuum circuit breakers such as VS1, ZN28, ZN63, ZN, etc.
Adoption of imported and homemade microcomputer-based monitor and remote controller, or electromechanical relay protection and meter monitoring.
Luxurious imported type, universal type and economical type for option. 
Technical parameters
Outline dimension of switchgear (mm)
| Breaker model | W-VAC | VPR | 3AH5 | VD4,VS1,ZN28,ZN63 | |
| Height (H) | 2300 | 2300 | 2300 | 2300 | |
| Width (W) | ≤1250A>1600-3150A | 700 800 | 800 1000 | 800 1000 | 800 1000 |
| Depth (D) | 1660 | 1660 | 1600 | 1500 (Note 2) | |
Note: 1. Cabinet width is 800 except the breaker cabinet whose width varies.
2. Depth of incoming/outgoing cables is 1660.
Main technical parameters of switchgear
| Item | Unit | Data | |
| Rated voltage | KV | 3.6,7.2,12 | |
| Rated insulation level | 1min power frequency withstand voltage Lightning impulse voltage (full wave) | KV KV | 24,32,42 40,60,75 |
| Rated frequency Rated current Rated current of main bus Rated current of branch bus 4s short-time withstand current (effective value) Rated peak withstand current (peak) | Hz A A A KA KA | 50 5-3150 1600,2000,2500,3150 630,1250,1600,2000,2500,3150 16,20,25,31.5,40,50 40,50,63,80,100,125 | |
| Protection class | The shell is IP4X, and it is IP2X when the circuit breaker chamber door is opened | ||
Note: please take the breaker model into consideration especially for short-circuit capacity of current transformer.
| Corporation | C-H | SIEMENS | GE | Mitsubishi | Homemade | |
| Model | W-VAC | Vd4 | 3AH5 | ZN28GE,VB2 | VPR | VS1,ZN28,ZN63… |
Working environment
2. Daily average temperature(Within 24h): ≤+35ºC
3. Altitude : less than 1000m;
4.. Relative humidity: within 24h, daily average value ≤ 95% , daily average vapor pressure≤ 2.2KPa;
monthly average value ≤ 90%, monthly average vapor pressure≤ 1.8KPa
* Ambient air is not significantly polluted by dust, smoke, corrosive and / or flammable gas, vapor or salt contamination
Payment Term
| Payment Terms | T/T | EXW | 30% T/T in advance, the balance to be paid before dispatch |
| FOB | |||
| CIF | 30% T/T in advance, the balance to be paid against the copy of B/L | ||
| CFR (C&F) | |||
| L/C | Irrevocable L/C at sight could be accepted if amount above US $50,000.00 | ||
| Delivery Time | 7 to 10 working days after receiving advanced payment | ||
Q:what's your major products?
A: oil immersed transformer, dry type transformer, Transformer Substation, High and Low Voltage Switchgear
Q: Can your product be customized?
A: Considering differences in voltage, frequency and other special transformer product in different countries and regions, our product can be customized according to your requirements.
Q: When can I get the price?
A:Usually we quote within 24 hours after we get your inquiry.
Q: What about lead or shipping time?
A: The lead time depends on the quantity you ordered, generally within 15 days upon receipt of advance payment.
Q: What is the price of shipping?
A: Depending upon the port of delivery, prices varies.
Q: Do you offer guarantee for the products?
A: Yes. We offer at least one years guarantee for all of our transformers.
Q: Your Advantage?
A: 15 years experience, Advanced production equipment, Stable quality, Fast delivery, Professional & good & Prompt service. Also some free parts can be provided for you.
