Zinc Oxide Varistor Block
Traditional fuses have problems such as insufficient insulation performance, complex maintenance, and susceptibility to environmental influences. As a professional factory, SARAH Electric offers Zinc Oxide Varistor Block. This product is designed specifically for outdoor high-voltage environments, using high-performance polymer insulation materials and optimized mechanical structures to provide stable overcurrent protection. It is widely used in distribution networks, substations, industrial facilities, and other scenarios.
SARAH Electric's high-quality Zinc Oxide Varistor Block features a maintenance free design, with no moving parts and no need for lubrication or adjustment during long-term operation, reducing maintenance costs. We will do everything possible to reduce operational steps and save labor costs for you!
Product parameters
Surge Arrester Discharge Counter
|
Model No. |
Rated Voltage(kV) |
Nominal Discharge Current (kA) |
Operation Current Range |
Current Impulse Residual Voltage (kV) |
Long Impulse Withstand Current 2ms (A) |
4/10 High Current Impulse Withstand(kA) |
| JS-8 | 3-66 | 5 | 50-5000 | <1 | 400-800 | 65-100 |
| JCQ | 3-220 | 10 | 50-5000 | <1 | 600-800 | 100 |
Surge Arrester Disconnector
| Power Frequency Current(A rms) |
2000μs Long Duration Current Impulse(A) |
4/10us High Withstand Current(kA) |
|
| Time in Seconds | Current Level | ||
| <0.2 | 20 | 600 | 100 |
| <0.05 | 300 | ||
| <0.02 | 800 | ||
Low Voltage Surge Arrester Porcelain type
| Destination | Code No. |
System Voltage kV (r,m,s) |
Rated Voltage kV (r,m,s) |
MCOV kV (r,m,s) |
8/20μs Lighting Current Impulse kV(crest) |
Reference Voltage At 1mA DC kV |
Long Impulse Withstand Current 2000μs A(crest) |
4/10μs High Current Impulse Withstand kV(crest) |
|
Low Voltage |
YC1.5W-0.28/1.3 | 0.22 | 0.28 | 0.24 | 1.3 | 0.6 | 50 | 10 |
| YC1.5W-0.5/2.6 | 0.38 | 0.5 | 0.42 | 2.6 | 1.2 | 50 | 10 |
Zinc Oxide Varister Block
|
Model No. |
Dimension(mm) |
Nominal Standard Discharge Current (kA) |
Rated Voltage (kV) |
MCOV (kV) |
8/20μs Lightning Impulse Residual Voltage (kV) |
2000/μs Square Impulse Current Withstand (A) |
4/10μs High Current Impulse (kA) |
|
| Diameter | Height | |||||||
| D30 | Φ30±0.2 | 24±0.5 | 5 | 3-3.4 | 2.55 | 9.1 | 100 | 65 |
| D32 | Φ32±0.2 | 24±0.5 | 5 | 3-3.4 | 2.55 | 9.3 | 100 | 65 |
| D35 | Φ35±0.2 | 24±0.5 | 5 | 3-3.4 | 2.55 | 9.1 | 100 | 65 |
| D38 | Φ38±0.2 | 24±0.5 | 10 | 3-3.4 | 2.55 | 9.3 | 200 | 65 |
| D40 | Φ40±0.2 | 24±0.5 | 10 | 3-3.4 | 2.55 | 9.1 | 250 | 100 |
| D42 | Φ42±0.2 | 24±0.5 | 10 | 3-3.4 | 2.55 | 9.2 | 250 | 100 |
| D48 | Φ48±0.2 | 24±0.5 | 10 | 3-3.4 | 2.55 | 9.0 | 400 | 100 |
| D53 | Φ53±0.2 | 24±0.5 | 10 | 3-3.4 | 2.55 | 8.9 | 400 | 100 |
| D60 | Φ60±0.2 | 24±0.5 | 20 | 3-3.4 | 2.55 | 9.1 | 600 | 100 |
| D70 | Φ70±0.2 | 24±0.5 | 20 | 3-3.4 | 2.55 | 9.2 | 800 | 100 |
Function
1. When a short circuit or overload occurs in the circuit, the fuse quickly melts, triggering the melting tube to automatically fall, forming a clear disconnection point, achieving physical isolation between the faulty circuit and the main system, and ensuring maintenance safety.
2. The Zinc Oxide Varistor Block adopts polymer composite insulators, which have excellent hydrophobicity and pollution flashover resistance, suitable for harsh environments such as humidity, salt spray, dust, etc., effectively preventing flashover and breakdown.
3. No continuation current, no reignition, built-in arc extinguishing device, no power frequency continuation current after melting, to avoid arc reignition and ensure system stability.
Product advantages
SARAH Electric offers multiple specifications such as 12kV, 24kV, and 33kV (such as SJC-17, SJC-18, SJC-19, SJC-25) to meet the requirements of different voltage levels.
Taking SJC-25 as an example, the rated voltage is 33-38kV, the rated current is 100A/200A, the breaking current is 6kA, the lightning impulse withstand voltage is 200kV, the power frequency withstand voltage is 95kV, the leakage distance is 1100mm, the weight is 5.5-5.7kg, and the size is 58 × 34.5 × 14.5cm.
Divided into two rated current specifications of 100A and 200A, suitable for different load demand scenarios, such as distribution networks, substations, industrial infrastructure, etc.
Application
Distribution network: 10kV, 35kV lines, pole mounted transformers, substation areas, and box type substations.
Substation: 3-35kV switchgear, transformers, circuit breakers, busbar protection.
Industrial/infrastructure: factories, mines, residential areas, photovoltaic/wind power box transformers, cable terminals.
Outdoor equipment: pole mounted switches, ring main units, and cable branch boxes can all be connected using our Zinc Oxide Varistor Block
Shipment and Service
Regular models (such as SJC-17, SJC-18) have sufficient inventory and support same day shipment.
Customized Zinc Oxide Varistor Blocks can be provided for special voltage levels or installation environments to meet specific customer needs.
Send Inquiry
Contact Info
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Address
No.101-103, Fu Hua Road, Leshang Chuangye Yuan, Wengyang Industrial Zone, Yueqing, Wenzhou, Zhejiang, China
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Tel
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Email
For inquiries about electrical transformer, surge arrester, fuse cutout or price list, please leave your email to us and we will be in touch within 24 hours.
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