Distribution Surge Arrester
Distribution surge arrester offer excellent protection against overvoltage for any electric distribution equipment. It is designed to protect the overhead distribution network from overvoltage up to 36 kV.
With lightweight and crimpled structural construction, distribution surge arrester provides optimal mechanical strength, which also makes ideal for hash environment conditions. It offers optimum and field-proven protection that help reduce operating costs and enhance reliability, especially in wildlife management.
Manufactured using high-quality zinc oxide varistors, the polymeric composite material of the distribution surge arrester enables it to have superior thermal and current handling aspects. The manufacturing process guarantees optimum interface sealing and void-free construction.
The application of distribution surge arrester includes protection of medium voltage distribution equipment and networks from lightning and switch related overvoltages. This is especially in areas that have high levels of iso-keraunic. They are also used to protect cable terminations and transformers.
Key Features
- Cage design with surge arrester technology
- Long self-life and superior operating performance
- Hydrophobic silicone housing, making it ideal for outdoor applications
- Directly molded housing to prevent moisture ingress
- Safe non-shattering short circuit feature for high current levels
- Different varieties such as normal duty, heavy-duty and heavy-duty riser pole
|
Type
|
Rated voltage
|
Maximum continuous operation voltage
|
Max.residual voltage
|
2000μs
Square wave current impulse withstand
|
4/10μsHigh current impulse
|
||
|
Steep current impulse
|
30/60μs
Switching current impulse
|
8/20μs
Switching current impulse
|
|||||
|
KV(rms)
|
KV(rms)
|
KV(crest)
|
KV(crest)
|
KV(crest)
|
A(crest)
|
KA(crest)
|
|
|
YH5W-9
|
9
|
7.65
|
33.7
|
23.8
|
27
|
100
|
65
|
|
YH5W-10
|
10
|
8.4
|
36.0
|
26.4
|
30
|
100
|
65
|
|
YH5W-11
|
11
|
9.5
|
40
|
30
|
33
|
100
|
65
|
|
YH5W-12
|
12
|
10.2
|
42.2
|
31.7
|
36
|
100
|
65
|
|
YH5W-15
|
15
|
12.7
|
51
|
38.5
|
45
|
100
|
65
|
|
YH5W-18
|
18
|
15.3
|
61.5
|
46.5
|
54
|
100
|
65
|
|
YH5W-21
|
21
|
17.0
|
71.8
|
54.5
|
63
|
100
|
65
|
|
YH5W-24
|
24
|
19.5
|
82
|
62.6
|
72
|
100
|
65
|
|
YH5W-27
|
27
|
22
|
92
|
69.8
|
81
|
100
|
65
|
|
YH5W-30
|
30
|
24.4
|
102
|
79
|
90
|
100
|
65
|
|
YH5W-33
|
33
|
27.5
|
112
|
86.7
|
99
|
100
|
65
|
|
YH5W-36
|
36
|
29.0
|
123
|
92.4
|
108
|
100
|
65
|
|
YH5W-42
|
42
|
34.0
|
126
|
101
|
111
|
100
|
65
|
|
Type
|
Rated voltage
|
Maximum continuous operation voltage
|
Max.residual voltage
|
2000μs
Square wave current impulse withstand
|
4/10μsHigh current impulse
|
||
|
Steep current impulse
|
30/60μs
Switching current impulse
|
8/20μs
Switching current impulse
|
|||||
|
KV(rms)
|
KV(rms)
|
KV(crest)
|
KV(crest)
|
KV(crest)
|
A(crest)
|
KA(crest)
|
|
|
YH10W-9
|
9
|
7.65
|
31
|
23.1
|
27
|
250
|
100
|
|
YH10W-10
|
10
|
8.4
|
33
|
27.0
|
30
|
250
|
100
|
|
YH10W-11
|
11
|
9.5
|
36.4
|
30.0
|
33
|
250
|
100
|
|
YH10W-12
|
12
|
10.2
|
38.5
|
30.8
|
36
|
250
|
100
|
|
YH10W-15
|
15
|
12.7
|
46.5
|
38.5
|
45
|
250
|
100
|
|
YH10W-18
|
18
|
15.3
|
56
|
46.2
|
54
|
250
|
100
|
|
YH10W-21
|
21
|
17.0
|
65.5
|
53.9
|
63
|
250
|
100
|
|
YH10W-24
|
24
|
19.5
|
75
|
61.6
|
72
|
250
|
100
|
|
YH10W-27
|
27
|
22.0
|
84
|
69.3
|
81
|
250
|
100
|
|
YH10W-30
|
30
|
24.4
|
93
|
76.5
|
90
|
250
|
100
|
|
YH10W-33
|
33
|
27.5
|
101
|
84.7
|
99
|
250
|
100
|
|
YH10W-36
|
36
|
29.0
|
112
|
92.4
|
108
|
250
|
100
|
|
YH10W-42
|
42
|
34.1
|
126
|
101
|
111
|
250
|
100
|
Related Products
Types of Distribution Surge Arresters
Distribution surge arresters are grouped into three types: Normal Duty (ND), Heavy-Duty (HD) and Heavy-Duty Riser distribution surge arresters. How they protect equipment in terms of protection level is what sets them apart.
Normal Duty Arrester
If you are looking for suitable distribution surge arrester that can best work areas that less lighting activity, then the normal duty arrester is the real deal. This is because of its base level protection against overvoltage.
Heavy Duty Arrester
This arrester works best in areas that have severe lighting current because of its lower, better discharge voltage. The system voltages for this surge arrester ranges from 2.5 to 36 kV.
Heavy Duty Riser Pole Arrester
Compared to the first two distribution surge arresters, this arrester surpasses them in terms protection level. Therefore, it is recommended to use it to underground distribution equipment and cables. It offers reliable and fast connection through its high strength fiberglass and integrated ground lead disconnect. Its polymer housing also ensures ultimate seal against moisture ingress.
Choosing Considerations of a Distribution Surge Arrester
As a user, you need to consider certain arrester specification when planning to install a distribution surge arrester. Therefore, it is recommended you check system or network parameters so that your product can be adequately optimized for better performance. Optimization can guarantee protection against overvoltage and reduce the risk of network outage. The system parameters include:
- The area’s pollution level
- The operating voltage of the system
- The equipment’s Basic Insulation Level (BIL)
- The arrester connection (Phase to earth)
- Duration or earth fault factor, max earth fault voltage and earth fault conditions
- System grounding, resistance grounded, solid, isolated
- How to connect the earth and line
- Temporary Over Voltage (TOV) levels or earth fault factor