Massive productions of surge arrester(MOA), either with porcelain or polymeric housing, are suitable in the systems of power generation,power transmission, power transformation.and power distribution under AC 220kV and below. They are mainly used to keep the amplitude of lighting impulse withstandvoltage and switching impulse withstand voltage to the prescribed level.
Surge arrester is the most advanced over-voltage protector in the world.lts core element, metal oxide varistor(MOV).
Under the circumstance of normal operating voltage, the current through the surge arrester is just on microampere degree. When suffered from over-voltage, the surge arrester’s excellent non-linear characteristic will make the current through the surge arrester increase to several thousand amperes. And the surge arrester will be under the circulating state and release over-voltage energy so as to protecting the power transmission equipment againstthe damage caused by the over-voltage.
1.Low residual voltage
2.Long protection distance
3.High energy input capacity
4.Stable volt-ampere characteristic even after multiple strokes
5.Proof against ageing
6.Explosion and shatter-resistant design
7.Pollution resistant and UV-stable
8.Housing resistant to rough handling
9.Maintenance free
10.Stable against shock and vibration
11.High mechanical resistance
1.Ambient air temperature within the range of -40℃ to +40℃℃
2.Altitude above sea level not exceeding 2,000m;
3.Frequency of the A.C.power supply being 50Hz or 60Hz;
4.Power frequency voltage applied continuously between the terminals of the arrester not exceeding its continuous operating voltage.
5.Maximum wind speed not exceeding 35m/s:
6.The earthquake intensity not exceeding 7 degrees.
Main technical Parameters:
| Type | Rated voltage | Maximun Continuous Operating Voltage |
1/4us Lightning Current impulse |
8/20us Lightning Current impulse |
30/60us Switching Current impulse |
2ms Rectangular current impulse withstand |
4/10us High current impulse withstand |
|---|---|---|---|---|---|---|---|
| kV | kV | kV(peak) | kV(peak) | kV(peak) | A | kA(crest) | |
| HY5W-3 | 3 | 2.55 | 11.3 | 9 | 8.9 | 120-200 | 65-75 |
| HY5W-6 | 6 | 5.1 | 22.6 | 18 | 16.8 | 120-200 | 65-75 |
| HY5W-9 | 9 | 7.65 | 33.7 | 27 | 23.8 | 120-200 | 65-75 |
| HY5W-10 | 10 | 8.4 | 36.0 | 30 | 23 | 120-200 | 65-75 |
| HY5W-11 | 11 | 9.4 | 40.0 | 33 | 30 | 120-200 | 65-75 |
| HY5W-12 | 12 | 10.2 | 42.2 | 36 | 27 | 120-200 | 65-75 |
| HY5W-15 | 15 | 12.7 | 51.0 | 45 | 38.5 | 120-200 | 65-75 |
| HY5W-18 | 18 | 15.3 | 61.5 | 54 | 46.2 | 120-200 | 65-75 |
| HY5W-21 | 21 | 17.0 | 71.8 | 63 | 54.2 | 120-200 | 65-75 |
| HY5W-24 | 24 | 19.5 | 82.0 | 72 | 62 | 120-200 | 65-75 |
| HY5W-27 | 27 | 22.0 | 92.0 | 81 | 69.8 | 120-200 | 65-75 |
| HY5W-30 | 30 | 24.4 | 102.0 | 90 | 79 | 120-200 | 65-75 |
| HY5W-33 | 33 | 27.5 | 112.0 | 99 | 86.7 | 120-200 | 65-75 |
| HY5W-36 | 36 | 29.0 | 123.0 | 108 | 95.4 | 120-200 | 65-75 |
| HY5W-42 | 42 | 34.1 | 132.3 | 126 | 100.1 | 120-200 | 65-75 |
Used for 10kA Distribution Class 1:
| Type | Rated voltage | Maximun Continuous Operating Voltage |
1/4us Lightning Current impulse |
8/20us Lightning Current impulse |
30/60us Switching Current impulse |
2ms Rectangular current impulse withstand |
4/10us High current impulse withstand |
|---|---|---|---|---|---|---|---|
| kV | kV | kV(peak) | kV(peak) | kV(peak) | A | kA(crest) | |
| HY10W-3 | 3 | 2.55 | 11.3 | 9 | 8.9 | 250-400 | 100 |
| HY10W-6 | 6 | 5.1 | 22.6 | 18 | 16.8 | 250-400 | 100 |
| HY10W-9 | 9 | 7.65 | 33.7 | 27 | 23.8 | 250-400 | 100 |
| HY10W-10 | 10 | 8.4 | 36.0 | 30 | 23 | 250-400 | 100 |
| HY10W-11 | 11 | 9.4 | 40.0 | 33 | 30 | 250-400 | 100 |
| HY10W-12 | 12 | 10.2 | 42.2 | 36 | 27 | 250-400 | 100 |
| HY10W-15 | 15 | 12.7 | 51.0 | 45 | 38.5 | 250-400 | 100 |
| HY10W-18 | 18 | 15.3 | 61.5 | 54 | 46.2 | 250-400 | 100 |
| HY10W-21 | 21 | 17.0 | 71.8 | 63 | 54.2 | 250-400 | 100 |
| HY10W-24 | 24 | 19.5 | 82.0 | 72 | 62 | 250-400 | 100 |
| HY10W-27 | 27 | 22.0 | 92.0 | 81 | 69.8 | 250-400 | 100 |
| HY10W-30 | 30 | 24.4 | 102.0 | 90 | 79 | 250-400 | 100 |
| HY10W-33 | 33 | 27.5 | 112.0 | 99 | 86.7 | 250-400 | 100 |
| HY10W-36 | 36 | 29.0 | 123.0 | 108 | 95.4 | 250-400 | 100 |
| HY10W-42 | 42 | 34.1 | 133.0 | 126 | 100.1 | 250-400 | 100 |
Used for 10kA Distribution Class 2:
| Type | Rated voltage | Maximun Continuous Operating Voltage |
1/4us Lightning Current impulse |
8/20us Lightning Current impulse |
30/60us Switching Current impulse |
2ms Rectangular current impulse withstand |
4/10us High current impulse withstand |
|---|---|---|---|---|---|---|---|
| kV | kV | kV(peak) | kV(peak) | kV(peak) | A | kA(crest) | |
| HY10W-3 | 3 | 2.55 | 10 | 9 | 8 | 250-400 | 100 |
| HY10W-6 | 6 | 5.1 | 20 | 18 | 16 | 250-400 | 100 |
| HY10W-9 | 9 | 7.65 | 31 | 27 | 24 | 250-400 | 100 |
| HY10W-10 | 10 | 8.4 | 35 | 30 | 26 | 250-400 | 100 |
| HY10W-11 | 11 | 9.4 | 38 | 33 | 29 | 250-400 | 100 |
| HY10W-12 | 12 | 10.2 | 41 | 36 | 32 | 250-400 | 100 |
| HY10W-15 | 15 | 12.7 | 51 | 45 | 40 | 250-400 | 100 |
| HY10W-18 | 18 | 15.3 | 62 | 54 | 48 | 250-400 | 100 |
| HY10W-21 | 21 | 17.0 | 72 | 63 | 56 | 250-400 | 100 |
| HY10W-24 | 24 | 19.5 | 82 | 72 | 64 | 250-400 | 100 |
| HY10W-27 | 27 | 22.0 | 93 | 81 | 72 | 250-400 | 100 |
| HY10W-30 | 30 | 24.4 | 103 | 90 | 81 | 250-400 | 100 |
| HY10W-33 | 33 | 27.5 | 113 | 99 | 89 | 250-400 | 100 |
| HY10W-36 | 36 | 29.0 | 124 | 108 | 97 | 250-400 | 100 |
| HY10W-42 | 42 | 34.1 | 145 | 126 | 113 | 250-400 | 100 |
Used for 10kA Power station/Substation Class 2:
| Type | Rated voltage | Maximun Continuous Operating Voltage |
1/4us Lightning Current impulse |
8/20us Lightning Current impulse |
30/60us Switching Current impulse |
2ms Rectangular current impulse withstand |
4/10us High current impulse withstand |
|---|---|---|---|---|---|---|---|
| kV | kV | kV(peak) | kV(peak) | kV(peak) | A | kV(crest) | |
| HY10W-60 | 60 | 48 | 208 | 180 | 160 | 600-900 | 100 |
| HY10W-66 | 66 | 52.8 | 230 | 198 | 172 | 600-900 | 100 |
| HY10W-72 | 72 | 57.6 | 252 | 216 | 184 | 600-900 | 100 |
| HY10W-78 | 78 | 62.4 | 274 | 234 | 196 | 600-900 | 100 |
| HY10W-84 | 84 | 67.2 | 296 | 252 | 208 | 600-900 | 100 |
| HY10W-90 | 90 | 72 | 318 | 270 | 220 | 600-900 | 100 |
| HY10W-96 | 96 | 76.8 | 340 | 288 | 232 | 600-900 | 100 |
| HY10W-102 | 102 | 81.6 | 362 | 306 | 244 | 600-900 | 100 |
| HY10W-108 | 108 | 86.4 | 384 | 324 | 256 | 600-900 | 100 |
| HY10W-120 | 120 | 96 | 428 | 360 | 280 | 600-900 | 100 |
| HY10W-150 | 150 | 120 | 538 | 450 | 340 | 600-900 | 100 |
| HY10W-200 | 200 | 160 | 720 | 600 | 440 | 600-900 | 100 |
Polymeric Surge Arresters are widely used in various applications to protect electrical systems from transient overvoltages. Here are some common applications where these arresters play a crucial role:
A polymeric surge arrester is a device used to protect electrical power systems from over-voltage transients caused by lightning or switching operations. It consists of a polymer housing that encloses metal-oxide varistors (MOVs) which absorb and dissipate the energy from the surges.
A polymeric surge arrester works by clamping over-voltage surges and diverting the excess energy to the ground. The metal-oxide varistors (MOVs) inside the arrester have a highly non-linear resistance, which drops sharply during a surge, thus limiting the voltage that reaches the protected equipment.
Polymeric surge arresters offer several advantages over traditional porcelain arresters, including:
Polymeric surge arresters are used in various applications, including:
Polymeric surge arresters require minimal maintenance due to their robust design. However, periodic visual inspections for signs of physical damage, contamination, or weathering are recommended. It’s also advisable to check the electrical performance of the arrester periodically.
When selecting a polymeric surge arrester, consider the following factors:
Yes, polymeric surge arresters are designed for outdoor use and can withstand various environmental conditions, including UV radiation, temperature extremes, and pollution. They are often installed on poles, towers, and substations.
The lifespan of a polymeric surge arrester depends on various factors such as the number and intensity of surges it encounters, environmental conditions, and the quality of the materials used in its construction. Typically, they can last 20 years or more with proper application and minimal maintenance.
The performance of a polymeric surge arrester can be tested using various methods, including:
Yes, many components of polymeric surge arresters, such as the polymer housing and metal-oxide varistors, can be recycled. Proper disposal and recycling practices should be followed to ensure environmental sustainability.
