MV Surge Arresters
2SS15N – RP
Metal oxide medium voltage surge arrester with silicone rubber housing. IEC Class 1. Widest voltage range in the series: Ur 3.75–55 kV. In 10 kA, IP 67, 23 stages.
The 2SS15N-RP is a metal oxide surge arrester that provides protection against overvoltages and transient events in medium voltage networks up to 52 kV.
The varistor block is directly molded with silicone rubber.
The product is certified as Class 1 according to IEC 60099-4:2004 and IEC 60099-5 standards.
It is produced in RP housing form — a skirted silicone housing with a Ø140 mm base.
This is the form of the 2SS15N family that reaches the highest voltage rating: Ur 55 kV / Uc 44 kV. The other three forms (R, RO, NO) stop at 50.6 kV.
HIGHLIGHTED FEATURES
- IEC Class 1 arrester
- Widest voltage range in the family — up to 55 kV
- Varistor directly molded with silicone rubber
- IP 67 protection class
- UV and chemical resistant, self-cleaning silicone surface
- −60 °C … +85 °C operating range
- High creepage distance (343–1234 mm) — suitable for polluted environments
- Residual voltage value at seven different impulse currents
- 100% final inspection in the manufacturer's laboratory
- Each arrester is marked with an indelible measurement number
GENERAL TECHNICAL DATA
| Parameter | Value |
|---|---|
| Arrester type | 2SS15N |
| Commercial designation (housing form) | RP |
| IEC class | 1 |
| Standard | IEC 60099-4:2004, IEC 60099-5 |
| Continuous operating voltage (Uc) | 3 – 44 kV |
| Rated voltage (Ur) | 3.75 – 55 kV |
| Nominal discharge current (In, 8/20 µs) | 10 kA |
| High impulse current (4/10 µs) | 100 kA |
| Short-circuit current (Isc) | 20 kA |
| Long-duration current (I2ms) | 250 A |
| Energy absorption capacity (long-duration, W2ms) | 2.8 kJ/kV·Uc |
| Energy absorption capacity (impulse, W4/10) | 4.8 kJ/kV·Uc |
| Cantilever strength (24 kV) | 300 Nm |
| Cantilever strength (36 kV) | 250 Nm |
| Vertical load (Fv) | 625 N |
| Terminal tightening torque (Ur = 45 kV) | 80 Nm |
| Protection class | IP 67 |
| Ambient temperature | −60 °C … +85 °C |
| Body material | Silicone rubber |
| Body color | Grey |
| Connection thread | M12 × 27 mm |
| Upper terminal | M12 × 25 |
| Bottom terminal | M12 × 20 |
| Base diameter | Ø140 mm |
VOLTAGE LEVELS — ELECTRICAL
| Ur [kV] | Uc [kV] | 1/20 µs 5 kA | 1/20 µs 10 kA | 8/20 µs 5 kA | 8/20 µs 10 kA | 30/60 µs 100 A | 30/60 µs 125 A | 30/60 µs 500 A | Upeak 1.2/50 µs | Urms 50 Hz 1 min |
|---|---|---|---|---|---|---|---|---|---|---|
| 3,75 | 3 | 8,55 | 9,65 | 7,18 | 8,78 | 6,20 | 7,35 | 7,85 | 90 | 35 |
| 5,00 | 4 | 12,80 | 14,20 | 11,25 | 12,92 | 8,93 | 9,63 | 10,16 | 90 | 35 |
| 7,50 | 6 | 21,35 | 23,85 | 17,95 | 21,70 | 15,12 | 16,98 | 18,01 | 90 | 35 |
| 10,00 | 8 | 25,60 | 28,40 | 26,12 | 25,84 | 17,85 | 19,26 | 20,32 | 90 | 35 |
| 12,50 | 10 | 34,15 | 38,05 | 29,00 | 34,62 | 24,05 | 26,61 | 28,17 | 105 | 40 |
| 15,00 | 12 | 38,40 | 42,60 | 33,15 | 38,76 | 26,78 | 28,89 | 30,48 | 105 | 40 |
| 17,50 | 14 | 46,95 | 52,25 | 39,98 | 47,54 | 32,97 | 36,24 | 38,33 | 120 | 45 |
| 20,00 | 16 | 51,20 | 56,80 | 44,10 | 51,68 | 35,70 | 38,52 | 40,64 | 120 | 45 |
| 22,50 | 18 | 59,75 | 66,45 | 51,26 | 60,46 | 41,90 | 45,87 | 48,49 | 130 | 50 |
| 25,00 | 20 | 64,00 | 71,00 | 55,45 | 64,60 | 44,63 | 48,15 | 50,80 | 130 | 50 |
| 26,25 | 21 | 67,55 | 77,10 | 58,93 | 67,95 | 48,09 | 52,15 | 54,55 | 130 | 50 |
| 27,50 | 22 | 72,55 | 80,65 | 63,00 | 73,38 | 50,82 | 55,50 | 58,65 | 140 | 65 |
| 30,00 | 24 | 76,80 | 85,20 | 66,15 | 75,98 | 53,55 | 57,78 | 60,96 | 150 | 75 |
| 32,50 | 26 | 85,35 | 94,85 | 74,39 | 84,76 | 59,75 | 65,13 | 68,81 | 150 | 75 |
| 35,00 | 28 | 89,60 | 99,40 | 77,20 | 88,21 | 62,48 | 67,41 | 71,12 | 150 | 75 |
| 37,50 | 30 | 98,15 | 109,05 | 84,90 | 96,99 | 68,67 | 74,46 | 78,97 | 160 | 80 |
| 40,00 | 32 | 102,40 | 113,60 | 88,00 | 101,15 | 71,40 | 77,04 | 81,28 | 160 | 80 |
| 42,50 | 34 | 110,95 | 123,25 | 96,05 | 109,93 | 77,60 | 84,39 | 89,13 | 170 | 85 |
| 45,00 | 36 | 115,20 | 127,80 | 99,10 | 114,10 | 80,33 | 86,67 | 91,44 | 170 | 85 |
| 47,50 | 38 | 120,35 | 130,33 | 106,25 | 123,66 | 86,52 | 90,85 | 95,65 | 170 | 85 |
| 50,00 | 40 | 124,87 | 135,63 | 114,33 | 129,78 | 89,25 | 95,50 | 100,75 | 180 | 90 |
| 52,50 | 42 | 130,50 | 138,75 | 120,63 | 137,85 | 95,45 | 100,43 | 105,47 | 180 | 90 |
| 55,00 | 44 | 136,75 | 143,25 | 127,55 | 142,68 | 98,18 | 103,58 | 108,35 | 180 | 90 |
Ures values are in kV.
VOLTAGE LEVELS — MECHANICAL
| Ur [kV] | AD [mm] | CD [mm] | A [mm] | B [mm] | H [mm] | N |
|---|---|---|---|---|---|---|
| 3,75 | 154 | 343 | 60 | 90 | 136 | 3 |
| 5,00 | 154 | 343 | 80 | 100 | 136 | 3 |
| 7,50 | 154 | 343 | 100 | 120 | 136 | 3 |
| 10,00 | 154 | 343 | 120 | 140 | 136 | 3 |
| 12,50 | 186 | 453 | 140 | 160 | 168 | 4 |
| 15,00 | 186 | 453 | 160 | 180 | 168 | 4 |
| 17,50 | 218 | 563 | 180 | 200 | 200 | 5 |
| 20,00 | 218 | 563 | 200 | 220 | 200 | 5 |
| 22,50 | 250 | 674 | 220 | 240 | 232 | 6 |
| 25,00 | 250 | 674 | 240 | 260 | 232 | 6 |
| 26,25 | 250 | 674 | 260 | 280 | 232 | 6 |
| 27,50 | 282 | 784 | 270 | 300 | 263 | 7 |
| 30,00 | 314 | 894 | 300 | 320 | 295 | 8 |
| 32,50 | 314 | 894 | 320 | 340 | 295 | 8 |
| 35,00 | 314 | 894 | 340 | 360 | 295 | 8 |
| 37,50 | 345 | 1004 | 360 | 380 | 327 | 9 |
| 40,00 | 345 | 1004 | 380 | 400 | 327 | 9 |
| 42,50 | 377 | 1114 | 400 | 420 | 359 | 10 |
| 45,00 | 377 | 1114 | 420 | 440 | 359 | 10 |
| 47,50 | 377 | 1114 | 440 | 460 | 359 | 10 |
| 50,00 | 409 | 1234 | 450 | 470 | 391 | 11 |
| 52,50 | 409 | 1234 | 460 | 480 | 391 | 11 |
| 55,00 | 409 | 1234 | 470 | 490 | 391 | 11 |
- Indoor and outdoor installation
- Protection of electrical equipment
- Protection of compensation devices
- MV distribution networks (up to 52 kV)
- Networks above 36 kV — other models in the family stop at 50.6 kV
- Substations and distribution panels
- Railways
- Mines
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