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Outdoor support insulators

ОСК 8-220
ОСК 6-220
ОСК 10-150
ОСК 8-150
ОСК 12,5-110
ОСК 10-110
ОСК 8-110
ОСК 6-110
ОСК 16-35
ОСК 12,5-35
ОСК 10-35
ОСК 8-35
ОСК 3-35
ОСК 16-20-А-4
ОСК 20-20-4
OCK 16-20-4
OCK 20-20-A-2
ОСК 10-20-А-2
ОСК 4-20-А-2
OCK 8-10-1
OCK 20-10-4
OCK 20-10-A (B,V)-4
OCK 6-10
OCK 4-10
OCK 3-10-2
OCK 16-3-4

OCK 20-10-A (B,V)-4

Polymeric support insulators of the OCK 20-10-A (B,V)-4 type are designed for insulating and securing live parts in electrical apparatus and distribution devices of power plants and substations operating with alternating current at voltages of 10 kV and frequencies up to 100 Hz. They ensure reliable insulation in ambient temperatures ranging from -60°C to +50°C.

Technical Specifications:

  • Rated bending strength: 20 kN
  • Rated torsional strength:
    • OCK 20-10-A-4: 1.0 kN·m
    • OCK 20-10-B-4 and OCK 20-10-V-4: 2.0 kN·m
  • Structural height (H):
    • OCK 20-10-A-4: 210 mm
    • OCK 20-10-B-4: 280 mm
    • OCK 20-10-V-4: 285 mm
  • Insulation height (L):
    • OCK 20-10-A-4: 160 mm
    • OCK 20-10-B-4 and OCK 20-10-V-4: 208 mm
  • Creepage distance:
    • OCK 20-10-A-4: at least 460 mm
    • OCK 20-10-B-4 and OCK 20-10-V-4: at least 650 mm
  • Withstand voltage:
    • Lightning impulse:
      • OCK 20-10-A-4: 85 kV
      • OCK 20-10-B-4 and OCK 20-10-V-4: 130 kV
    • 50 Hz in dry conditions:
      • OCK 20-10-A-4: 45 kV
      • OCK 20-10-B-4 and OCK 20-10-V-4: 80 kV
    • 50 Hz under rain:
      • OCK 20-10-A-4: 30 kV
      • OCK 20-10-B-4 and OCK 20-10-V-4: 50 kV
    • 50 Hz flashover voltage in polluted and wet conditions: at least 13 kV
  • Rated specific surface conductivity of the pollution layer: 30 µS
  • Permissible pollution degree (PD) according to GOST 9920: IV

The insulators comply with the climatic version and placement category UHL1 according to GOST 15150, are manufactured according to TU 3494-024-82442590-2015, and meet the requirements of GOST R 52082.