for industrial power engineering, industry, steelworks and mines.

Insulators type JO and JOR


Casting resin indoor insulator type JO aplication in switching stations, switch boards and others electrical equipments of AC for maximal rated voltege 12; 17,5; 24 kv; temperatures from -25°C to +90°C; humidity up to 90% and up to 2000m.

Insulator type JOR consists essentially of a capacitive voltage divider. It is an element (detection) of voltage indication systems cooperativly with indicator. Insulator JOR can be use as to cooperative with look relay to limit a risk hazard persons neither during normal nor during distarbed operation.

Type marking structure.

JO(R) Po-Up

(according IEC 60273)

  • JO – post insulator
  • JOR – capacitive post insulator
  • Po – failing load bending in Kn – 8 kN
  • Up – dry lighting impulse withstand voltage in kV – accordingly 75; 95 and 125

Example: JOR 8-95 – capacitive insulator, failing load bending 8 kN; dry lighting impulse withstand 95 kV

Basic technical data in Table

Casting resin basic dates.

  • Breakdown strenght: >18 kV/mm
  • Comperative Tracking Index CTI > 600
  • Thermal class – 155°C

Recommended torque (screw class 8.8).

  • M12 – 60 Nm
  • M16 – 145 Nm
  • M20 – 290 Nm

CNC machining

Interior design articles

Insulator production