Bus supports 110 kW

Busbar supports of the ШО (ШОП) type for voltage 110 kV are intended for insulation and fastening of wires, rigid busbars and devices in switchgears of power stations and substations of alternating current with a frequency of 50 (60) Hz.

Busbar supports for voltage 110 kV structurally consist of 2 main elements: a column of insulators (or one insulator), which performs an insulating and lightning protection function, and a busbar holder, installed on top of the insulator and intended for fastening flexible and rigid busbars. Also, at the customer’s request, busbar supports can be equipped with a frame and a metal support post, on which an insulator with a busbar holder is fixed.

It is possible to manufacture 110 kV busbar supports in 4 designs:

ШО-110 (II*)-1 УХЛ1: busbar support for voltage 110 kV with a porcelain insulator with category II* (creepage distance 105 cm), design “1” (for fastening one wire), in climate version УХЛ1;

ШОП-110 (II*)-1 УХЛ1: the same as in ШО-110 (II*)-1 УХЛ1, but with a polymer insulator;

ШO-110 (II*)-2 УХЛ1: the same as in ШO-110 (II*)-1 УХЛ1, but in design “2” (for fastening two wires);

ШОП-110 (II*)-2 УХЛ1: the same as ШO-110 (II*)-2 УХЛ1, but with a polymer insulator.

In all versions, creepage distance categories and wire (pipe) diameter must be specified when ordering.

Main technical characteristics

№	Parameter name	Meaning
1	Rated voltage, kV	110
2	Highest operating voltage, kV	126
3	Rated voltage frequency, Hz	50
4	Test alternating short-term voltage, kV:
	— dry	230
	— rain	200
5	Test voltage of full lightning impulse, kV	450
6	Power frequency test voltage under dirty and humid conditions	110
7	Mechanical bending strength, kN, not less	4
8	Wind and ice-wind loads:
	— permissible wind speed without ice, m/s;	40
	— permissible wind speed during icy conditions with an ice wall thickness of 20 mm, m/s	15
9	Factor of mechanical strength in relation to the load from the tension of wires, taking into account wind and ice, not less	2,5
10	Seismic resistance, points on the MSK-64 scale, not less	8
11	Radio interference level, dB, no more	54
12	Leakage distance of external insulation, cm, not less, for degree of contamination:
	— I;	200
	— II;	250
	— II*;	280
	— III;	315
	— IV	390