20
Appendix A
Supplementary description of insulating rod parameters
The insulating telescopic pole (material) is selected from the
moisture-proof insulation pipe produced by the military industry. It
conforms to the IEC / 1C78 standard and has the characteristics of
moisture resistance, high pressure resistance, impact resistance, and
bending resistance. The material characteristics are shown in the table
below.
。
Table 1 Mechanical and electrical characteristics of insulated rods
project
unit
Index
Martin-type heat resistance
℃
>200
Impact resistance (longitudinal)
MPa/cm >147
Bending resistance
(longitudinal)(longitudinalresistance (longitudinal)
MPa
>343
Surface resistance coefficient
Ω
>10x10
1
1
Volume resistance coefficient
Ω/cm
>10x10
3
1
Table II withstand voltage test parameters of insulating rod
Voltage
(kV)
Length(m)
Power frequency
withstand voltage (kV)
Time
(min) Result
Standard
Test value
6-10
1.5
44
44
1
～
5 qualified
35
2.4
80
80
1
～
5 qualified
66~110
2.8
254
254
1
～
5 qualified
220
3.0
440
440
1
～
5 qualified
The product complies with the national GB13398-92, GB311.1-311.6-8,
3DL408-91 standards and the newly issued national power industry
standard "General Technical Conditions for Portable Nuclear Phase
Apparatus for Live Working 1kV ~ 110kV DL / T971-2005"
。
