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     INTRODUCTION
    Silicone Rubber Insulated Zinc Oxide Over-voltage Protectors for Outer Sheath of Single Core     Power Cables Rated Voltage from 10kV up to 500kV
 
   Features
       Outline of Size

 ■     Effectively restrain cable system transient over-voltage level
 ■     Prevent cable outer sheath from over-voltage breakdown
 ■     Superior water penetration protection from one-piece molding
 ■     Elastic silicone rubber construction for lightness with longevity
    
  Applications

   Apply to single core power cable lines rated voltage from 10kV up to 500kV for protecting HV/UHV the outer sheath of the cables from any surge over-voltage breakdown.
 
  Silicone Rubber Performance
Hardness
Shore A
Tear Strength
(kN/m)
Surface Contact Angle
( °)
Breakdown
Field
(MV/m)
Volume
Resistivity
(Ω·cm)
Anti-flaming
Performance
(Class)
Tracking
Resistance
(Class)
52±2
≥25
106
25
8.6×1015
FH1
1A4.5
   Essential Technical Data
Types
Applications
Rated Voltage
U
(kV)
Continuous Operating
Voltage
Uc
(kV)
8/20μs
Discharge
Current
Id
(kA)
DC Reference
Voltage
U1mA
(kV)
DC Leakage
Current
at 0.75U1mA
IL
( μA)
Residual Voltage
at Id
Ur
(kV)
2000μs
Rectangular
Withstand
Current
(A)
Partial
Discharge (1.05Uc,
pC)
4/10μs
Withstand Current
(kA)
BHQ-7/200
Metallic Sheath Grounding of
35kV Power
Cable Lines
2.8
2.24
5
≥4.0
≤30
≤7
200
≤14
65
BHQ-7/400
Metallic Sheath Grounding of
110-220kV Power Cable lines
2.8
2.24
10
≥4.0
≤30
≤7
400
≤14
100
BHQ-10/400
Metallic Sheath Grounding of
220-500kV Power Cable lines
3.6
2.8
10
≥5.8
≤30
≤10
400
≤14
100
BHQ-7/600
Metallic Sheath Grounding of
220-500kV Power Cable lines
4.0
3.2
10
≥5.8
≤30
≤7
600
≤14
100

 
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