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Details

210kN Disc Suspension Porcelain Insulators

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 Main Dimensions and Mechanical & Electrical Characteristics

Type

U210B/170

U210BP/170

U210BP/170M

U210BP/170D-1

U210BP/170D-2

U210BP/170T

Fig.No.

1

2

3

4

5

6

Nominal Diameter of Insulator  D    mm

300

330

420

300

350

340

Nominal Unit Spacing  H    mm

170

170

170

170

170

170

Nominal Creepage Distance   mm

400

550

380

450

525

545

Coupling Size   mm

20

20

20

20

20

20

Rated Electromechanical Failure Load   kN

210

210

210

210

210

210

Routine Tensile Load    kN

105

105

105

105

105

105

Wet Power Frequency Withstand Voltage   kV

42

55

45

45

50

50

Lightning Impulse Withstand Voltage   kV

115

135

120

120

135

130

Impulse Puncture Voltage  (Per Unit Value)

2.8, 2.85*

2.8, 2.85*

2.8, 2.85*

2.8, 2.85*

2.8, 2.85*

2.8, 2.85*

Radio Interference Test Voltage£¨7.5kV ,1MHz£© ¦ÌV

50

50

50

50

50

50

Corona Extinguished Voltage  kV

Pin18£¬Cap22

Pin18£¬Cap22

Pin18£¬Cap22

Pin18£¬Cap22

Pin18£¬Cap22

Pin18£¬Cap22

Power Frequency Arc Test

0.12s£¬20kA

0.12s£¬20kA

0.12s£¬20kA

0.12s£¬20kA

0.12s£¬20kA

0.12s£¬20kA

Reference Weight Per Unit    kg

11.0

14.7

11.1

11.5

13.5

14.2

Note: Asterisk * only applicable to 1000kV insulators.


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