U40B 40kN Porcelain Disc Insulator

U40B porcelain disc insulator has a mechanical load capacity of 40 kN and main features the following specifications:

Description

Type	XP-40	XP-40C	XP-70	XP-70C	XP-80	XP-100
IEC Class	U40B	U40C	U70BL	U70C	U80BL	U100BL
Coupling size	16	16C	16	16C	16	16
Diameter(mm)	190	190	255	255	255	255
Spacing (mm)	140	140	146	146	146	146
Creepage distance (mm)	200	200	320	320	320	320
Combined M&E strength (kN)	40	40	70	70	80	100
Impact strength (N.m)	5	5	6	6	7	7
Routine proof test load (kN)	20	20	35	35	40	50
Power frequency dry withstand voltage (kV)	55	55	70	70	70	70
Power frequency wet withstand voltage (kV)	30	30	40	40	40	40
Dry lightning impulse withstand voltage (kV)	75	75	100	100	100	100
Power frequency puncture voltage (kV)	90	90	110	110	110	110
Test voltage RMS to ground (kV)	7.5	7.5	10	10	10	10
Maximum RIV at 1000kHz (μv)	50	50	50	50	50	50
Net weight, approximate (kg)	2.8	2.9	4.7	4.8	5.0	5.3

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