Standard Suspension Glass Insulator-U70B

Short Description:

Nominal diameter D (mm): 255, Structure height H (mm): 170, Nominal creepage distance L (mm): 320, Connection marking (mm): 16, Rated mechanical breakdown load (kN): 70, Individual tensile load test (kN): 35, Power frequency dry withstand voltage (kV): 70, Power frequency wet withstand voltage (kV): 40, Lightning impulse withstand voltage (kV): 100,

Nominal Diameter of Insulator(mm):: 255
Structural Height H(mm): 170
Nominal Creepage Distance(mm): 320
Rated Mechanical Breakdown Load(kN): 70
Connection Marking(mm): 16

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Summary of Model Parameter Table：

IEC	U40B	U70B	U100B	U120B	U160B	U210B	U240B	U300B
insulator Model	LXP-40	LXP-70	LXP-100	LXP-120	LXP-160	LXP-210	LXP-240	LXP-300
Nominal Diameter D(mm)	175	255	255	255	280	280	280	320
Structure Height H(mm)	110	170	170	195	205	170	170	195
Nominal Creepage Distance L(mm)	190	320	320	320	400	460	400	485
Connection Marking(mm)	11	16	16	16	20	20	24	24
Rated Mechanical Breakdown Load(kN)	40	70	100	120	160	210	240	300
Individual Tensile Load Test (kN)	32	35	50	60	80	105	120	150
Power Frequency Dry Withstand Voltage(kV)	85	70	70	70	75	85	75	85
Power Frequency Wet Withstand Voltage(kV)	45	40	40	40	45	45	45	50
Lightning Impulse Withstand Voltage(kV)	125	100	100	100	110	125	110	130
Impulse Overvoltage Breakdown Withstand Voltage(p.u.)	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Minimum Operating Frequency Breakdown Withstand Voltage(kV)	130	130	130	130	130	130	130	130
Radio Interference 10kV 1MHz (μV)	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50
Visible Electric Corona Voltage Foot/Crown (kV)	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22
Power Frequency Arc Test	12s/20kA	12s/20kA	12s/20kA	12s/20kA	12s/20kA	12s/20kA	12s/20kA	12s/20kA
Single Piece Weight(kg)	1.7	3.6	4	4.2	6.5	6.9	6.9	10.6