1. Alternating-current system disk-shaped suspending insulator (GB & IEC) standard insulator:

Insulator model
Diameter D (mm)	175	255	255	255	280	280	280	320	360	380	400
Structure H (mm)	110	146	146	146	155	170	170	195	205	240	280
Creepage distance (mm)	200	320	320	320	400	400	400	485	550	620	730
Socket coupling (mm)	11	16	16	16	20	20	24	24	28	32	36
Mechanical failing load (kN)	40	70	100	120	160	210	240	300	420	550	760
Mechanical routine test (kN)	20	35	50	60	80	105	120	150	210	275	380
Dry power frequency withstand voltage (kV)	50	70	70	70	75	75	75	85	90	95	100
Wet power frequency withstand voltage (kV)>	32	40	40	40	45	45	45	50	55	55	60
Dry lightning impulse withstand voltage (kV)>	70	100	100	100	110	110	110	130	140	145	150
Impulse puncture voltage (p. u.)	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Min power frequency puncture voltage (kV)	130	130	130	130	130	130	130	130	130	130	130
Radio influence voltage 10KV: 1MHz (μV)	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50
Electric iron visual test	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22
Net weight per unit (kg)	1.73	4.0	4.0	4.0	7.0	7.0	7.5	10.5	15.0	18.6	26.3

2. Alternating-current system disk-shaped suspending insulator (GB & IEC) Aerodynamic Type:

Insulator model				U160BP	U210BP	U240BP	U300BP	U300BP2
Diameter D (mm)	380	380	380	420	420	420	420	455
Structure H (mm)	146	146	146	155	170	170	195	195
Creepage distance (mm)	365	365	365	380	380	380	380	450
Socket coupling (mm)	16	16	16	20	20	24	24	24
Mechanical failing load (kN)	70	100	120	160	210	240	300	300
Mechanical routine test (kN)	35	50	60	80	105	120	150	150
Dry power frequency withstand voltage (kV)	55	55	55	60	60	60	60	65
Wet power frequency withstand voltage (kV)	45	45	45	50	50	50	50	55
Dry lightning impulse withstand voltage(kV)	90	90	90	95	95	95	95	100
Impulse puncture voltage (p. u.)	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Min power frequency puncture voltage (kV)	130	130	130	130	130	130	130	130
Radio influence voltage 10KV: 1MHz (μV)	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50
Electric iron visual test	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22

3. Alternating-current system disk-shaped suspending insulator (GB & IEC) Anti-pollution Type 1:

Insulator model	U70BP	U100BP	U120BP	U160BP	U210BP	U240BP	U300BP	U420BP	U550BP
Diameter D (mm)	280	280	280	320	330	330	390	380	380
Structure H (mm)	146	146	146	155	170	170	195	205	240
Creepage distance (mm)	450	450	450	550	550	550	635	620	720
Socket coupling (mm)	16	16	16	20	20	24	24	28	32
Mechanical failing load (kN)	70	100	120	160	210	240	300	420	550
Mechanical routine test (kN)	35	50	60	80	105	120	150	210	275
Dry power frequency withstand voltage (kV)	85	85	85	90	90	90	95	90	95
Wet power frequency withstand voltage (kV)	50	50	50	55	55	55	60	55	60
Dry lightning impulse withstand voltage (kV)	125	125	125	140	140	140	150	140	145
Impulse puncture voltage (p. u.)	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Min power frequency puncture voltage (kV)	130	130	130	130	130	130	130	130	130
Radio influence voltage 10KV: 1MHz (μV)	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50	≤50
Electric iron visual test	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22	18/22

4. Alternating-current system disk-shaped suspending insulator (GB & IEC) Anti-pollution Type 2:

Insulator model	U70BP2	U100BP2	U120BP2	U160BP2	U210BP2	U240BP2	U300BP2
Diameter D (mm)	255	255	255	280	280	280	320
Structure H (mm)	146	146	146	155	170	170	195
Creepage distance (mm)	400	400	400	450	450	450	610
Socket coupling (mm)	16	16	16	20	20	24	24
Mechanical failing load (kN)	70	100	120	160	210	240	300
Mechanical routine test (kN)	35	50	60	80	105	120	150
Dry power frequency withstand voltage (kV)	80	80	80	85	85	85	90
Wet power frequency withstand voltage (kV)	45	45	45	50	50	50	55
Dry lightning impulse withstand voltage (kV)	110	110	110	125	125	125	140
Impulse puncture voltage (p. u.)	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Min power frequency puncture voltage (kV)	130	130	130	130	130	130	130
Radio influence voltage 10KV: 1MHz (μV)	≤50	≤50	≤50	≤50	≤50	≤50	≤50
Electric iron visual test	18/22	18/22	18/22	18/22	18/22	18/22	18/22
Net weight per unit (kg)	5.0	5.0	5.0	7.0	8.5	9.0	13.0

5. Alternating-current system disk-shaped suspending insulator (GB & IEC) Anti-pollution Type 3:

Insulator model	U70BP3	U100BP3	U120BP3	U160BP3	U210BP3	U240BP3	U300BP3
Diameter D (mm)	320	320	320	330	330	330	390
Structure H (mm)	146	146	146	155	170	170	195
Creepage distance (mm)	550	550	550	615	615	615	690
Socket coupling (mm)	16	16	16	20	20	24	24
Mechanical failing load (kN)	70	100	120	160	210	240	300
Mechanical routine test (kN)	35	50	60	80	105	120	150
Dry power frequency withstand voltage (kV)	90	90	90	90	90	90	100
Wet power frequency withstand voltage (kV)	55	55	55	55	55	55	60
Dry lightning impulse withstand voltage (kV)	140	140	140	140	140	140	155
Impulse puncture voltage (p. u.)	2.8	2.8	2.8	2.8	2.8	2.8	2.8
Min power frequency puncture voltage (kV)	130	130	130	130	130	130	130
Radio influence voltage 10KV: 1MHz (μV)	≤50	≤50	≤50	≤50	≤50	≤50	≤50
Electric iron visual test	18/22	18/22	18/22	18/22	18/22	18/22	18/22
Net weight per unit (kg)	7.5	7.5	7.5	10.0	10.5	11.0	15.5