Porcelain disc suspension insulator is one main kind of high voltage insulators, used on transmission and distribution power lines, used for 10kV to 1000kV. Porcelain disc suspension insulator can be divided into normal insulator and anti-fog insulator used in light and heavy contamination areas. Porcelain disc suspension insulator is designed in disc shapes and commonly used in suspension strings. The voltage depends on the number of disc suspension insulator.

ANSI series suspension type Insulator
Suspension type insulator: Suspension type insulator is a common used type of insulator for transmission and distribution lines, it is made by wet process method. Most of suspension insulator strings is popular insulator and gathered two or more suspension type insulators to suit for different voltage class.

IEC series disc Insulators
1. IEC normal disc insulators: porcelain disc insulators are designed in disc shape, the insulator end fittings are main part of disc insulators. The types of porcelain disc insulators fittings have ball & socket, clevis & tongue. We can supply porcelain disc insulators up to 530kN, only several company can reach that.

2. IEC anti-pollution porcelains suspension insulator
Porcelain suspension insulator can be divided into normal insulator and anti-pollution (fog) insulators which used in any pollution level areas. Anti-pollution (fog) insulators can be divided into bell type insulator, double shed type insulator, and triple shed type insulator and Aerodynamic type insulator.

If you want to know more standard suspension insulator, you can click or download the porcelain disc suspension insulator pdf.

ANSI series suspension type Insulator main technical data:

ANSI Type
Fig NO.					1	1	3	4	3	4	3	5
Main dimension(mm)				D	165	190.5	254	254	254	254	280	114
				H	140	146	146	146	146	146	146	159
Leakage distance-mm					178	210	292	292	292	292	280	171
Power frequency puncture voltage-kV					80	90	110	110	110	110	110	80
Flashover voltage-kV	Power freq.		Dry		60	65	80	80	80	80	80	60
			Wet		30	35	50	50	50	50	50	30
	Critical impulse 1.5×40us wave		Pos.		100	115	125	125	125	125	125	110
			Neg.		100	115	130	130	130	130	130	90
Radio influence voltage		Test voltage to ground-KV			7.5	7.5	10	10	10	10	10	7.5
		Max. RIV at 1000kHz-μv			50	50	50	50	50	50	50	50
Rated E & M failing load-KN					44	70	70	111	111	111	160	44
Tension proof load-KN					22	35	35	55.5	55.5	55.5	80	22
Impact strength-N.M					5	5.5	6	7	7	7	10	5

IEC series disc Insulators
1. IEC normal disc insulators main technical parameters:

IEC Type
Fig NO.		2	2	1	2	2	2	2	2	2
Unit spacing H(mm)		127	146	146	146	146	146	170	195	240
Dia. D(mm)		255	255	255	255	255	280	300	320	380
Leakage distance-mm		295	295	295	295	295	320	370	370	600
Rated E & M failing load-KN		70	70	70	100	120	160	210	300	530
Routine tension load(KN)		35	35	35	50	60	80	105	150	265
Impact failing load (N.M)		6	6	6	7	7	10	10	10	10
Wet power freq. Withstand voltage (kV)		40	40	40	40	40	40	42	45	55
Lightning impulse withstand voltage (kV)		100	100	100	100	100	100	110	110	140
Radio influence voltage	Test voltage to ground-KV	10	10	10	10	10	10	10	10	10
	Max. RIV at 1000kHz-μv	50	50	50	50	50	50	50	50	50
Power freq. Puncture voltage (kV)		110	110	110	110	110	110	120	120	140

2. IEC anti-pollution porcelains suspension insulator main techncial parameters:
Aerodynamic type insulator is designed in accordance with IEC insulator standard, the main technical parameters:

Type
Rated electro-mechanical failing load, KN			70	80	100	120	160
Tension proof load, KN			35	40	50	60	80
Porcelain disc diameter, mm			350	360	360	360	360
Unit spacing, H.Mm			140/146	140/146	146	146	160
Creepage distance, mm			300	330	300	300	300
Coupling size			16	16	16	15	20
Withstand voltage	Lightning impulse, kV		100	100	105	105	105
	Wet 1min power-freq, kV		40	40	40	40	40
Power frequency puncture voltage, kV			120	120	120	120	120
Radio-influence voltage		Test voltage to ground, kV	10	10	10	10	10
		Max. RIV at 1000kHz, μV	50	50	50	50	50
Net weight, approx., kg			6	6.2	7.1	7.2	8.1