Insulator, disc insulator,porcelain insulator

What is porcelain Disc insulator?

Porcelain disc insulator also can be called porcelain suspension insulator or suspension disc insulator. Porcelain disc insulator is the most popular used type of porcelain insulators. Since disc insualtor can be assembled one by one, which can constitute insualtor string suit for any voltage class, such as from 11kv to 1100kV. And for the fittings of disc insulator, normal used types are socket, ball, clevis and tongue. It can be constrituted by any both of these types.

ANSI standard disc Insulator types:

ANSI 52-1, ANSI 52-2, ANSI 52-3, ANSI 52-4, ANSI 52-5, ANSI 52-6, ANSI 52-8, ANSI 52-9A

IEC standard disc Insulator types:

U70BS, U70BL, U70C, U100BL, U120B, U160BS, U300B, U530B, XHP-70, XHP-120

Porcelain Disc Insulator Picture:

ANSI standard Porcelain Disc Insulator types:

Type No.	ANSI 52-1	ANSI 52-2	ANSI 52-3	ANSI 52-4	ANSI 52-5	ANSI 52-6	ANSI 52-8	ANSI 52-9A
Section length – H:mm	140	146	146	146	146	146	146	159
Diameter – D:mm	165	190.5	254	254	254	254	280	114
Creepage distance – mm	178	210	292	292	292	292	280	171
Dry flashover voltage – kV	60	65	80	80	80	80	80	60
Wet flashover voltage – kV	30	35	50	50	50	50	50	30
Critical Impulse flashover Pos. – kV	100	115	125	125	125	125	125	110
Critical Impulse flashover Neg. – kV	100	115	125	130	130	130	130	90
Low frequency puncture voltage – kV	80	90	110	110	110	110	110	80
Rated E&M failing load – kN	44	70	70	70	111	111	160	44
Impact strength – N-m	5	5.5	6	6	7	7	10	5
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

IEC standard Porcelain Disc Insulator types:

Type No.	U70BS	U70BL	U70C	U100BL	U120B	U160BS	XHP-70	XHP-120
Section length – H:mm	127	146	146	146	146	146	146	146
Diameter – D:mm	255	255	255	255	255	280	255	255
Creepage distance – mm	295	295	295	295	295	320	432	432
Powe frequency wet withstand voltage – kV	40	40	40	40	40	40	42	42
Lightning Impulse withstand voltage – kV	100	100	100	100	100	100	120	120
Power frequency puncture voltage – kV	110	110	110	110	110	110	120	120
Rated E&M failing load – kN	70	70	70	100	120	150	70	120
Impact strength – N-m	6	6	6	7	7	10	5.6	7
Test voltage to ground – kV	10	10	10	10	10	10	10	10
Max RIV at 1000kHz – µV	50	50	50	50	50	50	50	50