Porcelain support insulators for outdoor

outdoo-post-ceramic-insulator-internal-insert

Porcelain outdoor support insulators – Catalog sheet

Ceramic / porcelain material

					Ceramic group	Ceramic group	Ceramic group	Ceramic group
				Sub-Group	C-110	C-120	C-130	C-221
					Silicious Porcelain	Aluminous porcelain Standard strength	Aluminous porcelain High strength	Steatite low/loss angle
Properties	Properties	Properties	Symbols	Units	AL2O3 <30%	AL2O3 30-50%	AL2O3 >50%
Apparent prosity (open)	max.	max.	Pa	Volume %	0.0	0.0	0.0	0.0
Bulk density	min.	min.	δa	g/cm3	2,2	2,3	2,5	2,7
Flexural strength	min.	unglazed	Rf	N/mm2	50	90	140	140
	min.	glazed	Rf	N/mm2	60	110	160	-
Modulus of elasticity		min	E	GPa	60	70	100	100
Mean coefficient linear expansion			α 20-100°C	10-6K-1	3-6	3-6	4-7	6-8
			α 20-300°C	10-6K-1	3-6	3-6	5-7	7-9
			α 20-600°C	10-6K-1	4-7	5-7	5-7	8-9
Specific heat capacity		20°-100°C	cp	J/kgK	750÷900	750÷900	750÷900	790÷920
Thermal conductivity		20°-100°C	λ	W/mK	1÷2,5	1,2÷2,6	1,5÷4,0	2,3÷2,8
Resistance to thermal shock		min.	Δt	K	150	150	150	100
Electric strength		min.	Ed	kV/mm	20	20	20	20
Withstand voltage		min.	U	kV	30	30	30	30
Relative permittivity		48÷62 Hz	εr		6÷7	6÷7	6÷7,5	6
Dissipational 20°C	max.	48÷62 Hz	tanδ	10-3	25	25	30	1,5
	max.	1 kHz	tanδ	10-3	-	-	-	-
	max.	1 MHz	tanδ	10-3	12	12	15	1,2
Volume resistivity in terms of temperature	min.	20°C	ρv	Ωcm	1013	1013	1013	1012
	min.	200°C	ρv	Ωcm	108	108	108	1011
	min.	600°C	ρv	Ωcm	104	104	104	107
Temperature corresponding to a volume resistivity	min.	100 MΩcm	tK100	°C	200	200	200	500
	min.	1 MΩcm	tK1	°C	350	350	350	800

For post insulators, hot-dip galvanized cast iron flanges assembled or with :
Sulphur cement = excellent mechanical performances and max use temperature 90°C - Reduced assembly time
Portland cement = max use temperature 200°C - Drying time in mould is longer

Outdoor porcelain insulator for medium voltage

Outdoor post insulator of ceramic material.

TYPE	Art.	1	2	3	H ± 1	Cr	P0	ØD	Ød	f	g	Weight
		kV	kV	kV	mm	mm	N	mm	mm			kg
H 4- 60 (*)	1301	7,2	20	60	95	230	4000	125	60	M16	M16	2,2
H 8- 60	1311	7,2	20	60	95	230	8000	152	60	M16	M16	2,7
H16- 60	1316	7,2	20	60	95	230	16000	185	115	M20	M20	4,2
H 4- 75	1302	12	28	75	130	290	4000	125	60	M16	M16	2,9
H 8- 75	1312	12	28	75	130	290	8000	152	80	M20	M20	3,9
H16- 75	1317	12	28	75	130	290	16000	177	115	M20	M20	6,0
H 4- 95 (*)	1303	17,5	38	95	175	380	4000	127	60	M16	M16	3,7
H 8- 95	1313	17,5	38	95	175	380	8000	182	80	M20	M20	4,4
H16- 95	1318	17,5	38	95	175	380	16000	182	115	M20	M20	8,4
H 4-125 (*)	1304	24	50	125	210	460	4000	127	60	M16	M16	4,5
H 8-125 (*)	1314	24	50	125	210	440	8000	162	95	M20	M20	8,8
H16-125	1319	24	50	125	210	440	16000	192	115	M24	M24	10,7
H 4-170	1305	36	70	170	300	680	4000	150	80	M16	M16	11,5
H 8-170	1315	36	70	170	300	640	8000	177	115	M24	M24	13,7
H16-170	1320	36	70	170	300	640	16000	200	130	M24	M24	20,7

1 - Rated Highest voltage for equipment (Um)
2 - Rated Power Frequency Withstand Voltage, wet (50 Hz, 1 min)
3 - Rated Lightning impulse withstand (1.2/50 μs)
Cr - Creepage distance
P0 - Flexion resistance

Monday	8am > 4:30pm
Tuesday	8am > 4:30pm
Wendsday	8am > 4:30pm
Thursday	8am > 4:30pm
Friday	8am > 12am
Saturday	Closed
Sunday	Closed