Indoor porcelain support insulators

Indoor post insulator of ceramic material.

Porcelain support insulators for indoor – 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

Indoor porcelain insulator for medium voltage

Indoor post insulator of ceramic material.

TYPE	Art.	1	2	3	H ± 1	P0	P50	ØD	Ød	Ød1	f	g	Weight
		kV	kV	kV	mm	N	N	mm	mm				kg
J 2- 60	1201	7,2	28	60	95	2000	1300	60	35	35	M12	M12	0,700
J 4- 60	1202		28	60	95	4000	2600	75	50	60	M12	M12	1,100
J 8- 60	1203		28	60	95	8000	5200	85	50	60	M16	M16	1,570
J 2- 75	1204	12	38	75	130	2000	1450	60	35	45	M12	M12	0,900
J 4- 75	1205		38	75	130	4000	2900	75	50	60	M12	M16	1,600
J 8- 75	1206		38	75	130	8000	5800	100	60	80	M16	M16	2,750
J16- 75	1207		38	75	130	16000	11600	125	90	115	M16	M16	5,000
J 2- 95	1208	17,5	50	95	175	2000	1550	60	35	45	M12	M12	1,200
J 4- 95	1209		50	95	175	4000	3100	75	50	60	M12	M16	2,100
J 8- 95	1210		50	95	175	8000	6200	100	60	80	M16	M20	3,600
J16- 95	1211		50	95	175	16000	12500	130	90	115	M16	M20	7,200
J 2-125	1212	24	50	125	210	2000	1600	75	35	45	M12	M12	2,300
J 4-125	1213		50	125	210	4000	3200	85	55	70	M12	M16	3,000
J 8-125	1214		50	125	210	8000	6450	125	70	95	M16	M20	6,500
J16-125	1215		50	125	210	16000	13000	140	95	115	M16	M20	8,400
J 2-170	1216	36	70	170	300	2000	1700	75	35	45	M12	M12	3,000
J 4-170	1217		70	170	300	4000	3400	100	55	80	M12	M16	5,800
J 8-170	1218		70	170	300	8000	6850	125	70	115	M16	M24	9,000
J16-170	1219		70	170	300	16000	13700	160	100	115	M16	M24	15,000
J 4-250	1220	52	95	250	500	4000	3600	125	70	115	M12	M16	14,300
J 8-250	1221		95	250	500	8000	7250	140	80	115	M16	M24	17,500
J 4-325	1222	72,5	140	325	620	4000	3700	125	70	115	M12	M20	17,500
J 8-325	1223		140	325	620	8000	7400	160	80	115	M16	M24	29,000

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)
P0 - Flexion resistance
P50 - 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