Description

System Rated Voltage (kV r.m.s.)	Maximum Continuous Operating Voltage (kV r.m.s.)	Lightning Residual Voltage at Rated Current (kV peak)	Line Discharge Category	Minimum Creepage Length (mm)	2 ms Rectangular Current Impulse Withstand (A)	4/10 µs High-Current Surge Rating (kA peak)
6	5.1	18	1	280	250	100
9	7.65	27	1	320	250	100
12	10.2	36	1	320	250	100
15	12.75	45	1	450	250	100
18	15.3	54	1	450	250	100
21	16.8	63	1	450	250	100
24	19.2	72	1	510	250	100
27	21.6	81	1	510	250	100
30	24	90	1	890	250	100
33	26.4	99	1	890	250	100
36	28.8	108	1	890	250	100
42	33.6	126	2	1256	400	100
48	39	139	2	1256	400	100
54	42	160	2	1256	400	100
60	48	178	2	1440	400	100
66	52.8	196	2	1440	400	100
72	57	214	2	1440	400	100
84	67.2	244	2	2200	400	100
90	72.5	249	2	2200	400	100
96	75	265	3	3350	800	100
108	84	281	3	3350	800	100
120	96	300	3	3948	800	100
150	120	416	3	4400	800	100
200	156	520	3	6700	800	100
108	84	281	3	3555	800	100
120	96	300	3	4106	800	100
150	120	416	3	4400	800	100
200	156	520	3	6700	800	100
444	324	1106	4	17052	2000	100

Porcelain Zinc-Oxide Surge Arresters