Lighting Arrestes with Gap

Protection principle（Picture：HY10CX1-90/235）

Nominal Discharge Current 5kA/10kA Series Of Suspending Line Arresters with Series of Gap connect to insulator in parallel & series. The volt-second property of line type arrester (gap unit + arrester unit) matches that of insulator string. If lightning strikes to line (shielding failure or counterattack), the line type arrester should operate reliably and prvent insulator string from flashover, so the switch of transmission line will not trip and improve the reliability and economical efficiency of power suply system.

Utility

Insulator string is the weakest link in the insulation structure of tower top of transmission line. If shielding failure or countattack to wire during lightning strike to tower top, strong short circuit current will pass throught the surface of insulator after power frequency forming electric arc. This will result in: firstly, switch shutting off short circuit current will burn through contact, which increases the frequency of big repair and requires higher expenses. Secondly, after flowing power-frequency short-circuit current caused by insulator (series ) flashover, ends will be damaged seriously, deterioration and ablation will occur in interface, and insulator (seires) will have to be powered off for change, which will increase maintenance work and require more operating expenses. The mounting of line type arrester can improve lightning resistance level effectively, protect insulator (series), reduce the trip rate, improve the reliability of electricity and obviously reduce maintenance & operating expenses.

Specification

Model	Rated voltage	Nominal Voltage	Continuous Operating Voltage	DC Reference Voltage	Residual Voltage			Discharge Capacity		0.75U 1mA Leakage Current	Creepage Distance	Mounting Height	Structural Height
					Lightning Impusle Current	Steep impulse Current	Switching Impulse Current	2ms Square Wave	4/10μs Heavy Current
	Virtual Value kV			kV	Peak Value Kv≦			A	kA	μA	mm/kV	mm	mm
HY₅CX₁-42/120	42	35	33.6	60	120	130	96	250	65	50	47	670/590	510
HY₅₍₁₀₎CX₁-78/203	78	66	62.4	110	203	233	173	400	65	50	51	990/960	890
								600	100
HY₅₍₁₀₎CX₁-90/235	90	110	72	130	235	264	200	400	65	50	33.7	1265/1250	890
								600	100
HY₅₍₁₀₎CX₁-180/470	180	220	144	260	470	528	400	400	65	50	33.7	1835/2280	1675
								600	100
HY₅₍₁₀₎CX₁-192/500	192	220	156.8	272	500	560	400	400	65	50	33.7	1835/2280	1675
								600	100
HY₅CX₂-42/120	42	35	33.6	60	120	130	96	250	65	50	35.5	670/220	510
HY₅₍₁₀₎CX₂-78/203	78	66	62.4	110	203	233	173	400	65	50	34.2	990/400	890
								600	100
HY₅₍₁₀₎CX₂-90/235	90	110	72	130	235	264	200	400	65	50	33.7	1265/550	890
								600	100
HY₅₍₁₀₎CX₂-180/470	180	220	144	260	470	528	400	400	65	50	33.7	18/35/880	1675
								600	100
HY₅₍₁₀₎CX₂-192/500	192	220	156.8	272	500	560	400	400	65	50	33.7	1835/880	1675
								600	100

Lightning Arresters >> Lighting Arrestes with Gap