YH series three-phase combined metal oxide lightning arresterDetailed product description：

The YH series three-phase combined metal oxide lightning arrester is suitable for neutral point non effectively grounded systems with rated voltages of 3kV, 6kV, and 10kV, protecting electrical equipment from damage caused by relative to ground and phase to phase lightning overvoltage and operational overvoltage. The technical performance of the product meets the requirements of LD423JT lightning arrester technical conditions, national standard 11032-2000, JB/T9672.2, and industry standard "AC three-phase combined gapless metal oxide lightning arrester" draft for approval.

YH series three-phase combined metal oxide lightning arrester model and its representative significance

Y H □□□2—□/□×□/□—□
││││││ │ │ │ │ │
││││││││││└ Structural forms: "T" shape, "L" shape, "┙" shape, "I" rectangle, "■" square
││││││││󧳢└© - The residual voltage between phases of the lightning arrester at the nominal discharge current shall not exceed kV
│││││││©-- Rated voltage between phases of lightning arrester
││││││©-- The residual voltage of the lightning arrester relative to the ground under the nominal discharge current shall not exceed kV
│││││©---------------------------------------------------
││││©--------------------------------------------------
│││©-----------------------------------------------------------------------------------------------------------------------------------------------------------------
│││©-------------------------- C: series type W: gapless
││©-----------------------------------------------------------------
│©------------------------ Composite jacket
©------------------- Metal oxides

Normal usage conditions
Suitable for indoor use
The ambient temperature shall not be higher than+40℃¡ and not lower than -40℃¡;
Altitude not exceeding 1000m;
The frequency of the power system shall not be lower than 48Hz and not higher than 62Hz;
The short-term power frequency voltage rise of the installation point power system shall not exceed the rated voltage of the lightning arrester;
Areas with earthquake intensity of 7 degrees or below
Structural features and working principle
The product is composed of four units as a whole. Each unit of the product with a series gap is mainly composed of a gap between parallel cathode rings and a non-linear excellent zinc oxide cathode plate connected in series. The product without a gap is mainly composed of non-linear excellent zinc oxide cathode plates connected in series within each unit. Assuming that the four unit leads are A, B, C, and O terminals, with the O terminal being a grounded symbol terminal, and the four terminals being connected to the motor a, O, c, and ground terminals respectively. Under normal operation, the relative ground voltage of each phase is borne by A and O units, B and O units, and C and O units, respectively. The phase to phase voltage is borne by A, B units, A, C units, and B, C units, respectively. When a large current flows, the zinc oxide valve plate is in a low resistance state, which limits the phase to ground and phase to phase residual voltage of the lightning arrester to the allowable values. This reliably protects the motor insulation from voltage damage. After the overvoltage wave, the current drops, and the negative value of the valve plate increases. The lightning arrester returns to its normal state and is ready to withstand the next overvoltage wave invasion

model Type	Rated voltage of lightning arrester Rated voltage of Surge Arrester	wiring way Connection method	Power frequency discharge voltage Power frequency Discharge voltage	1.2/50μ¦ S lightning Impulse discharge voltage 1.2/5μ¦S lightning Impulse Discharge voltage	Steep wave shock Residual current voltage Steep impulse Current residual voltage	8/20μ¦ S nominal discharge Residual voltage under current 8/2μ¦S residual voltage Under nominal Discharge current	operational shock Residual current voltage Operating Impulse current Residual voltage
	KV (effective value) kV (rms.)
			KV not less than kV.not less than	KV (peak value) kV (peak)	KV (peak value) not exceeding kV (peak), not more than
YH2.5C2-12.7/31 ¡12.7/31	twelve point seven	Xiangyi Xiangyi Same place Phase to phase Phase to earth	twenty-five	twenty-seven	thirty-four point seven	thirty-one	twenty-five
YH5CZ2-12.7/41 ¡12.7/41	twelve point seven	Xiangyi Xiangyi Same place Phase to phase Phase to earth	twenty-six	forty-one	forty-six	forty-one	thirty-five

model Type	Rated lightning arrester voltage Rated voltage of Surge Arrester	wiring way Connection method	The lightning arrester continues to operate voltage Continuous Operating voltage of Surge Arrester	Steep wave shock Residual current voltage Steep impulse Current residual voltage	lightning surge Residual current voltage Lightning impulse discharge voltage	operational shock Residual current voltage Operating impulse Current residual voltage	DC 1mA reference Voltage not less than D.C. 1mA reference voltage not less than
	KV (effective value) kV (rms.)		KV (effective value) kV (rms.)	KV (peak value) not exceeding kV (peak), not more than			kV
YH2.5W2-4/9.5 ¡4/11.6	four	Xiangyi Xiangyi Same place Phase to phase Phase to earth	three point five	thirteen ten point seven	eleven point six nine point five	nine point four seven point six	seven five point seven
YH2.5W2-8/18.7 ¡8/23.3	eight	Xiangyi Xiangyi Same place Phase to phase Phase to earth	six point nine	twenty-six point two twenty-one	twenty-three point three eighteen point seven	eighteen point seven fifteen	fourteen eleven point two
YH2.5W2-13.5/31 ¡13.5/38.7	thirteen point five	Xiangyi Xiangyi Same place Phase to phase Phase to earth	eleven point five	forty-three point three thirty-four point seven	thirty-eight point seven thirty-one	thirty-one twenty-five	twenty-three point two eighteen point six
YH5WZ2-5/13.5 ¡5/13.5	five	Xiangyi Xiangyi Same place Phase to phase Phase to earth	four	fifteen point five	thirteen point five	eleven point five	seven point five seven point two
YH5WZ2-10/27 ¡10/27	ten	Xiangyi Xiangyi Same place Phase to phase Phase to earth	eight	thirty-one	twenty-seven	twenty-three	fifteen fourteen point four
YH5WZ2-17/45 ¡17/45	seventeen	Xiangyi Xiangyi Same place Phase to phase Phase to earth	thirteen point six	fifty-one point eight	forty-five	thirty-eight point three	twenty-five twenty-four

HY5WR-10kV series zinc oxide lightning arrester