Our advantage:

1). High vacuum degree, most vacuum interrupters’ vacuum degree is N*10^-5Pa;

2). Low leakage rate, the air leakage rate of the dispatched expert product is less than 1/100000;

3). Dayu Hanguang vacuum interrupters have been used in high-speed railway station projects which have been running well.

VITD12/630-20 TD314W
No.	Main Technical Specification
VOLTAGE RATINGS
1	Rated voltage（Ur）	kV	12
2	Rated short-time Power frequency withstand voltage(Ud)	kV	48
3	Rated lightning impulse withstand voltage（Peak）(Up)	kV	85
4	Rated frequency(fr)	Hz	50
CURRENT RATINGS
1	Rated current(Ir)	kA	630
2	Circuit resistance at lowest rated contact force(μΩ)	μΩ	≤30
3	Rated short-circuit breaking current(Isc)	kA	20
4	Breaking operations of rated short circuit breaking current	Times	30
5	Rated short-time withstand current(Ik)	kA	20
6	Rated duration of short-circuit（tk）	S	4
7	Rated peak withstand current(Ip)	kA	50
8	Rated short-circuit making current(IMC)	kA	50
9	Rated cable-charging breaking current(Ic)	A	25
★ 10	Rated breaking current of single capacitor bank(Isb)	A	400
★ 11	Rated breaking current of back-to-back capacitor bank(Ibb)	A	400
MECHANICAL DATA
1	Weight of movable parts	kg	≤0.7
2	Closing force due to bellow and atmosphere	N	70±40
3	Force required to hold contacts open at full storke	N	120±50
MECHANICAL REQUIREMENTS
1	Clearance between open contacts	mm	9±1
2	Average opening speed (contact close position~75%contact gap)	m/s	1.2±0.2
3	Average closing speed (30%contact gap-contact close position)	m/s	0.6±0.2
4	Rated added extemal contact final force	N	1600±160
	Added external contact force at contact touch poin		1180±80
5	Contact bouncing duration at closing operation	ms	≤2
6	Closing and opening non-simultaneity of three-phase contacts	ms	≤1
7	Maximum rebound during opening	mm	≤2
LIFE
1	Storage life	years	20
2	Mechanical endurance	Times	10000
3	Contacts limit erosion	mm	3
NOTES
1. * Rated insulation values require external insulation,such as SF6,oil or solid dielectric material etc.
2. ★ Rated characteristics to be given on request.

Application:

Our products have been widely used in power distribution and transmission system of electric power, metallurgy, petroleum, chemistry, mine, railway, broadcast, communication industries.

High-quality raw material:

Our core components are purchasing from famous companies. The main components of vacuum interrupters are purchase from very famous manufactures, contacts supplier is the world’s largest contact manufacture, the supplier of ceramics also experts to USA and with high-level quality.

High-level lightning impulse withstand voltage:

The lightning impulse voltage of our vacuum interrupters are very good, for example, 12kV VI can reach up to 95kV, 24kV VI can up to 145kV, 40.5kV VI can up to 215kV, there is a report of 24kV VI, the BIL can up to 188.22kV.

Qualification:

Dayu Hanguang Brand vacuum interrupters have successfully passed type tests in authoritative test stations, such as KEMA,KERI, Italy CESI, India CPRI, XIHARI (Xi'an High Voltage Apparatus Research Institute),the state high voltage apparatus quality supervision and inspection centre test station, the Ministry of railways product quality supervision and inspection center etc.

To be your partner not supplier

To supply you with reliable products.

To be the expert of the vacuum interrupters

http://www.dyhg-vacuuminterrupter.com/