◆ Equipped with a new type of composite insulated vacuum circuit breaker, and has the characteristics of good interchangeability and easy replacement;

◆ A screw nut pushing mechanism is installed in the handcart frame, which can easily move the handcart and prevent misoperation from damaging the propulsion structure;

◆ All operations can be performed with the cabinet door closed,

◆ The interlocking between the main switch and the door of the handcart switch cabinet adopts the mandatory mechanism locking method to meet the "five prevention" function;

◆ There is ample space in the cable room and multiple cables can be connected;

◆ Fast grounding switch is used for grounding and loop short circuit;

◆ The enclosure protection grade is IP3×, when the handcart room door is open, the protection grade is IP2×;

◆ The product conforms to GB3906, Dl404 and adopts the international IEC298 standard by reference.

Technical data

Items		Unit	Data
Voltage		KV	40.5
Frequency		Hz	50
Current		A	1250,1600,2000
Short-circuit Breaking Current		KA	25,31.5
Making Current (Peak)		KA	63,80
4s Thermal Stability Current		KA	25,31.5
Dynamic Current (Peak)		KA	63,80
Insulation Level	1min Power Frequency Withstand Voltage (r.m.s)	KV	95
	Lightning Impulse Withstand Voltage (Peak)	KV	185
	1min Power Frequency Voltage Across the open gap (r.m.s)	KV	118
	Lightning Impulse Withstand Voltage Across the open gap (Peak)	KV	215
Enclosure Protection Class			Enclosure IP4X, Between Compartments IP2X
Enclosure Dimension (WidthDepthHeight)		mm	140028002600 160028002600
Type of Circuit Breaker			VCB: ZN85-40.5 SF6 Circuit Breaker

*Note: order switchgear should provide SLD(Single-line diagram) by customer

VS1-40.5 Technical data

Items	Unit	Date
voltage	KV	40.5
short-time power frequency withstand voltage (1min)		95
lightning impulse withstand voltage (peak)		185
frequency	Hz	50/60
current	A	1250 1600 2000 2500 4000
short-circuit drop-out current	KA	25 31.5
short-time withstand current	KA	25 31.5
short-time continual time	s	4
peak withstand current	KA	63 80
short-circuit closing current	KA	63 80
single/ back-to-back capacitor bank drop-out current	A	630/400
Opening time (rated volt.)	ms	35~60
Closing time (rated volt.)	ms	50~100
Mechanical life	times	20000
break times for rated short drop-out current	s	20
operation voltage	V	AC110/220 DC110/220
current of power storing motor	W	230
Average opening speed	m/s	1.6~2.0
Average closing speed	m/s	0.5~0.8
operation procedure		opening-0.3s-closing opening-180s-closing opening

Knkong Electric 33KV switchgear has served the international market for over the past 10 years.

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