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ZN63 (VS1)-12C Vacuum Circuit Breaker (Side-Operated)

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ZN63 (VS1)-12C Vacuum Circuit Breaker (Side-Operated)

ZN63C-12 series indoor AC MV vacuum circuit breaker (hereinafter referred to as circuit breaker) is an indoor switchgear with three-phase AC 50Hz and rated voltage of 12kV, which can be used for the control and protection of electrical facilities in industrial and mining enterprises, power plants and substations It is suitable for places with frequent operations.
The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, and is used as a fixed installation unit.
Standard: IEC 62271-100

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Product Details

Selection

ZN63

630

P210

Name

Structure

Rated voltage(KV)

Pole type

Operating mechanism

Rated current(A)

Rated short-circuit
breaking current(KA)

Installation

Main circuit
wiring direction

Phase distance

Indoor vacuum circuit breaker

Side
operation

12:12KV

No mark:
Insulating
cylinder
type
P: Solid-sealing
type

T:Spring type

630
1250
1600
2000
2500
3150
4000

20
25
31.5
40

FT: Fixed type

L： Left
R： Right

P210

Note:
1. order a ZN63 side-mounted main circuit with right wiring, rated voltage 12KV, rated current 630A, rated short-circuit breaking current 25KA.

Operating conditions

1. The ambient temperature is not higher than +40°C and not lower than -15°C (storage and transportation at -30°C are allowed);
2. The altitude is not higher than 1000m;
3. Relative temperature: the daily average is not more than 95%, and the monthly average The value is not more than 90%, the daily average value of saturated vapor pressure is not more than 2.2×10-’MPa, and the monthly average value is not more than 1.8×10MPa;
4. The seismic intensity does not exceed 8 degrees;
5. There is no fire, explosion hazard, serious pollution, Places subject to chemical corrosion and severe vibration.

Features

1. The arc extinguishing chamber and operating mechanism of the circuit breaker are arranged in a front-to-back configuration and connected as a whole through a transmission mechanism.
2. Depending on the design of the switchgear, the primary conductive output can be divided into right output and left output.
3. The main conductive circuit is primarily designed with an insulating cylinder, but it can also be designed with a fixed-sealing pole method.
4. The operating mechanism adopts a spring energy storage type and has both electric and manual energy storage functions.
5. It features an advanced and rational buffering device, ensuring no rebound during circuit interruption and reducing the impact and vibration during circuit breaking.
6. It requires minimal or no adjustments and requires very little maintenance or is maintenance-free.
7. The mechanical lifespan can reach 20,000 cycles.

Technical data

Technical datas are shown in Table 1

Item		Unit	Value
Rated voltage			12
Rated insulation level	Rated lightning impulse withstand voltage (peak) 1min power frequency withstand voltage	KV	78（Phase-to-phase）,80（Phase-to-phase） 42（Phase-to-phase）,48（Phase-to-phase）
Rated short-circuit breaking current(KA)		KA	25	31.5
Rated current		A	6,301,250	63,012,501,600
Rated thermal stable current (effective value)		KV	25	31.5
Rated dynamicstable current (peak value)			63	80
Rated short-circuit making current (peak value)			63	80
Rated short-circuit breaking current breaking times		Times	50
Secondary circuit power frequency withstand current		V/min	2000
Rated operating sequence			“Opening -0.3s – closing and openin g -180s – closing and opening “
Rated thermal stability time		S	4
Rated single/back to back capacitor bank breaking current		A	630/400
Mechanical life			20000

The mechanical characteristic parameters are shown in Table 2

Item	Unit	Value
Contact distance	mm	11±1,9±1（Solid sealing type）
Contact travel	mm	3.5±1
Average closing speed (6mm~contact closed)	m/s	0.4~0.8
Average opening speed (contact separation -6mm)	m/s	0.9~1.3
Opening time (rated voltage)	ms	20~50
Closing time (rated voltage)	ms	35~70
Contact closing bounce time	ms	≤2
Three phase opening asynchrony	ms	≤2
Allowable cumulative thickness of wear for moving and stationary contacts	mm	3
ain electrical circuit resistance	μ Ω	≤（630A），≤ 45（ 1250A）
Contact pressure of closing contacts	N	2400±200（ KA），3100±200（ 31.5KA）

Opening and closing coil parameters are shown in Table 3

Item	Closing coil	Opening coil	Value
Rated operating voltage	AC110/220 DC110/220	AC110/220 DC110/220	The opening coilshall not open when it is less than 30% of the rated operating voltage
Coil power	264	264
Normal operating voltage range	85% -110% rated voltage	65% -120% rated voltage

Energy storage motor parameters are shown in Table 4

Model	Rated voltage ( V )	Rated input power ( W )	Normal operating voltage ( V )	Energy storage time at rated voltage ( S )
ZYJ55-1	DC110 CD220	50~75	85% -110% rated voltage	≤15