Zw8-12y Type Outdoor High-Voltage AC Prepaid Metering Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type and Energy-Storage Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Model NO.: ZW8
• Type: Circuit Breaker
• Function: Break Load Current, Over-Load Current
• Certification: ISO9001-2000
• Transport Package: Export Box
• Trademark: DGG
• Origin: China
• HS Code: 8504311000
• Production Capacity: 100000PCS/Year

Product Description

GENERAL
 

ZW8-12Y series Outdoor High-Voltage AC prepaid metering vacuum circuit breaker (hereinafter referred to as "prepaid circuit breaker") is applicable to the power system with three-phase AC 50Hz and rated voltage of 12kV. As integrated switch equipment, it is matched with the three-phase multi-function meter to realize the breaking and closing of the load current, overload current, and short-circuit current of the distribution system, and has a high-precision high-voltage metering device to realize the active and reactive energy meters, All measurement, settlement and bookkeeping functions of active power demand meter, power factor meter, prepayment meter, and multi-rate meter can be flexibly preset with multi-function overload alarm, automatic power failure, phase loss alarm, recording, and automatic meter reading.

Prepaid circuit breakers comply with GB /  T19842014 high voltage AC circuit breakers, DL / T 402-2016 high voltage AC circuit breakers, DL / t4032000 technical conditions for ordering 12kV ~ 40 high voltage vacuum circuit breakers, GB / T 20840.2-2014 transformer part 2: supplementary technical requirements for current transformers GB / T 20840.32014 inductance part 3: supplementary technical requirements for electromagnetic voltage transformer and DL / T 721-2013 distribution automation remote terminal and other technical standards.

MODEL DESCRIPTION




USAGE: ENVIRONMENTAL CONDITION

1. Altitude: ≤ 1000m, If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
2. Ambient temperature: -40^oC ~ +45^oC, 
3. Maximum daily temperature difference: 25K 
4. Humidity: Average daily relative humidity: 95%, average monthly relative humidity: 90%. 
5. Sunshine intensity: not more than 0.1W/cm² 
6. Wind Speed:  34m/s 
7. Wind pressure: 700Pa
8. Pollution level: e - level
9. Icing thickness: Not more than 10mm 
10. Resistance to floor drain: horizontal acceleration 0.3g, vertical acceleration 0.2g

MAIN ADVANTAGES

☆ the overall structure is a three-phase common box structure, the box body is dry air, and the spring operating mechanism is arranged on the side of the box.
☆ the voltage transformer and the current transformer are installed inside the box, with the advantages of high measurement accuracy, low self-loss, no noise, strong insulation performance, and maintenance-free.
☆ it has the advantages of being explosion-proof, anti-condensation, anti-pollution, and no environmental impact.
☆ the body can be equipped with an isolating switch, and the interlock device is installed between the two, with obviously visible fracture, which effectively improves the safety of product maintenance and overhaul.
☆ it can realize three-stage protection, zero sequence grounding protection, reclosing, and remote communication.

MAIN TECHNICAL PARAMETERS

Main Technical Requirements Of Vacuum Circuit Breaker Body
 

No.	Item		Unit	Data
1	Rated frequency		Hz	50
2	Rated voltage		kV	12
3	Rated current		A	630 / 1250
4	Rated short-time power frequency withstand voltage	Interphase, to earth(wet)	kV/min	34/1
		Interphase, to earth(dry)		42/1
		Fracture (dry)		48/1
		Secondary circuit to earth		2/1
5	Rated lightning impulse withstand voltage	Interphase, to earth	kV	75
		Fracture		85
6	Rated short-time withstand current and duration		kA/s	20/4   25/4
7	Rated Short-circuit breaking current(Effective value)		kA	20 / 25
8	Rated short-circuit making current(peak)			50 / 63
9	Rated Peak-withstand current			50 / 63
10	Main circuit resistance	Without Isolation Switch	μΩ	not less than120
		With Isolation Switch		not less than 200
11	Rated Short-circuit breaking current breaking times		Times	30
12	Rated operating voltage and Rated Voltage for auxiliary(control) circuit		V	AC/DC220 DC48, DC24
13	Mechanical life		Times	10000
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.

Main Technical Parameters of High-Pressure Metering Part
 

No	Item		Unit	Data
1	Rated frequency		Hz	50
2	Power Factor			0.8 ()
3	Rated Primary Voltage	Three-phase three-wire system	kV	10
		Three-phase four-wire system		10/
4	Rated Secondary Voltage	Three-phase three-wire system		0.1/0.22
		Three-phase four-wire system		(0.1/)/0.22
5	Wiring mode of Voltage Transformer	Three-phase three-wire system		V-V
		Three-phase four-wire system		Y-Y
6	Rated Primary Current		A	5~600
7	Rated Secondary Current			5
8	Standard level of voltage transformer			0.2/3
9	Standard level of Current transformer			0.2S
10	Rated output of voltage transformer		VA	15/200
11	Voltage transformer limit output			500 (3-level)
12	Rated output of Current transformer			10
13	Polarity			Minus polarity
14	Rated Short-time Power frequency Withstand Voltage		kV/min	42/1
15	Rated Lightning Impulse Withstand Voltage		kV	75

OUTLINE AND INSTALLATION DIMENSION