VCR21-40.5GD 40.5KV 36KV VCB vacuum circuit breaker for Photovoltaic, power new energy

VCR21-40.5GD 40.5KV 36KV VCB vacuum circuit breaker for Photovoltaic, power new energy

VCR21-40.5GD (embedded pole) indoor AC high voltage vacuum circuit breaker is suitable for AC 50Hz, rated voltage 40.5kV power system, used for breaking current, overload current and short circuit current, Widely used in wind energy photovoltaic power generation, box-type substations, ring main units RMU, cable branch boxes and other scenarios

Category: Switchgear & High Voltage Products

Brand: JGGY Electric

Model: VCR21-40.5GD

Power: 40.5KV/ 630A 1250A

FOB Port: Ningbo/Shanghai

Terms of Pyament: T/T, L/C

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Product Description

1 Overview

1.1 General Provisions

VCR21-40.5GD (embedded pole) indoor AC high voltage vacuum circuit breaker, suitable for AC 50Hz, rated 40.5kV power system, as the break current, overload current and short-circuit current, especially suitable for photovoltaic, wind power new energy and frequent operation and ring network power supply unit and terminal power supply transformer control and protection places.

This product has the advantages of large breaking ability, safe and reliable, long electrical life, frequent operation, less maintenance and so on. At the same time, it has obvious isolation break and a grounding knife with closing ability, with electric spring operating mechanism, and remote control ability.

1.3 Implementation standards

l IEC 62271-100:2021 High-voltage switchgear and controlgear - Part 100: Alternating-current circuit-breakers

l A GB / T 1984 high-voltage AC circuit breaker

l Common technical requirements for GB / T11022 high voltage switchgear and control equipment standards

l GB / T 311.1 Insulation fit- -Part 1: Definitions, principles and rules

l GB / T 1985 high voltage AC disconnecting switch and ground switch

l Mechanical test of the GB / T3309 high-voltage switchgear at room temperature

l Common technical requirements for DL / T 593 high voltage switchgear and control equipment standards

l Order specification for DL / T 402 high voltage AC circuit breaker

1.4 Use conditions

1.4.1 Normal use conditions

l Surrounding air temperature: upper limit + 40℃, lower limit-25℃

l Relative humidity: daily average is not more than 95%, monthly average is not more than 90%

l No corrosion or combustible gas and other obvious pollution

l No regular and violent vibration

1.4.2 Special conditions of use

For special operating conditions different from normal operating conditions, please negotiate with the manufacturer and reach a consensus before use. The company will give special processing to the circuit breakers to meet your operating environment requirements.

1.5 Product features

l Modular design, with cabinet "five prevention" simple, reliable and consistent:

l The dominant electric circuit is in the form of fixed sealing pole column. It avoids the pollution of the outdoor surface of vacuum arc extinguishing, increases the creepage distance along the surface, improves the insulation level of the circuit breaker, the modular design of the fixed sealing pole column, simple structure, few removable parts, stable mechanical properties and insulation performance;

l High voltage vacuum circuit breaker with integrated design of isolating switch, circuit breaker switch and ground breaker and with obvious isolation break:

l All state display and operation are integrated in the operation panel of the equipment, through the intuitive concise man-machine dialogue interface, all status and operation steps at a glance, can intuitively observe the isolation switch, grounding switch, the exact state of the circuit breaker switch, effectively guarantee the safety of operators and equipment, easy to understand, to avoid misoperation;

l The current transformer can be installed on the outlet side of the switch, which can reduce the size of the cabinet or box.

2 Specifications and parameters

2.1 Technical parameters

Table 1. Main technical parameters

NO	Items	unit	value
1	rated voltage	kV	40.5
2	Rated short-time power frequency withstand voltage (1 min) Interphase, ground / vacuum break / isolation break		95/118
3	Rated lightning impact withstand voltage (peak value) Interphase, ground-facing / / vacuum breaks / isolation breaks		185/215
4	rated frequency	Hz	50
5	rated current	A	630～1250
6	Rated short circuit open break current	kA	20、25、31.5
7	Rated short-time current	kA	20、25、31.5
8	Rated short-circuit duration	s	4
9	Rated peak order to withstand current	kA	50、63、80
10	Rated short-circuit switch-off current	kA	50、63、80
11	Rated operation order	/	O-0.3s-CO-180s-C
12	Power frequency withstand voltage of secondary circuit (1 min)	kV	2
13	Rated single / back to back capacitor bank open current	A	630/400
14	Rated short circuit current break times	Times	30
15	Mechanical life (circuit breaker / disconnector / ground switch)	Times	10000/2000/2000

Table 2. Technical parameters of the vacuum circuit breaker

NO	Items	unit	value
1	clearance between open contacts	mm	18±1
2	overtravel		4±1
3	Contact is allowed to wear in thickness		3
4	Three-phase separation, closing is inconsistent	ms	≤2
5	Bulounce time of contact closing	ms	≤5
7	Average closing speed	m/s	0.8±0.2
8	Average split speed	m/s	1.6±0.2
9	Closing time (rated operating voltage)	ms	≤65
10	Opening time (rated operating voltage)	ms	≤45
11	Circuit resistance (including isolation)	ｕΩ	≤180

Table 3. Technical parameters of the operating mechanism

NO	Items		unit	value
1	Rated voltage of energy storage motor (fluctuation range: 85%~110%)		V	DC110、AC220、DC220
2	Rated output power of the energy storage motor		W	≤70
3	Energy storage time		s	≤15
4	rated operational voltage	Closing electromagnet (85%~110%)	V	DC110	DC220 AC220
5		Electromagnet (85%~110%)
6	rated operational current	closing electromagnet	A	2.4	2.0
7		tripping electromagnet			2.2
8	Rated maximum output power	closing electromagnet	W	480	440±3
9		tripping electromagnet			440±3