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VTZ-40.5 Indoor Fast Vacuum Circuit Breaker
2. Operating Mechanism: Modular operating mechanism.
3. Installation Method: Center-mounted trolley or fixed cabinet.
4. Compatible Cabinet: KYN61-40.5 series switchgear, XGN-40.5 fixed cabinet.
5. Product Compliance with Standards: GB/T1984, GB/T11022.
6. Product Advantages: E2-C2-M2 performance, Simple and reliable structure, high conductivity performance, wide range of applications.
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Product Introduction
VTZ-40.5 indoor fast vacuum circuit breaker (Tongzhong Electric's special model) is an indoor switchgear for rated voltage 40.5kV, AC 50/60Hz. It adopts a modular operating mechanism and is suitable for various industrial and mining enterprises and power grid equipment. The trolley unit is used in conjunction with the KYN61 switchgear. It can also be used as a fixed unit with corresponding mechanical interlocking for fixed cabinets such as XGN-40.5.
Product Specifications
Specification Sheet
|
No. |
Name |
Unit |
Data |
|
1 |
Rated Voltage |
kV |
40.5 |
|
2 |
Rated Frequency |
Hz |
50/60 |
|
3 |
Rated Current |
A |
630/1250 |
|
4 |
Rated Power Frequency Withstand Voltage |
kV |
48(Common value) /42(Across the isolating Distance) |
|
5 |
Rated Lightning Impulse Withstand Voltage |
kV |
85(Common value) /75(Across the isolating Distance) |
|
6 |
Rated Short-Circuit Breaking Current |
kA |
25/31.5 |
|
7 |
Rated Short-Circuit Making Current (Peak) |
kA |
63/80 |
|
8 |
Rated Withstand Current (Peak) |
kA |
63/80 |
|
9 |
Rated Duration of Short-Circuit |
s |
4 |
|
10 |
Operating Cycles at Rated Short-Circuit Breaking Current |
Cycles |
E2 |
|
11 |
Mechanical Endurance |
Times |
10000 |
|
12 |
Standard Operating Sequence |
- |
O-0.3s-CO-180s-CO |
|
13 |
Allowable Wear Thickness of Contact |
mm |
≤3 |
Mechanical Characteristics
|
No. |
Name |
Unit |
Data |
|
1 |
Clearance between Moved and Fixed Contact |
mm |
18±1 |
|
2 |
Contact Overtravel |
mm |
4±1 |
|
3 |
Average Closing Speed |
m/s |
0.8±0.2 |
|
4 |
Average Opening Speed (Average Speed of First Opening at 12mm) |
m/s |
1.7±0.3 |
|
5 |
Rated Contact Pressure |
N |
3100±200N(31.5kA) |
|
6 |
Closing Time |
ms |
20～50 |
|
7 |
Opening Time |
ms |
≤20 |
|
8 |
Contact Bouncing Duration at Closing Operation |
ms |
≤3 |
|
9 |
No-Simultaneity of Closing/Opening Operations of 3-Phase |
ms |
≤2 |
Product Advantages
VTZ-40.5 indoor fast vacuum circuit breaker has many advantages:
1
Performance of the circuit breaker
E2-C2-M2
2
Simple and reliable structure
Permanent magnet mechanism, three-phase independent design.
3
High conductivity
A rational conductive circuit design meets the temperature rise requirement of 1.1 times the rated current.
4
High adaptability
This product is fully compatible with conventional KYN61-40.5 series cabinet switches, eliminating the need for special cabinet design and making it suitable for a variety of power conversion environments.
Product Applications
VTZ-40.5 indoor fast vacuum circuit breaker has many applications:
Power plants
Industrial sectors (chemicals, steel, petroleum, coal, etc.)
Grid system
Power infrastructure
Product Outline Drawing
Product wiring diagram
VTZ-40.5 indoor fast vacuum circuit breaker are customized products, and the secondary line method must be determined according to the user's operating environment.
How to select a high-quality supplier for 40.5KV indoor vacuum circuit breakers?
40.5kV intelligent vacuum circuit breakers are crucial protection and control devices in power systems, used for the opening and closing operations of high-voltage transmission and distribution lines. Selecting a high-quality 40.5kV intelligent vacuum circuit breaker requires comprehensive consideration of multiple factors, including product performance parameters, reliability, level of intelligence, after-sales service, and technical support.
Performance parameters are fundamental, such as rated voltage, rated current, breaking capacity, and insulation level; these parameters directly affect the circuit breaker's performance and safety.
The level of intelligence is an important feature of modern circuit breakers; circuit breakers with remote monitoring, fault diagnosis, and data logging functions are more favored.
Reliability is critical; products that have undergone rigorous testing and certification should be selected to ensure stable operation under various conditions.
There are many mainstream 40.5kV intelligent vacuum circuit breaker brands on the market; users are advised to combine their own needs, compare the product features of different brands and user reviews, and ultimately make an informed choice.
Reliable Vacuum Circuit Breakers, Customized for Global Clients
Professional Technical&Sales Team | On-Time Delivery
12KV/24KV/40.5KV vacuum circuit breakers
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