Packaging & Delivery

Package Size 220.00cm * 120.00cm * 150.00cm Package Gross Weight 150.000kg

Product Description

Application
The SZ9-1600~20000/33KV three-phase oil-immersed on-load tap-changing power transformer is suitable for transmission and distribution systems of 35kV, 50Hz power lines. The product complies with various conditions specified in GB1094 "Power Transformers" standard.
Product Features
The SZ9-1600-20000 33kV three-phase oil-immersed on-load tap-changing power transformer achieves the advanced level of comparable American products from the 1990s. It features advanced manufacturing techniques, innovative structure, and aesthetically pleasing design, along with low losses, low noise, and strong resistance to sudden short-circuit overloads. The ZW32-12(G) series outdoor high-voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor power distribution switchgear rated at 12kV, designed for three-phase AC 50Hz systems. The circuit breaker is primarily used to interrupt and close load currents, overload currents, and short-circuit currents in power lines. It provides overload and short-circuit protection functions, meets control and measurement requirements, and can also perform remote control and monitoring functions. It is widely used in substations and industrial and mining enterprise power distribution systems for control and operation purposes, particularly suitable for locations requiring frequent operation.
The circuit breaker complies with technical standards including GB1984-2003, DL/T402-2007, and IEC60056. Structural Features
1. Overall structure is a three-phase pillar-type dry-type design;
2. Fully enclosed construction ensures excellent sealing performance with superior moisture and condensation resistance, suitable for high-temperature and humid environments;
3. Vacuum arc extinguishing provides reliable insulation;
4. Reliable breaking and closing performance with no risk of combustion or explosion;
5. Compact size, lightweight, maintenance-free, and long service life;
6. Manual, motorized, or remote control operation for switching;
7. Operating mechanism sealed within the switch housing base to prevent corrosion from prolonged outdoor exposure;
8. Innovative, compact, and reliable operating mechanism design with a service life of 10,000 cycles.

Project	Unit	Parameter Value
Rated Voltage	kV	12
Rated Current	A	630/1250
Rated Frequency	Hz	50
Overcurrent Trip Rated Current	A	5
Mechanical Life	Second	10000
Overcurrent Trip Device Rated Current	A	5

Scope of Application
The ZN63(VS1)-12 series indoor draw-out type high-voltage vacuum circuit breakers are indoor switchgear designed for three-phase AC 50Hz systems with a rated voltage of 12kV. They are suitable for control and protection applications in industrial and mining enterprises, power plants, substations, and electrical facilities, and are particularly well-suited for locations requiring frequent operation. Featuring an integrated operating mechanism and breaker body, the design can function as a fixed installation unit or be equipped with a dedicated push-in mechanism to form a draw-out unit. The main circuit employs integral solid-insulated busbars to achieve compact size, high reliability, and maintenance-free operation. It is compatible with draw-out switchgear cabinets such as KYN28A-12(GZS), and the fixed-type version can be used with XGN series fixed switchgear cabinets. Operating Environment
1. Ambient Temperature: Not exceeding 40°C, not below -10°C (storage and transportation permitted at -30°C).
2. Altitude: Not exceeding 1000m. (If higher altitude is required, the rated insulation level shall be correspondingly increased).
3. Relative Humidity: Daily average ≤95%, daily average saturated vapor pressure ≤2.2×10^-³ MPa, monthly average ≤1.8×10^-³ MPa.
4. Seismic Intensity: ≤8 on the Mercalli scale.
5. Locations free from fire, explosion, severe contamination, chemical corrosion, and intense vibration.

Project	Unit	Parameter Value
Rated Voltage	kV	12
Maximum Operating Voltage	kV	12
Rated Thermal Stability Time	S	4
Mechanical Life	Second	20000
Rated Short-Circuit Breaking Current Number of Breaks	Second	50
Operating Mechanism Rated Closing Voltage (DC)	V	AC,DC 110,220
Contact Gap	mm	11±1
Overstroke (contact spring compression length)	mm	3.5±0.5
Three-phase Closing And Opening Bounce Time	ms	≤2
Contact Bounce Time During Closing	ms	≤2

Main ProductsCompany ProfileWenzhou Longqi Import and Export Co., Ltd. is a wholly-owned subsidiary of Longxi Electric Co., Ltd., focusing on glob- al new energy and infrastructure sectors. As a professional international trade service provider, we integrate new energy power systems, water conservancy systems and new energy lighting systems, bridging China's intelligent manufactur- ing with the global market relying on the parent company's decades-long technical accumulation and production strength.   Core Business 1. New energy power systems: Integrated photovoltaic energy storage and distributed power generation solutions (incl- uding design, equipment supply, installation and operation maintenance) 2. Core power equipment: Complete sets of high and low voltage switchgear, intelligent circuit breakers, power transfor- mers, prefabricated substations and other products covering the entire power transmission and distribution industry chain 3. Intelligent control equipment: Industrial automation control systems, electrical control enclosures/cabinets, intellig- ent measurement and control instruments, with customized solutions available   Core Advantages: • State-owned enterprise background: Benchmarked against Chint, certified by SGS/TüV, qualified for State Grid projects • Full-chain services: One-stop support (market research, customization, logistics, foreign exchange) with 7×24 cross-border communication • Global layout: Covering Belt and Road, Europe, America, Southeast Asia, Middle East, Africa via Made-in-China.com • Customized solutions: Tailored to regional standards, scenarios and budgets with full-process follow-up Adhering to "Honest Performance & Value Symbiosis", we serve global customers with professional capabilities. Welcome to negotiate via Made-in-China.com for accurate solutions and quick quotations!CertificationsOne-Stop Power SolutionsApplication ScenariosPackaging & Shipping View More

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