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Medium & High Voltage High-Altitude Switchgear
Medium & High Voltage High-Altitude Switchgear

Scope of Application: Designed for power plants, substations, and industrial distribution systems at altitudes above 1,000 meters, facilitating power distribution, equipment protection, and control in medium-high voltage (3.6kV–40.5kV) grids under high-altitude insulation and thermal constraints.

Rated Voltage Levels:Medium Voltage: 3.6kV, 7.2kV, 12kV, 24kV (IEC 62271-1)/High Voltage: 40.5kV (IEC 62271-200)
Insulation Levels:Power-frequency withstand voltage (1min): Per IEC 60694, e.g., ≥28kV for 12kV switchgear (sea-level value), adjusted for altitude;Lightning impulse withstand voltage: e.g., ≥75kV for 12kV switchgear (sea-level value).
Rated Current: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A (IEC 62271-1).
Altitude Derating Factor: >1,000 meters; insulation strength decreases by 1% per 100m altitude increase (IEC 60694).

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Medium-High Voltage Fire-Resistant Switchgear
Medium-High Voltage Fire-Resistant Switchgear

One-Sentence Summary:High-voltage fire-resistant switchgear is designed for electrical systems rated up to 10kV, providing fire-resistant power distribution, protection, and control in high-fire-risk installations such as substations, industrial plants, and high-rise buildings.

Rated Voltage: 7.2kV, 12kV, 24kV (per IEC 62271-1)
Rated Current: 630A, 1250A, 2500A, 3150A
Rated Short-Circuit Breaking Current: 20kA, 25kA, 31.5kA, 40kA
Insulation Level:Power Frequency Withstand Voltage: 42kV/1min (for 12kV switchgear)/Lightning Impulse Withstand Voltage: 75kV (for 12kV switchgear)
Ingress Protection (IP): IP4X (enclosure) / IP2X (operating front) (IEC 60529)
Fire Resistance Rating: ≥1 hour (passing IEC 60695 fire resistance tests)

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XGN2-12 Indoor Metal-enclosed Switchgear
XGN2-12 Indoor Metal-enclosed Switchgear

Product Overview:XGN2-12 is an indoor, metal-enclosed, air-insulated 12kV/50Hz/60HZ switchgear. Compliant with GB3906/IEC 60298, it handles frequent switching for power distribution in urban/industrial networks (e.g., residential areas, hospitals, substations). Supports single-bus, single-bus with bypass, or double-bus configurations.

Rated Voltage: 10KV,11KV,12 kV (max. operational voltage)
Rated Current: 630 A – 3150 A
Insulation Level:Power Frequency Withstand Voltage: 42 kV/1 min/Lightning Impulse Withstand Voltage: 75 kV
Breaking Capacity:Rated Short-Circuit Breaking Current: 16–40 kA/Rated Short-Circuit Making Current: 40–100 kA
Ingress Protection (IP): IP2X (standard)

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XGN15-12 Fixed-type Switchgear
XGN15-12 Fixed-type Switchgear

Scope of Application:The XGN15-12 is an indoor, air-insulated, metal-enclosed fixed-type switchgear for three-phase AC 50Hz systems, designed for power distribution, circuit protection, and control in substations, industrial plants, and infrastructure networks at 12kV.

Rated Voltage (IEC 62271-200): 15kV,12KV,11KV,10KV,7.2KV,6.6KV
Rated Current: Main circuit: 630A, 1250A, 1600A, 2000A, 2500A, 3150A.
Rated Short-Circuit Breaking Current: 25kA, 31.5kA (1s withstand).
Power Frequency Withstand Voltage: 42kV/1min (Main circuit), 30kV/1min (Auxiliary circuit).
Lightning Impulse Withstand Voltage: 75kV (Peak).
Ingress Protection (IP) Rating (IEC 60529): Enclosure: IP4X, Between compartments: IP2X.

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PV DC Combiner Box
PV DC Combiner Box

Application Scope:The PV DC combiner box is primarily used in photovoltaic (PV) power generation systems to combine, protect, and monitor multiple DC inputs from PV strings before delivering the consolidated output to inverters or DC distribution cabinets. It is suitable for centralized and string PV power plants, as well as commercial, industrial, and residential rooftop PV systems, ensuring safe and stable operation.

Selection Criteria
Number of Inputs: Determined by PV string configuration (e.g., 6-in, 8-in, 12-in, 16-in).
Rated Voltage/Current: Must match the PV module’s maximum open-circuit voltage (e.g., 1000V, 1500V) and input current per string (e.g., 10A, 15A, 20A).

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PV AC Combiner Box
PV AC Combiner Box

Application Scope:The PV AC combiner box is used in photovoltaic systems to combine, protect, monitor, and distribute AC power from multiple inverters, ensuring safe and efficient transmission to the grid or load. It is suitable for commercial, industrial, ground-mounted, and residential PV systems.

Selection Criteria

RatedVoltage: Match grid voltage (e.g., 400V, 690V).
Rated Current: Total inverter output current + 20%-30% margin.
IP Rating: IP65+ for outdoor; IP20-IP54 for indoor.Ingress
Protection (IP) Rating: Overcurrent, short-circuit, surge, and residual current.
Communication: RS485/Modbus or wireless for remote monitoring.

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Low-Voltage Marine Switchboard
440V/690V Low-Voltage Marine Switchboard

Product Introduction:440V/690V LV Marine Main Switchboards are the core power distribution equipment in ship electrical systems, compliant with IEC 60092 standards. The 440V system is common on medium/small vessels, while the 690V system is primarily used on large ships and offshore platforms – reducing cable cross-sections by >50% and significantly lowering line losses and installation costs.

Parameter : 440V System/690V System
Rated Voltage :440V AC ±10%/690V AC ±10%
Rated Frequency : 60Hz/50Hz/60Hz/50Hz
Rated Current: 800A-6300A/400A-5000A
Short-circuit Breaking Capacity (Icw) :50kA-100kA (1s)/65kA-150kA (1s)
Protection Class :IP44/IP56 (Front/Enclosure)/IP44/IP56
Ambient Temperature : -25℃~+55℃/-25℃~+55℃

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Outgoing-Feeder-Switchgear
15KV-10KV Outgoing Feeder Switchgear

Product Overview: 15KV-10KV Medium Voltage (MV) Outgoing Feeder Switchgear is a key part of power distribution systems, controlling and protecting circuits up to 15KV (including 12KV/11KV/10KV). Compliant with IEC 62271 standards, these metal-enclosed units are used in industrial, commercial, and utility networks. They include circuit breakers, disconnectors, protection relays, and monitoring systems for safe, modular operation.

Rated Voltage : 10KV/11KV/12KV/15KV
Rated Current : 630A/1250A/1600A/2000A/2500A
Short-Circuit Breaking Capacity : 20KA/25KA/31.5KA/40KA
IP Rating : IP4X (Enclosure)/IP2X (Front Panel)
Insulation Medium : Air Insulation/SF6 Gas Insulation
Operating Mechanism :  Spring-Charged/Motorized/Manua

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15KV-10KV Bus Tie Switchgear
15KV-10KV Bus Tie Switchgear

Product Overview:The Bus Tie Switchgear is a key component in medium-voltage (MV) power systems, connecting and isolating busbar sections. Rated for 10KV (IEC) to 15KV (ANSI), it ensures load balancing, power continuity, and quick reconfiguration during faults or maintenance. Compliant with IEC, GB, and ANSI standards, it’s widely used in industrial, commercial, and utility networks.

Rated Voltage : 10KV/11KV (IEC) | 12KV/15KV (ANSI)
Rated Current : 630A–4000A (copper busbar rating)
Short-Time Withstand : 25kA–50kA/1–3s
Power Frequency Withstand : 42KV/1min (12KV class)
Protection Class  :  IP4X (enclosure) | IP2X (compartments)
Mechanical Life : ≥10,000 operations (circuit breaker)

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132kv-110kv-gas-insulated-metal-enclosed-switchgear
ZF-145 Gas-Insulated Metal-Enclosed Switchgear (GIS)

Scope of Application:he ZF-145 gas-insulated metal-enclosed switchgear (GIS) is an advanced high-voltage electrical equipment widely used in 145KV, 132KV, and 110KV power systems both domestically and internationally.

Rated Voltage: 145kV/132KV (international standard)/126kV/110KV (domestic standard)
Rated Current: 3150A (circuit-breaker), busbar current up to 4000A
Short-circuit Breaking Capacity: 40kA (rated short-circuit breaking current and rated short-time withstand current)
Peak Withstand Current: Up to 100kA
Mechanical Endurance: Over 10,000 operations
Arc Quenching Method: Self-extinguishing technology combining thermal expansion and assisted blowing

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INDUSTRY NEWS More
Switchgea
Development Directions of Switchgear under New Quality Productive Forces
      Enhancing development quality and transitioning from the previous extensive economic growth model to intensive, high-quality development are equally crucial for the evolution of switchgear.         The switchgear industry suffers from severe homogenization, with low-quality products proliferating unchecked through simple repetition, competing solely on price and cost while neglecting quality. This approach consumes vast material resources without regard for sustainability, prioritizing short-term compliance over long-term reliability.
2025/09/09
Marine Switchboard
Marine Switchboard Market Share Analysis and Development Trend Analysis
Conclusion: European players maintain short-term dominance in premium segments, but Chinese manufacturers are rapidly gaining ground through cost and scale advantages. Future competition will center on smart functionalities, green compatibility, and modular innovation, with technological agility determining market repositioning.
2025/07/17
Switchgear
The market share of Chinese switchgear exported to Indonesia
China holds 60-70% of Indonesia's switchgear imports, led by cost-competitive LV/MV products. Key drivers: Indonesia's power demand growth (6-7%/year) and infrastructure projects. Challenges include local content rules (TKDN) and certification. Growth areas: renewables and smart grids. Chinese firms advance via tech upgrades and localized production.
2025/07/16
Control-Switchgear
Chinese-Developed Intelligent Power Distribution Switchgear Debuts at Munich Event
Munich, Germany – From June 24th to 27th local time, the 27th Laser World of Photonics was held at Messe München. ShengLong Electric showcased its self-developed AI-iPanel, the world's first artificial intelligence power distribution switchgear, attracting significant attention from global professionals.
2025/07/15
technical knowledge More
Miniaturizing 36kV Switchgear
Challenges in Miniaturizing 36kV Switchgear
  The miniaturization of switchgear is a common demand in the IEC market. For instance, the standard dimensions for 13.8kV (17.5kV), 1250A switchgear are typically 600mm in width and 2100mm in height, while 3150A versions are generally only 900mm wide.
2025/11/21
Low-Voltage Switchgear
What are the common types of low-voltage switchgear?
For applications with limited budget, simple circuits, and no frequent changes, the fixed-mounted GGD is a cost-effective choice.         For applications with high requirements for supply continuity, frequent operation and maintenance, and a large number of circuits (e.g., Motor Control Centers (MCCs) in industrial plants, large commercial complexes), withdrawable types like GCK, GCS, or MNS are preferable.         For high-end projects or where specific brands are required, original series from international brands like ABB MNS, Siemens SIVACON, or Schneider Blokset are typically selected.
2025/11/14
Medium-Voltage-Switchgear
Type Testing of Medium Voltage Switchgear According to IEC Standards
Type testing of medium voltage switchgear in accordance with IEC standards may involve two scenarios: First, testing at domestic accredited testing stations in compliance with the IEC 62271 series standards, resulting in test reports that conform to IEC 62271. Second, testing at international STL (Short-Circuit Testing Liaison) testing stations according to IEC standards and STL guidelines.
2025/09/22
PV-Grid-Connected-Cabinet
Composition and Functions of a 400V PV Low-Voltage Grid-Connection Cabinet
A 400V PV Low-Voltage Grid-Connection Cabinet is a critical interface device that connects the photovoltaic (PV) power generation system to the low-voltage grid. It is a dedicated distribution panel integrating protection, monitoring, metering, and control functions. It is primarily composed of the following core components:
2025/09/11
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