Metal-clad switchgear for 3–12kV
KYN28A-12 switchgear South Africa
The KYN28A-12 switchgear is a metal-clad, air-insulated switchgear system designed for power plants, substations, industrial and mining enterprises. Built in compliance with IEC 298 and GB 3906 standards, it delivers safe power acceptance, distribution, monitoring and protection across critical medium voltage networks.rshest operating conditions.
KYN28A-12 switchgear South Africa
Safe and Flexible Power Distribution for Demanding Environments
Medium voltage systems require safe isolation, high fault tolerance, flexible wiring configurations, and dependable circuit breaker performance — all while meeting strict international standards.
KYN28A-12 (GZS1) provides:
- Rated voltage options: 3.6 / 7.2 / 12 kV
- Rated current: 630A to 4000A
- Short-circuit withstand up to 40kA
- Withdrawable vacuum circuit breaker (ABB VD4, VS1, Schneider EV12)
- Full compartment segregation for enhanced safety
- IP4X enclosure protection (IP2X when doors open)
The cabinet design includes four isolated compartments:
- Circuit breaker compartment
- Busbar compartment
- Cable compartment
- Relay & meter compartment
This ensures improved safety, operational clarity, and ease of maintenance.
KEY BENEFITS
Built for Operational Confidence
1. Enhanced Operator Safety
Compartmentalized structure with pressure-relief devices and interlocking systems prevents incorrect operation and limits internal arc propagation.
2. Flexible Installation Options
Supports overhead and cable configurations, wall-mounted or back-to-back installation, with 30+ primary wiring solutions available.
3. High Fault Handling Capability
Rated short-circuit breaking up to 40kA and 100kA peak withstand capacity depending on configuration.
4. Long Service Life & Durability
Mechanical endurance up to 10,000 operations and corrosion-resistant aluminum-zinc coated enclosure.
CORE TECHNICAL SNAPSHOT
The technical data below defines the electrical ratings, insulation levels, short-circuit withstand capacity, mechanical endurance, and environmental operating conditions of the KYN28A-12 switchgear. These parameters confirm compliance with IEC and GB standards while ensuring safe fault interruption, stable performance under load, and dependable operation in medium voltage distribution systems across industrial and utility applications.
Download the complete KYN28A-12 (GZS1) technical documentation to review
Technical Overview
| Parameter | Value |
|---|---|
| Rated Voltage | 3.6 / 7.2 / 12 kV |
| Rated Frequency | 50 Hz |
| Rated Current | 630 – 4000 A |
| Short-Circuit Breaking Current | 20 / 25 / 31.5 / 40 kA |
| Rated Peak Withstand | 50 – 100 kA |
| Insulation Level (1 min PF) | 42 kV |
| Lightning Impulse Withstand | 75 kV |
| Mechanical Endurance | 10,000 Operations |
| Protection Degree | IP4X (IP2X open compartment) |
| Operating Temperature | -10°C to +40°C |
| Altitude | ≤1000m (standard) |
APPLICATIONS
KYN28A-12 (GZS1) is widely used in:
Power generation plants
Ensures safe and reliable medium voltage distribution between generators, transformers, and auxiliary systems. The high short-circuit capacity and stable fault interruption performance support continuous plant operation and minimize downtime risks.
Utility substations
Designed for incoming and feeder applications within distribution substations, the KYN28A-12 provides dependable switching, protection, and system control while meeting international medium voltage standards.
Industrial facilities
Delivers stable power distribution for manufacturing plants and heavy industry where uninterrupted operation is critical. The flexible configuration options allow integration with diverse load requirements and transformer systems.
Mining operations
Built to handle demanding electrical environments, the switchgear supports reliable power supply in mining sites where dust, load fluctuations, and high fault levels require durable and robust protection systems.
Oil & gas infrastructure
Provides secure and dependable power distribution in high-risk industrial environments. The compartmentalized design and strong fault handling capacity enhance operational safety across refineries, processing plants, and pipeline facilities.
Commercial distribution systems
Supports medium voltage power distribution in large commercial buildings, data centers, and infrastructure projects, ensuring stable load management and efficient system protection.
KYN28A-12 switchgear South Africa
Download the complete KYN28A-12 (GZS1) technical documentation to review:
- Detailed vacuum circuit breaker parameters
- 30+ primary wiring configurations
- Structural diagrams and compartment layout
- Installation and operation guidelines
- Protection and interlock systems
- Environmental and service condition requirements