PRODUCT PREVIEW
Transformers
Project-specific power transformation
Wafr 5 / 15 / 27 kV Metal-Clad Switchgear provides safe, reliable and flexible medium-voltage power distribution for utility, industrial, mining, data-centre and infrastructure applications.
The switchgear incorporates drawout vacuum circuit breakers within grounded, compartmentalized metal-clad enclosures. Major primary components including circuit breakers, main bus, cable terminations and instrumentation are segregated by grounded metal barriers.
Configurations are available for new installations, facility expansions, utility interconnections, generator systems and replacement of aging medium-voltage equipment.
| Parameter | Standard Ratings |
|---|---|
| Equipment classes | 5 / 15 / 27 kV |
| Typical system voltages | 4.16 / 12.47 / 13.2 / 13.8 / 24.9 kV |
| Frequency | 60 Hz |
| Phases | 3 |
| Main bus continuous current | 630 / 1200 / 2000 / 3000 / 4000 A |
| Breaker continuous current | 630 / 1200 / 2000 / 3000 / 4000 A as applicable |
| Short-circuit rating | 25 / 31.5 / 40 / 50 kA |
| Breaker technology | Vacuum |
| Breaker configuration | Drawout |
| Main bus material | Copper |
| Ground bus | Continuous copper |
| Control voltage | 125 Vdc typical |
| Arc-resistant construction | Available |
| Indoor configuration | Standard |
| Outdoor configuration | Available |
Ratings are selected according to system voltage, continuous load, available short-circuit current and project requirements.
Circuit Breakers
Drawout vacuum, 630 to 4,000 A as applicable
Bus
Copper main bus with continuous copper ground bus
Arc-Resistant
Type 2 accessibility, plenums, remote racking and operation
Installation
Indoor standard; outdoor available
Control Voltage
125 Vdc typical
Product Composition
The switchgear provides separate grounded metal compartments for:
This compartmentalized construction improves personnel safety, equipment isolation, inspection and maintainability.
Product Features
Arc-resistant configurations are available and tested in accordance with IEEE C37.20.7. Depending on project requirements, configurations may include:
The specific arc-resistant accessibility type, fault-current rating and arc duration are stated on the project-specific equipment documentation.
Wafr switchgear supports numerical protection systems from recognized protection-relay manufacturers. Available functions include:
Certified and tested to applicable requirements including:
