How to Procure the Switchgear You Need

Switchgear controls, protects, and isolates electrical equipment, ensuring safe and efficient power distribution. It includes devices like circuit breakers and switches, vital for preventing damage and maintaining power flow.

HIGH VOLTAGE

High voltage switchgear ensures safe, efficient power distribution, offering reliability, durability, and advanced technology for critical energy systems worldwide.

LOW VOLTAGE

Low voltage switchgear provides reliable control and protection, ensuring efficient power distribution and safety for industrial and commercial applications.

OTHERS

We offer customizable switchgear solutions and OEM services, tailoring designs to meet specific client needs with precision and reliability.

1. Technical Specifications

Ensure the switchgear’s specifications match your transformer and power system:

Rated Voltage: Aligns with the transformer’s high or low side.
Rated Current: Supports normal and peak load requirements.
Short-Circuit Current (Isc): Withstands the grid’s maximum short-circuit current (kA).
Frequency: Matches system frequency, typically 50 Hz or 60 Hz.

2. Switchgear Type

Choose the type based on application and installation environment:

High-Voltage Switchgear:
- Used on the transformer’s high-voltage side (e.g., 10 kV, 35 kV systems).
- Includes breakers like vacuum or SF6 circuit breakers for protection.
Low-Voltage Switchgear:
- Used on the transformer’s low-voltage side (e.g., 380V, 690V).
- Includes motor control centers (MCCs) or distribution cabinets.
Indoor/Outdoor:
- Indoor switchgear suits substations or control rooms.
- Outdoor switchgear requires IP54+ protection against water, dust, and corrosion.

6. Installation & Space

Size & Layout: Choose fixed or drawer-type switchgear based on site space. Drawer types simplify maintenance but cost more.
Ventilation: Ensure efficient heat dissipation to avoid overheating.

3. Functions & Components

Ensure essential functions and components are included:

Circuit Breakers: High-performance main switches for reliable operation.
Isolators: Ensure safety during maintenance.
Relay Protection: Guards against overloads and short circuits.
Busbar System: Copper or aluminum to handle load demands.
Monitoring Instruments: Include meters for current, voltage, and power factor, plus smart monitoring systems.

4. Compatibility & System Coordination

Transformer Connection: Match interface, capacity, and protection features.
Device Coordination: Ensure protective devices align with system timing and tripping characteristics.

5. Safety & Standards

Comply with international standards such as:
- IEC Standards (e.g., IEC 62271-200).
- ANSI/IEEE Standards (e.g., C37 series).
IP Rating: Indoor: IP30; Outdoor: IP54+.
Fireproof designs and mechanical interlocks to prevent misuse.

7. Maintenance & Reliability

Modular Design: Simplifies maintenance and future upgrades.
Reliability: Choose reputable brands for long-term stability.
Spare Units: Consider backup units to improve power reliability.

8. Supplier & Service

Choose suppliers with strong technical support, providing:

Technical documents (e.g., wiring diagrams, manuals).
Installation guidance and training.
After-sales service and warranties (minimum 2 years recommended).

9. Budget & Lead Time

Balance procurement, installation, and operational costs.
Confirm delivery schedules align with project timelines.

10. Energy Efficiency & Smart Features

Opt for switchgear with smart monitoring to track load, voltage, and current in real-time.
Choose energy-efficient, low-loss designs to reduce operating costs over time.