⚡ Product Overview
KYN61-40.5 is an indoor metal-clad withdrawable AC switchgear for 40.5kV, 50Hz power systems. It is used in substations and industrial applications for power distribution, offering high reliability, safety, and frequent operation performance. The switchgear provides functions of control, protection, and monitoring.
Compliance Standards:
- GB/T 11022-1999
- GB 3906-1991
- DL 404-1997
🔍 Model Designation & Service Conditions
Model: KYN61-40.5 (Z)
K – Metal-enclosed | Y – Withdrawable type | N – Indoor installation | 61 – Design serial number | 40.5 – Rated voltage (kV) | (Z) – Vacuum circuit breaker
Normal Service Conditions:
- Ambient temperature: -15°C to +40°C
- Relative humidity: Daily average ≤ 95%, Monthly average ≤ 90%
- Altitude: ≤ 1000 m
- Seismic intensity: ≤ 8 degrees
- Environment: Free from corrosive/flammable gases, no severe vibration or significant pollution.
📊 Main Technical Parameters of the Switchgear
| Item |
Unit |
Value |
| Rated voltage | kV | 40.5 |
| Rated current | A | 1250 / 1600 / 2000 |
| Rated frequency | Hz | 50 |
| Rated short-time withstand current | kA | 20 / 25 / 31.5 |
| Rated peak withstand current | kA | 50 / 63 / 80 |
| Rated power frequency withstand voltage | kV | 95 (1 min) |
| Rated lightning impulse withstand voltage | kV | 185 |
| Rated short-circuit duration | s | 4 |
| Degree of protection | — | IP3X |
⚙️ Vacuum Circuit Breaker Technical Parameters
| Item |
Unit |
Value |
| Rated voltage | kV | 40.5 |
| Rated short-circuit breaking current | kA | 20 / 25 / 31.5 |
| Opening time | ms | 30 ≤ t ≤ 60 |
| Closing time | ms | 50 ≤ t ≤ 100 |
| Mechanical endurance | times | 10,000 |
| Degree of protection | — | IP43 |
🏗️ Foundation and Installation
- Electrical room height: ≥ 4500 mm
- Flatness of foundation frame: ≤ 1 mm per meter
- Fixing method: Bolted or welded to the foundation
- Approximate weight: 1800 kg per panel
- Operating aisle width: Single row ≥ 3000 mm, Double row ≥ 4000 mm
🏭 Advanced Production & Logistics
Modern production workshops and automated assembly lines ensure high reliability. All products are packed with export-standard wooden cases or protective materials for safe global transport.
❓ Frequently Asked Questions
What certifications do your products have?
Our products comply with IEC standards and have certifications such as ISO, CE, and CCC.
How do you ensure product quality?
We have strict quality control processes from raw materials selection to final factory inspection. All products are tested before shipment.
What is the typical delivery time?
Normally 15–30 days depending on the order quantity and specific customization requirements.
Can you provide installation guidance?
Yes, we provide comprehensive technical support including remote guidance or technical documentation for installation.
Which industries do you serve?
Our switchgear is widely used in power plants, industrial factories, real estate construction, infrastructure, and the new energy sector.
Do you support EPC project requirements?
Yes, we can supply complete electrical systems and customized power distribution solutions for EPC contractors.
Zago Electric
