KYN61-40.5 Digital SwitchgearMedium-Voltage Switchboard
The KYN61-40.5 armored metal-enclosed switchgear is designed for 40.5kV single-busbar power systems, serving as a reliable solution for power reception, distribution, control, and protection.
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Robust switchgear with full internal arc resistance and AG3 (intensity 8) seismic rating. Features five-prevention interlocking, with an internal air clearance of ≥300mm, optimized cooling for ensuring safety. Compliant with major grid standards, authorized by national testing institutions.
Core Advantages & Features
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Metal-Clad Safety DesignThe robust metal-clad enclosure prevents fault propagation and ensures operational safety.
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High–Low Voltage IsolationComplete separation between high- and low-voltage compartments guarantees safety and system integrity.
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Double-Sided Maintenance AccessCompact structure with dual-side maintenance design enhances accessibility and service efficiency.
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Modular Circuit Breaker DesignSimplified and reliable modular breaker design ensures durability and extended operating life.
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Five-Protection Interlocking SystemComprehensive interlocks prevent operational errors and support closed-door operation.
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Arc Fault ResistanceDesigned to withstand internal arc faults up to 31.5kA/1s for enhanced protection.
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Superior Insulation ClearanceMaintains insulation distances ≥300mm for safe and stable operation.
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High-Altitude PerformanceOperates reliably at altitudes up to 3500m with composite insulation.
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Certified ManufacturingFully compliant with Chinese and international standards, successfully passing all type tests.
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Flexible Switch CompatibilitySupports vacuum circuit breakers and SF₆ circuit breakers for diverse applications.
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Intelligent OperationEquipped with motorized breakers, grounding switches, and wireless temperature sensors for real-time monitoring and one-touch sequential control.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Insulation voltage | 40.5 kV |
| Rated insulation voltage | 40.5 kV |
| Rated power frequency withstand voltage | 95 kV/1min |
| Rated lightning impulse withstand voltage | 185 kV |
| Rated frequency | 50 Hz |
| Rated short-time withstand current (4s) | 40 kA |
| Rated peak withstand current | 100 kA |
| Rated busbar current | 4000 A |
| Rated branch busbar current | 4000 A |
| Internal arc fault withstand current | 31.5 kA/1s |
| IP rating | IP41 |
| IK rating | IK10 |
| Dimensions (width × depth × height, excluding front and rear doors) | 1400mm (1680mm) × 2750mm (2800mm/3050mm/3200mm) × 2600mm |
| Weight | 1000 kg - 2000 kg |
Product Documents
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Product Brochure
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KYN61-40.5 Metal-Clad Withdrawable Switchgear
2025-11-25
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