UDQ-40.5 Digital SwitchgearMedium-Voltage Switchboard
The UDQ-40.5 is an intelligent, metal-clad withdrawable switchgear for 40.5kV indoor power distribution systems. It is used for receiving and distributing power in demanding environments such as power plants and industrial complexes.
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As an independent product model refined from the Eaton UR7 cabinet type, it inherits excellent craftsmanship while being fully optimized for Chinese standards and the latest State Grid specifications, ensuring superior compatibility and performance.
Core Advantages & Features
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Wide CompatibilitySupports leading circuit breaker brands.
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High Electrical CapacityWithdrawable switchgear rated up to 4000A with 40kA breaking capacity.
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Arc Fault CertificationSuccessfully passed IAC AFLR 31.5kA/1s type test for arc resistance.
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TÜV CertifiedMeets 60Hz operational requirements under German TÜV standards.
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Anti-Accident DesignConforms to State Grid "18 Anti-Accident Measures" with ≥300mm insulation spacing and no insulation boards inside.
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High-Altitude Insulation PerformanceLow partial discharge (<3pC) and long creepage distances ensure operation up to 3000m.
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Enhanced Insulation StrengthStainless-steel reinforced bushings eliminate corona discharge and reduce insulation aging.
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Smart Monitoring SystemIntegrates digital data acquisition, temperature and status monitoring, and health assessment functions.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Rated voltage | 40.5 kV |
Rated power frequency withstand voltage | 95 kV/1min |
Rated lightning impulse withstand voltage | 185 kV |
Rated frequency | 50 Hz / 60 Hz |
Rated short-time withstand current | 25~40 kA/4s |
Rated peak withstand current | 63~100 kA |
Busbar rated current | 630~4000 A |
Internal fault arc withstand current | 31.5 kA/1s |
Weight | 1500~2400 kg |
Protection level | Enclosure IP4X, compartment IP2X, IK10 |
Product Documents
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Product Brochure
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Product Certification
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UDQ-40.5 Metal-Enclosed Removable Switchgear
2025-11-25
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UDQ-40.5-4000-31.5_TüV_Type Test Report of Dielectric_Temperature-Rise and Short-Circuit Performance
2025-12-19
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UDQ-40.5-1250-31.5_TüV_Type Test Report of Internal Arc Performance
2025-12-19
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UDQ-40.5-1250-31.5_TüV_Type Test Report of Dielectric_Temperature-Rise and Short-Circuit Performance
2025-12-19
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