Series PD-420 IC Breaker

The PD-420 delivers unmatched transient recovery voltage performance for EHV networks. Using advanced gas-insulated switching, this unit mitigates thermal stresses to ensure peak reliability under extreme fault loads.

Technical Parameters

Dielectric

HTV silicone composite housing with optimized non-linear creepage profile for polluted environments

Primary Rating

Nominal operating voltage: 420 kV AC for EHV transmission systems

Fault Rating

Short-circuit breaking capacity: 63 kA (symmetrical) at 50 Hz

Arc Medium

Dual-volume SF6 gas interruption system for rapid arc extinction and TRV control

Actuator Method

Stored-energy spring bellows mechanism for fast, reliable open/close operations

Reliability

Galvanic Separation

Features a verified physical air gap for maintenance lockouts, preventing capacitive leakage currents.

Plasma Damping

High-efficiency thermal ionization control facilitates immediate arc extinction for asset protection.

Network Uptime

Rapid sub-cycle interruption prevents system-wide sympathetic tripping during severe transient events.

Environmental

Hot-dip galvanized chassis provides NEMA 4X equivalent durability in maritime or sub-zero climates.

Technical Quotation

Specify your substation parameters for the PD-420. Our engineering department will analyze your distribution architecture and provide a comprehensive proposal within 24 hours of receiving the technical data.

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