Indoor switch disconnector H 22

Product catalog summary

Overview: The document provides detailed technical specifications and operational guidelines for the DRIESCHER Indoor Switch-Disconnector H 22. It covers various types of switch-disconnectors, their advantages, energy storage mechanisms, arc extinction processes, and technical data.

Specifications: The switch-disconnectors are three-pole devices with rated voltages of 12 kV, 24 kV, 36 kV, and 38.5 kV, and rated currents of 630 A and 1250 A. They comply with DIN VDE 0670, part 301 / IEC 60265-1 standards.

Types of Switch-Disconnectors: The document describes different types of switch-disconnectors, including H 22 EK (without trip-free release), H 22 EA (with trip-free release), and H 22 SEA (with trip-free release and additional features like cross rails and HV HBC fuse holders).

Operating Conditions: Designed for normal operating conditions as per IEC 60697, class "Minus 5 Indoor", with ambient temperature peaks at 40°C and average 24-hour values at 35°C. Adjustments are necessary for altitudes over 1000 m due to reduced insulating power.

Arc Extinction: The arc extinction process involves a closed arcing chamber with pressure and expansion sections. Extinguishing plates and gases effectively cover the entire current range without requiring maintenance.

Main Advantages: The switch-disconnectors offer absolute operational reliability, visible isolating distance after load disconnection, convenient dimensions, easy operation, and high operating frequency with minimal maintenance.

Energy Storage Mechanism: The EK mechanism uses a single torsion spring for quick-make and quick-break operations, while the EA mechanism uses two torsion springs for trip-free operations. Actuation can be manual or motor-operated.

Technical Data: Detailed technical data includes rated voltage, frequency, current, peak withstand current, short-time current, making and breaking currents, and insulation levels. The document also provides part numbers and dimensions for various configurations.

Additional Features: Options for mounting earthing switches, mechanical interlocking, and release coils are available. The document emphasizes the importance of following transportation, mounting, and service instructions.

Catalog excerpts

DIN VDE 0670, part 301 / IEC 60265-1 content:2 Types of Switch-Disconnectors, Operating conditions Օ3 Main advantages, Energy storage mechanism, Arc extinction 4 Additional possibilities of mounting, Technical data Օ5 Switch-Disconnectors H 22, 630 A, Type EK 6 Switch-Disconnectors H 22, 630 A, Type EA (refer also to 791). Օ7 Switch-Disconnectors H 22, 630 A, Type SEA Type H 22 EK - without trip-free release Օ Type H 22 EA - with trip-free release * 8 Switch-Disconnectors H 22,1250 A,Type EA For many years DRIESCHER - indoor load-breakswitches have guaranteed an excellent position in switchgear...

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Indoor switch disconnector H 22

Indoor switch disconnector H 22

Catalog excerpts

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