Horizontal double break disconnector Type eDB, up to 420 kV
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HIGH VOLTAGE PRODUCTS Horizontal double break disconnector Type eDB, up to 420 kV © • Minimized contact resistance • Easy and quick erection • Low friction design for smooth operation • Ice breaking capacity • Strong rotary pedestals • Minimal maintenance

— ABB offers a wide range of reliable and energy efficient disconnectors to meet the requirements of different sites and network conditions. The disconnectors range from 72.5 kV to 420 kV. ABB disconnectors are designed as per IEC 62271-102 and IEC 62271-1 standards.

Applications Regulations 05 Maximum reliability and minimal maintenance 06 Technical data Main dimensions (mm) Series installation

— Disconnectors from ABB ABB HV Disconnectors are in operation across the world in extreme and adverse conditions for decades, providing maintenance-free service with the highest benchmarks for operational reliability. — Electric sub-station Applications A mechanical device for providing isolation of power equipment from the network, a disconnector is suitable for switching very small currents or where no significant change in voltage occurs across the terminals. The option of earthing sections of power systems can be made available by providing each disconnector pole with one or two...

02 Fixed contact and terminal pad of 1600 A eDB Minimized contact resistance (energy efficient solution) The current carrying aluminium conductors have no joints to minimize circuit resistance. No external springs in contact fingers for maximum reliability The contact fingers of the moving contacts of disconnector type eDB are designed from special conducting material and without external springs for increased reliability. Easy and quick erection The current carrying conductors and rotary pedestals are designed for easy adjustment and alignment. Low friction design for smooth operation...

HORIZONTAL DOUBLE BREAK DISCONNECTOR PRODUCT BROCHURE Technical data 03 145 kV eDB disconnector Rated normal current (Ir) Rated short-time withstand current, rated duration of short circuit (Ik,tk) Rated peak withstand current (I ) Basic insulation level Power frequency withstand voltage for 1 minute To earth and between poles kV 140 Across the isolating distance Lightning impulse withstand voltage Across the isolating kVp 375 distance Switching impulse withstand voltage To earth and between poles kVp - Across the isolating distance

04 Linkages with spherical bearings 05 Bearing on frame assembly The disconnector and earthing switch are operated via independent operating mechanisms. The operating energy from the operating mechanism of the disconnector is transmitted via operating rod to the rotary pedestal. The three phases of the disconnector are connected by gang operating linkages for three phase operation. During opening and closing operation, the current path, mounted on rotary insulator rotate through an angle of approximately 76°. Operating mechanism All disconnectors can be supplied by manual or motor operated...

HORIZONTAL DOUBLE BREAK DISCONNECTOR PRODUCT BROCHURE The disconnectors are delivered in following assemblies -lower part with rotary pedestals and operating rod, current path, support insulators and operating mechanism. As all mechanical adjustments are carried out in the factory, only mounting of the assemblies, installation of the coupling rods between the poles, connection of the high-tension leads and the electrical connection leading to the operating mechanisms is required at the site. Stud bolts are provided to compensate rapidly and exactly any inaccuracies in insulator position...

— ABB India Limited High Voltage products Maneja, Vadodara 390 013, India Phone: +91-265-2638930 Email: pt-exports.inabb@in.abb.com © Copyright 2019 ABB. All rights reserved. Specifications subject to change without notice. 1HDB050024-YN, Rev D 09/2017 Three-Column Rotary Disconnector Type eDB