Mark VI Circuit-Switchers

Introduction

Mark VI Circuit-Switcher offers the latest in interrupter technology. It features a 31.5-kA fault-interrupting rating and 3-cycle interrupting time, with simultaneity of less than 1/4 cycle. No shunt-trip device is needed. Mark VI is significantly lighter than the Mark V Circuit-Switcher, is easier to install, and has reduced maintenance requirements.

Mark VI Circuit-Switcher utilizes the same rugged integral disconnect as the Mark V, making it perfect for use with pre-insertion inductors.

Optional features include:

• Pre-insertion Inductors. With the addition of pre-insertion inductors, Mark VI Circuit-Switcher is ideal for capacitor-bank applications, combining switching, protection, and transient overvoltage control in one device. Pre-insertion inductors limit inrush current and overvoltage at the capacitor-bank bus, limit phase-to-phase switching-surge overvoltages at remote transformers, and control overvoltages on long, open-ended lines and on the user’s utilization-voltage bus.
• S&C Mounting Pedestals. Dramatically reduce installation time with S&C’s easy-to-install mounting pedestals.
• Integral Current Transformers. Integral CTs provide the sensing for the capacitor-bank control device. There’s no need for a separate structure for the CTs.