What is a Sectionalizing switch?
A sectionalizer is an automat ed switching device that is intended to isolate faults, and is typically used in conjunction with an upstream recloser. The sectionalizer counts the number of operations of the upstream recloser to determine if the fault is temporary or permanent.
What is a Kearney switch?
Kearney regulator and current transformer bypass switches feature sequenced, make-before-break operation in both 600 A and 1200 A ratings, minimizing the possibility of operator error. …
What is a pad mounted switchgear?
PSI/II Pad-Mounted Switchgear is designed to meet the switching and isolating requirements of electrical distribution systems with 15 pre-engineered switching configurations. There are UL®-listed standard units available to cover almost every situation – radial feed, loop feed and manual primary-selector switching.
What is a Lbor switch?
The “LBOR-II™” switch is a manually operated, two position, load make or break, oil immersed rotary switch. The LBOR-II switch is designed for use with distribution transformers (pad mounted or submersible) and self-contained distribution switchgear.
What is a Sectionalizing device?
A sectionalizer is a protective device that automatically isolates a faulted section of line from the rest of the distribution system. A sectionalizer should not be confused with a recloser; it does not interrupt fault current.
What is auto Sectionalizing?
Definition: A self-contained circuit-opening device that automatically opens the main electrical circuit after sensing and responding to a predetermined number of successive main current impulses.
What is a Vista switchgear?
Vista switchgear can accommodate any combination of up to six bus taps, load-interrupter switches, or fault interrupters. The load-interrupter switches provide three-pole live switching of 600-ampere or 900-ampere three-phase circuits.
What does PME stand for switchgear?
The principles of Protective Multiple Earthing (PME)
What is a four position switch?
4-Way Switches Four-way switches are used to control lighting from three or more locations. When the switch is in the up position, the current can flow through two terminals.
What is load break switch?
A load break switch is a disconnect switch that has been designed to provide making or breaking of specified currents. These switches are used to de-energize or energize a circuit that possesses some limited amount of magnetic or capacitive current, such as transformer exciting current or line charging currents.
Can Sectionalizers open under fault current?
Since sectionalizers have no capacity to break fault current, they must be used with a backup device that has fault current breaking capacity.