Hubbell Type D7 14A-3, Available Options, Single Phase of Type AR Switch, Feature­- Advantage

®

POWER SYSTEMS, INC.

Type AR (Automation-Ready) Switch

14.4kV, 25kV or 34.5kV  900 Amperes Continuous/Interrupt

Feature­— Advantage —

®

14A-3

•Automation-ready design • Compatible with today’s D/A environment by adding a motor operator and RTU of your choice, or upgrade in the future

•	900-amp continuous and	• Meets present and future operation requirements
	interruption current rating
• Four-link overtoggle		• Mechanical advantage reduces operating torque to the lowest level
	mechanism	in the industry to date
		• Overtoggle feature assures blades are closed and gives “snap”
		feedback to the operator
•	Hook stick operation	• Minimizes installation time, reduces possible vandalism, eliminates
	capability	control adjustments
•	Unitized, pre-assembled	• Minimizes installation time and eliminates control adjustments
construction
• Four mounting arrangements		• Meets various utility installation requirements

Interrupter

5

6

3

2

Available Options

8

4

1

7	Single Phase of Type AR Switch
	(1)  Hot-rolled steel base formed into a channel and galvanized
	per ASTM A153.
	(2)  Hot-rolled crank lever provides high strength and corro-
	sion resistance. Galvanized per ASTM A153.
	(3)  Delrin® bushing coupled with a cast aluminum rotating
	shaft eliminates the need for lubrication during the life of
	the switch.
	(4)  Insulators available in 2.25" bolt circle, porcelain or
	polymer.
	(5)  High-conductivity copper with phosphorous-bronze back-
	up springs and copper-tungsten fault-closing tips provide reli-
	able contact areas. Silver-to-silver current-transfer points.
	(6)  Blade formed from hard-drawn, high-conductivity copper
	for maximum current carrying capability.
	(7)  Interrupter provides current interruption without exter-
	nal arc or flame. High-strength polyurethane material for
	strength, weatherability and UV resistance. Bolted tongue-
	in-groove mounting ensures positive alignment.
	(8)  Polycarbonate ice shield helps protect contacts from ice
	build up.

Hook stick Operation  The Type AR switch can be operated by a hook stick operation. This option eliminates control pipe sections down the pole and their attendant adjustment during installation and maintenance.

Extra Pipe  The extra pipe section includes guide, coupling, and all hardware for attachment.

Extension Links  When deadending to the AR switch, exten- sion links must be used to give needed clearance. The end clevis has a slotted hole for inserting the machine bolt with- out having to remove the extension bar. The extension links supplied are 14 inches long, hot-dip galvanized, and REA accepted. Catalog No. C2070112; six required per switch.

Surge Arrester Brackets Three brackets can be supplied for mounting six surge arresters (utility supplied) for over- voltage protection.

Sensor Brackets Extension Brackets can be supplied, or added to the AR Switch, to allow for the additon of line volt- age/current sensors.

Crossarm Braces Crossarm braces may be specified as an option.

ESP™ polymer Insulators  The distribution insulators, 2.25- inch bolt circle, are available in a U.S.-manufactured ESP polymer design. They are light weight, durable, and they offer long-term performance in every type of environment.

Terminal Connectors  Catalog No. ATC1343, fortified cadmi- um-plated aluminum parallel-groove clamp can be supplied with switches. Six per switch.

Cable Range:

Minimum No. 2 solid copper [0.258 inch (6.55 mm)] to maximum 500 kcmil copper [0.811 inch (20.60 mm)].

Control Insulator  One 150 kV LIW (Lightining Impulse With- stand - BIL) polymer insulator in vertical control pipe.

Captive Hardware  Two stainless-steel spline bolts pressed into each terminal pad, nuts and lockwashers included.

HUBBELL / CHANCE COMPANY – CENTRALIA, MISSOURI SEPTEMBER 2007