Hubbell Type D6, Type D7 warranty 541,717 6,818,846 6,946,607, Type AR Switch Ratings, Description

® ® U.S. Patents 6,207,919; 6,215,082;

14A-2		6,281,460; 6,409,135; 6,459,053;
	POWER SYSTEMS, INC.
		6,541,717; 6,818,846; 6,946,607.

Type AR (Automation-Ready) Switch

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

Description

The Hubbell unitized Type AR switch is a distribution-level, loadbreak, gang-operated side-break switch designed to meet not only today’s needs but well into utilities’ future of distribution automation. Designed for nominal system voltages of 14.4kV and 25kV three- and four-wire systems and 34.5kV grounded-wye systems. The Type AR switch is available with a variety of options, and in ratings for present and planned requirements.

To minimize field installation time, the Type AR switch is pre-assembled, adjusted and mounted on a crossarm. Instal- lation time is even faster for a Type AR switch with the hook stick-operation option.

Horizontal Mounting

(Torsional

down-the-pole control shown)

Inverted Mounting

Variations and Configurations

The Type AR switch is available in five basic configura- tions:

•Horizontal •Vertical •Phase-over-Phase •Delta •Inverted

All feature clockwise opening and are operable by torsional or reciprocating controls as well a hookstick operation option (full-length down-the-pole control or crossarm-mounted hook stick-operation control).

1.Full-length down-the-pole controls consist of Torsional swing-handle operation for Horizontal, Delta and Inverted switches and Reciprocating pump-handle operation for Verti- cal and Phase-over-Phase switches. (Standard Duty or Heavy Duty conrols are available for Vertical and Phase-over-Phase switches.) Switch open or close positions locking provisions are provided.

2.Crossarm-mounted hook stick-operation controls provide pull-to-open / pull-to-close switch with maximum target hook stick accessibility.

Features:

All three phase switches feature a four-link overtoggle mecha- nism to assure locked closed blades, mechanical advantage for easier open and close operation, and "snap" feedback to the operator.

(Hook stick control shown)

Vertical Mounting

(Reciprocating down-the-pole control shown)

Phase- over- Phase Mounting

(Reciprocating down-the-pole control shown)

Delta Mounting

(Hook

stick control shown)

Type AR Switch Ratings

Nominal Voltage/Lightning Impulse Withstand		.... 14.4 kV/110 kV, 25 kV/150 kV or 34.5 kV grounded-wye/150 kV
Continuous Current		900 amperes
Interrupting Current		900 amperes
Peak Withstand Current		65,000 amperes peak
Short Time Withstand Current	3 sec	25,000 amperes, symmetrical
Fault Making: 1 time		25,000 amperes, asymmetrical
3 time		20,000 amperes, asymmetrical
Dead-ending:		8,000-lb. working load
Ice Breaking:		3/4-in. thick, opening and closing

SEPTEMBER 2007 HUBBELL / CHANCE COMPANY – CENTRALIA, MISSOURI