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Outdoor three-phase air switches<br />
GridGuard three-phase <strong>outdoor</strong> air switch<br />
Robust construction<br />
−−Resilient, higher BIL silicone rubber insulators<br />
(porcelain available)<br />
−−Steel phase base construction (¼") meets<br />
Federal Specification BR-C-271<br />
−−Reverse loop silver plated copper j<strong>aw</strong> contacts<br />
−−All ferrous components are hot dip galvanized<br />
−−Tinned copper terminal pads<br />
−−Standard quality featu<strong>res</strong> include ¼" phase base<br />
boxframe construction, 3 /8" dead-end connectors,<br />
stainless steel brass bearing rotating shafts,<br />
silver-plated copper reverse loop contacts and<br />
busbar grade copper blades that contribute to<br />
an extended life, even in harsh environments<br />
Reliable design<br />
−−Looped contact design improves contact<br />
integrity<br />
−−Interrupter contact operating speed is<br />
independent of switch operating speed, ensuring<br />
full loadbreak capability<br />
−−All copper construction is grade C<strong>11</strong>0, providing<br />
high conductivity and strength<br />
−−Self-<strong>res</strong>etting interrupter<br />
−−Advanced shunt design eliminates contact pitting<br />
−−Unitized construction: aluminium, steel, or fibre<br />
glass<br />
−−Visible break al<strong>low</strong>s for safe operation and<br />
maintenance<br />
−−Maintenance-free stainless steel and brass<br />
bearing mechanism<br />
−−RUS approved<br />
Application<br />
−−Line switching: load splitting (parallel or loop<br />
switching), load dropping, and associated<br />
charging currents<br />
−−Transformer switching: load dropping, including<br />
associated magnetizing currents<br />
−−Cable switching: load switching (parallel or<br />
loop switching), load dropping, and associated<br />
charging currents<br />
Technical data 15 kV 27 kV 38 kV<br />
Nominal voltage 14.4 21 34.5 kV 14.4 21 34.5<br />
Maximum voltage 17 29 38 kV 17 29 38<br />
BIL <strong>11</strong>0 150 200 kV <strong>11</strong>0 150 200<br />
Continuous current<br />
Fault close<br />
Momentary current<br />
Insulator type<br />
Interrupter type<br />
Crossarm type<br />
Mounting configurations<br />
Control mechanism<br />
*Ice breaking ¾" (manual operation).<br />
**Mechanical Tested up to 5,000 cycles (open/close).<br />
600 A (ANSI), 900 A (IEEE)*<br />
900 A (ANSI)<br />
1200 A (ANSI)**<br />
15 kA rms-asym: 5 x manual operation<br />
20 kA rms-asym: 3 x manual operation<br />
30 kA rms-asym: 2 x manual operation<br />
600 A: 40,000 A-rms 10 cycles/25,000 A-rms 3 sec<br />
900 A: 51,000 A-rms 10 cycles/32,000 A-rms 3 sec<br />
1200 A: 70,000 A-rms 10 cycles/44,000 A-rms 3 sec<br />
Silicone<br />
Porcelain<br />
Expulsion tube: 2,500 open and close operations<br />
Vacuum bottle: 5,000 open and close operations<br />
Galvanized steel: 2,000 lbs/phase<br />
Fibreglass: 1,000 lbs/phase<br />
Horizontal (upright, extra clearance, or underarm)<br />
Vertical (phase over phase)<br />
Riser (vertical)<br />
Delta (pole top)<br />
Hookstick<br />
Reciprocating control rod<br />
Torsional control rod<br />
Motor operator<br />
ABB Medium Voltage Products | Outdoor three-phase air switches 15
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