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RF-2 disconnect switches provide highly dependable operation for sectionalizing or isolating service. The RF-2 is a rotating-insulator, vertical-break air switch. During opening and closing, the switch blade rotates in or out of the contacts, which provides a highly efficient ice-breaking action. The silver surfaced stationary contacts actually lock the blade in place by increasing pressure on the switch blade during momentary current flow. Constant pressure is maintained by insulated stainless steel back-up springs. Current is diverted away from primary contacts by an arcing horn which eliminates contact pitting and erosion. The RF-2 disconnect switch is available in voltage ratings from 15kV through 230kV for currents from 600 through 3000 amperes. The horn-gap-type is capable of interrupting magnetizing currents and relatively low charging current. |
Click
on photo for graphical representation  |
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Rotating Blade Action |
| Pitting is eliminated and ice is cleared as contacts are firmly engaged and locked | |
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Various Positions of Operating Mechanism |
| One pole of three-pole switch has adjustable crank permitting mechanism bearings to be arranged in any position | |
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Counter Balance Assembly |
| Provides uniform opening and closing stroke and reduced stress on switch mechanism parts | |
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Increased Conductivity, Reduced Wear |
| Copper switch blade and silver plated contact surfaces | |
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Mounting Versatility |
| Vertical, underhung, or upright mounting available | |
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| RF-2 Vertical-Break Air Disconnect Switches | ||||||||
| Rated
Max Voltage (kV RMS) |
RATED WITHSTAND VOLTAGE | CURRENT RATINGS IN AMPERES | INSULATOR NEMA Technical Reference | SWITCH BOLT CIRCLE | ||||
| Impulse 1.2x50µs Wave kv Crest |
60 hz kV RMS | Continuous
@ 60 Hertz |
(1) Momentary |
(2) 4 Second |
Post | |||
| Wet 10 Seconds | Dry One Minute | |||||||
| 15.5 | 110 | 45 | 50 | 600 1200 2000 3000 |
40000 61000 100000 120000 |
25000 38125 62500 75000 |
TR
205 TR 205 TR 225 TR 255 |
3
" 3 " 5 " 5 " |
| 25.8 | 150 | 60 | 70 | 600 1200 2000 3000 |
40000 61000 100000 120000 |
25000 38125 62500 75000 |
TR
208 TR 208 TR 227 TR 227 |
3
" 3 " 5 " 5 " |
| 38.0 | 200 | 80 | 95 | 600 1200 2000 3000 |
40000 61000 100000 120000 |
25000 38125 62500 75000 |
TR
210 TR 210 TR 231 TR 231 |
3
" 3 " 5 " 5 " |
| 48.3 | 250 | 100 | 120 | 600 1200 2000 3000 |
40000 61000 100000 120000 |
25000 38125 62500 75000 |
TR
214 TR 214 TR 267 TR 267 |
3
" 3 " 5 " 5 " |
| 72.5 | 350 | 145 | 175 | 600 1200 1600 2000 |
40000 61000 70000 100000 |
25000 38125 43750 62500 |
TR
216 TR 216 TR 278 TR 278 |
3
" 3 " 5 " 5 " |
| 121.0 | 550 | 230 | 280 | 600 1200 1600 2000 |
40000 61000 70000 100000 |
25000 38125 43750 62500 |
TR
286 TR 286 TR 286 TR 286 |
5
" 5 " 5 " 5 " |
| 145.0 | 650 | 275 | 335 | 600 1200 1600 2000 |
40000 61000 70000 100000 |
25000 38125 43750 62500 |
TR
288 TR 288 TR 288 TR 288 |
5
" 5 " 5 " 5 " |
| 169.0 | 750 | 315 | 385 | 600 1200 1600 2000 |
40000 61000 70000 100000 |
25000 38125 43750 62500 |
TR
291* TR 291* TR 291* TR 291* |
5
" 5 " 5 " 5 " |
| 242.0 | 900 | 385 | 465 |
1200 1600 2000 |
61000 70000 100000 |
38125 43750 62500 |
TR 304* TR 304* TR 304* |
5 " 5 " 5 " |
| 242.0 | 1050 | 455 | 545 |
1200 1600 2000 |
61000 70000 100000 |
38125 43750 62500 |
TR
312* TR 312* TR 312* |
5 " 5 " 5 " |
| * These insulators are for horizontal upright installation only. Contact Josyln for additional information. |
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Ordering Information | ||
| 1 | Specify Voltage | ||
| 2 | Specify Amperes | ||
| 3 | Specify Mounting Orientation | ||
| 4 | Specify Options | ||
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Options and Accessories |
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FB-4 Grounding Switches |
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JMO Motor Mechanism |
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Home | About Us | Products | Library | Contact Us Joslyn Hi-Voltage - 4000 E 116th Street, Cleveland, Ohio 44105 USA Email: T&B Contact InformationCopyright © 2001 Joslyn Hi-Voltage. All rights reserved. |
