SPECIAL FEATURES
VARI-AMP
TM
RANGE AND CURRENT RATINGS AVAILABLE
±10% ±8 3/4% ±7 1/2% ±6 1/4% ±5%
10-02.5-050.0 200 220 240 270 320
10-02.5-075.0 300 330 360 405 480
10-02.5-100.0 400 440 480 540 640
10-02.5-167.0 668 668 668 668 668
10-02.5-250.0 1000 1000 1000 1000 1000
10-02.5-333.0 1332 1332 1332 1332 1332
11-02.5-416.3 1665 1665 1665 1665 1665
10-05.0-050.0 100 110 120 135 160
10-05.0-100.0 200 220 240 270 320
10-05.0-167.0 334 367 401 451 534
10-05.0-250.0 500 550 600 668 668
10-05.0-333.0 668 668 668 668 668
11-05.0-416.3 835 835 835 835 835
10-07.6-038.1 50 55 60 68 80
10-07.6-057.2 75 83 90 102 120
10-07.6-076.2 100 110 120 135 160
10-07.6-114.3 150 165 180 203 240
10-07.6-167.0 219 241 263 296 351
10-07.6-250.0* 328/347 361/381 394/416 443/468 525/555
10-07.6-333.0* 437/463 481/509 524/556 590/625 668/668
10-07.6-416.3* 546/578 601/636 656/668 668/668 668/668
10-07.6-500.0 656 668 668 668 668
10-07.6-667.0 875 875 875 875 875
11-07.6-889.0 1167 1167 1167 1167 1167
10-13.8-069.0 50 55 60 68 80
10-13.8-138.0 100 110 120 135 160
10-13.8-207.0 150 165 180 203 240
10-13.8-276.0 200 220 240 270 320
10-14.4-072.0 50 55 60 68 80
10-14.4-144.0 100 110 120 135 160
10-14.4-288.0 200 220 240 270 320
10-14.4-333.0 231 254 277 312 370
10-14.4-432.0 300 330 360 405 480
10-14.4-576.0 400 440 480 540 640
11-14.4-720.0 500 550 600 668 668
10-14.4-833.0 578 636 668 668 668
10-19.9-100.0 50 55 60 68 80
10-19.9-200.0 100 110 120 135 160
10-19.9-333.0 167 184 201 226 268
10-19.9-400.0 200 220 240 270 320
10-19.9-667.0 335 368 402 452 536
11-19.9-833.0 418 459 502 565 668
Units with catalog number starting with:
10 are self cooled
11 are forced-air cooled
Regulators can be modified at factory for 50
Hz operation with appropriate de-rating of
voltage.
*Capable of carrying current corresponding
to rated kVA when operated at 7200/12470
volts ground wye.
OPERATION AT LESS
THAN
RATED VOLTAGE
JFR regulators may be operated at less
than the voltage for which they were de-
signed. All system voltages for which
control system taps have been provided
are shown on the nameplate. When this
is to be accomplished it may be neces-
sary to reconnect particular leads at the
upper 19-pin terminal block as illustrated
on page 5. When operating the regulator
at reduced voltage it must be noted that
the regulator carries a maximum current
rating which rules regardless of the
voltage (see table at right). It may
therefore be necessary to operate the
regulator at less than its nameplate kVA
rating.
Page 14
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