Siemens 21-115532-001 manual Operation At Less Than Rated Voltage, Special Features

SPECIAL FEATURES

Page 14

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.

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.

VARI-AMPTMRANGE AND CURRENT RATINGS AVAILABLE

	±10%	±8 3/4%	±7 1/2%	±6 1/4%	±5%
		220
10-02.5-050.0	200		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
		110
10-05.0-050.0	100		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
		55
10-19.9-100.0	50		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