PDF 파일 다운로드 - New Thinking Better Service by HANMAC
PDF 파일 다운로드 - New Thinking Better Service by HANMAC
PDF 파일 다운로드 - New Thinking Better Service by HANMAC
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System 8500<br />
MPS 854<br />
The System 8500 power supply program offers the Ultrastable Power Supply 854 specially<br />
designed for powering magnets in MRI applications.<br />
With this power supply we have achieved not only the ultimate regarding stability - the 0.1<br />
ppm class - but also introduced new standards regarding extremely low ripple and filtering<br />
technology.<br />
Major parts of the power supply 854 are constructed from standard modules of the system<br />
8500 power supply program. The modular concept is the industrial approach towards easy<br />
and fast service.<br />
The power supply can be delivered for either full current range or limited “window” with 1 ppm<br />
resolution. For sub ppm resolutions a separate control input port is available. The basic concept<br />
is designed for easy adaption to customer designed interfaces. The attached specifications<br />
describe the performance data of the power supply 854.<br />
If you are working in the field of MRI and have a need for ultrastable power supplies please<br />
consult Danfysik.<br />
We have the expertise in current stabilized power supplies and a continuously on-going development<br />
program will be your guarantee for a “state of the art” power supply for MRI equipment of<br />
tomorrow.<br />
The power supply features<br />
• Power range from 5-50 kW<br />
• Current range from 50 to 2000 A<br />
• 0.1 ppm stability class<br />
• Incorporates Ultrastab Current Transducer<br />
• Very low noise output<br />
• Very high immunity against EMI<br />
• Modular concept<br />
Applications<br />
• Resistive magnets for MRI<br />
• Callibration and reference current source<br />
• Ultrastable supply for spectrometers<br />
Danfysik A/S • Møllehaven 31 • DK-4040 Jyllinge • Denmark<br />
Tel. +45 4679 0000 • Fax +45 4679 0001 • danfysik@danfysik.dk • www.danfysik.com
Specifications<br />
DC Output ratings<br />
Power range<br />
Standard current range<br />
Voltage range<br />
: 5 - 50 kW<br />
: 50 - 2000 A<br />
: 5 - 200 V<br />
Performance<br />
All drift and regulation data are given for max. current output.<br />
Warm up time (cold start)<br />
Warm up time (from stand <strong>by</strong>)<br />
Drift<br />
Short term 3 min. (fwhm)<br />
Long term 8 hours (fwhm)<br />
: 60 min.<br />
: 15 min.<br />
: < 0.3 ppm<br />
: < 2 ppm<br />
Line regulation<br />
+/- 10% slow, T > 1 min. : < 0.1 ppm<br />
+/- 1% fast, T > 3 m sec. : < 0.1 ppm<br />
Load regulation<br />
+/- 10% resistance change : < 0.2 ppm<br />
Ripple<br />
AC Voltage ripple 50 - 60 Hz<br />
: < 5 mVpp<br />
300 - 360 Hz : < 15 mVpp<br />
Output filtering<br />
Filter design according to customer specifications<br />
Temperature coefficient<br />
Ambient<br />
Cooling water<br />
DC output isolation resistance<br />
Output polarity<br />
Current setting resolution<br />
either<br />
With total current range (100% window)<br />
or<br />
With window current range (6% window)<br />
Current readback resolution<br />
Standard<br />
Optional<br />
: 0.2 ppm/°C<br />
: 0.05 ppm/°C<br />
: > 1 Mohm<br />
: Unipolar<br />
: 18 bit (4 ppm)<br />
: 16 bit (15 ppm)<br />
: 8 bit (3906 ppm)<br />
: 16 bit (15 ppm)
Standard Operator Control Panel<br />
Current setting <strong>by</strong> knob control with a digital bit generator. Three resolution ranges for the control of 1/10, 1/1000, and<br />
1/100,000 per rev. of full scale.<br />
LCD display - with push-button selection of:<br />
Preset current (%)<br />
Actual current (%)<br />
Output voltage (%)<br />
Transistor passbank voltage<br />
Interlock status text string<br />
Regulation system status readback (Ready LED)<br />
Control system status readback:<br />
Polarity (LED)<br />
Local remote (LED)<br />
Local operator control panel, removeable<br />
Optional Operator Control Panel<br />
Designed according ti customer specifications<br />
Standard Computer Interface<br />
RS 232C/RS 422<br />
Optional Computer Interface<br />
IEEE-488 (GPIB)<br />
Customer specified interface<br />
Steel Cabinet<br />
Dimensions<br />
Operator Control Panel<br />
W x H x D<br />
: ≤ 12 kW, 615 x 800 x 1400 mm<br />
≤ 24 kW, 615 x 800 x 1800 mm<br />
≤ 50 kW, 1230 x 800 x 1800 mm<br />
: 19 inch x 88 x 75 mm<br />
Temperature ratings<br />
Operating<br />
Ambient : 15 to 35°C<br />
Water : 15 to 35°C<br />
Storage : -20 to 50°C<br />
Main cooling<br />
: Water<br />
FACT.Sys8500.MPS854.0605.A • Specifications are subject to change without notice.<br />
Cooling water pressure:<br />
Minimum diff.<br />
Max. absolute<br />
Test pressure<br />
Flow 5 - 50 kW<br />
AC Input<br />
Control Voltage,<br />
: 3 bar<br />
: 12 bar<br />
: 20 bar<br />
: Figures are very dependent on load conditions, window<br />
size and output power<br />
single phase, 50-60 Hz, standard : Europe 220 V (+/- 10%) & USA 115 V (+/- 10%)<br />
available on request<br />
: 110 V & 240 V<br />
Main voltage,<br />
3 phase, 3 or 4 wire, 50-60 Hz, standard : Europe 380 V (+/- 10%) & USA 480 V (+/- 10%)<br />
available on request<br />
: 208 V & 415 V & 565 V
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