User Manual – Rev BE AMETEK Programmable Power
MX Series 42
2.7.3 Output Noise Spectrum
The MX series is a switching power supply and as such will have a certain amount of
switching noise at its output. While the overall RMS noise is specified, the specific
noise spectrum will differ slightly from unit to unit. The information provided in this
section is for reference only.
The output noise can be reduced by using one or more external filters. A suitable
filter is the P/N 7003-424-1 (Error! Reference source not found.) available as an
option. Attenuation at the 250 kHz ripple frequency is 20 dBuV. The output voltage
drop at 800 Hz full load is less than 1Vrms.
Typical output noise spectrum for a standard MX45-3Pi in three-phase mode
operating at 400 Hz is shown in Error! Reference source not found. for phase A
and Neutral. The same output with the use of the optional filter is shown in Error!
Reference source not found.. For connection information, refer to section 3.14.
MX Filter Specifications
(Model 7003-424-1)
Low Pass Filter Three phase WYE, four wire. (A, B, C and Neutral)
Frequency range DC, 16 Hz - 800 Hz
Max Voltage 250 Vrms Line to Neutral / 440 Vrms L-L
Phase Current 125 Arms per phase maximum.
Impedance Voltage drop at 800 Hz, 125 A is less than 1 Vrms.
Attenuation 20 dBuV at 250 KHz .
Enclosure type
Cooper B-Line P/N 16126 SC NK
Dime n s i on s ( W x D x H)
Un i t : 16” x 12” x 6” / 406 mm x 305 mm x 152 mm
Shipping: 30” x 25” x 11” / 760 mm x 635 mm x 280 mm
We i g h t
Net : 28 lbs / 12.7 Kg
Shipping: 40 lbs / 18.2 Kg
Operating Temp:
0° to +40° C. / +32° to +104° F.
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