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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 from AMETEK 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 MX15 operating at 400 Hz is shown in Error!
Reference source not found. for phase 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
Low Pass Filter
Frequency range
M ax V oltage
Phase Current
Impedance
A ttenuation
Enclosures type
Dimensions (W x D x H)
W eight
Operating Temp:
28
MX Filter Specifications
(Model 7003-424-1)
Type
Three phase W Y E, four wire. (A , B, C and Neutral)
Capability
DC, 16 Hz - 800 Hz
250 V rms Line to Neutral / 440 V rms L-L
125 Arms per phase maximum.
V oltage drop at 800 Hz, 125 A is less than 1 V rms.
Performance
20 dBuV at 250 K Hz.
Physical
Cooper B-Line P/N 16126 SC NK
16" x 12" x 6" / 406 mm x 305 mm x 152 mm
Unit:
Shipping:
30" x 25" x 11" / 760 mm x 635 mm x 280 mm
Net:
28 lbs / 12.7 K g
Shipping: 40 lbs / 18.2 K g
0° to +40° C. / +32° to +104° F.
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