AMETEK MX Series Rev: AY - Manual (Page 35)

User Manual – Rev AY AMETEK Programmable Power
MX Series 35
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 (Figure 2-12) 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 Figure 2-13 for phase A and Neutral. The same output with the use of the optional filter is
shown in Figure 2-14. For connection information, refer to section 3.14.
MX Filter Specifications
(Model 7003-424-1)
Type
Low Pass Filter Three phase WYE, four wire. (A, B, C and Neutral)
Capability
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.
Performance
Attenuation 20 dBuV at 250 KHz.
Physical
Enclosures type Cooper B-Line P/N 16126 SC NK
Dimensions (W x D x H) Unit: 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
Weight Net: 28 lbs / 12.7 Kg
Shipping: 40 lbs / 18.2 Kg
Operating Temp: 0° to +40
°
C. / +32° to +104° F.