AMETEK MX15 Series - Manual (Page 30)

User Manual – Rev M California Instruments
MX15 30
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 2-9) 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 MX45-3Pi in three phase mode operating at 400 Hz
is shown in Figure 2-10 for phase A and Neutral. The same output with the use of the optional
filter is shown in Figure 2-11. For connection information, refer to section 3.14. The MX15 and
MX45 use the same amplifier so results will be similar.
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.