Setting the phase angle -8, 4 setting the phase angle – AMETEK CW-M User Manual
Page 40
Elgar CW-M Series
4-8
M161570-01
4.4 SETTING THE PHASE ANGLE
For multiphase operation, set switches 9 through 12 for the desired phase
angle as specified below, in Table 4
Table 4
–2. Phase Angles
Leading Phase Angle
Switch 9
Switch 10
Switch 11
Switch 12
0
ON
ON
ON
ON
30
ON
OFF
ON
ON
45
OFF
ON
ON
ON
60
OFF
OFF
ON
ON
90
ON
ON
ON
OFF
120
ON
OFF
ON
OFF
135
OFF
ON
ON
OFF
150
OFF
OFF
ON
OFF
180
ON
ON
OFF
ON
210
ON
OFF
OFF
ON
225
OFF
ON
OFF
ON
240
OFF
OFF
OFF
ON
270
ON
ON
OFF
OFF
300
ON
OFF
OFF
OFF
315
OFF
ON
OFF
OFF
330
OFF
OFF
OFF
OFF
The CW-M Series front panel display for B Phase and C Phase units will
display the leading phase angle in degrees that the DIP switches have
been set for. For a typical 3 phase set-up, the CW-M Units and phase
angle relationships are:
The A Phase at 0°, or reference phase. Switches 9 through 12 should be
ON for the A Phase Master CW-M Unit to set 0°.
The B Phase is set for a +240° or 240° leading phase angle (same as a -
120° or 120° lagging phase angle) relative to A Phase at 0° Reference.
This would have Switch 9 OFF, Switch 10 OFF, Switch 11 OFF, and
switch 12 ON.
The C Phase is set for a +120° or 120° leading phase angle (same as a -
240° or 240° lagging phase angle) relative to A Phase at 0° Reference.
This would have Switch 9 ON, Switch 10 OFF, Switch 11 ON, and switch
12 OFF.
In this fashion, the phase rotation/sequence will be A-B-C-A-B-C etc.