Figure 55 Source Setpoints; Table 14 Set Point Parameters - Liebert POWER PROTECTION STATIC TRANSFER SWITCH User Manual

To configure the set points for each source:
1. Select SOURCE 1/2 SET POINTS from the User Settings dialog box.
The Source 1/2 Set Points dialog is displayed.

Figure 55 Source setpoints

2. Select 1 to configure the settings for Source 1.
3. Configure the settings using the keypad or dialog box that is displayed when you touch a button.
Table 14 Set Point Parameters
Button
Fast UV Setting (%)
Slow UV Setting (%)
Slow UV detection delay
OV Setting (%)
OV Detection Delay
I-PK Xfer Lockout
4. Select 2 for Source 2.
5. Configure the settings, as described in step 3.
6. Select SAVE to keep the settings for both sources.
The Set Points dialog is closed and the User Settings dialog is displayed.
7. Select MANUAL MAX XFER PHASE ANGLE.
A keypad is displayed.
This setting configures the maximum allowed phase difference between the sources and applies to
all manual transfers as well as any auto retransfer.
a. Configure this setting with a range of +/- 1-30 degrees.
The default setting is +/-15 degrees and the resolution is 1 deg.
b. Select OK to save the setting.
The setting is now displayed in the adjacent field in the User Settings dialog box.
Range Default
-10 to -30% of Nominal -20%
voltage rating
-5 to -20% -10%
1-60 cycles 5 cycles
+5% to +20% +10%
1-255 cycles 3 cycles
0 – 3.0 multiplied by 2.5 * Unit
the unit current rating. Current Rating
91
STS2 Touch Screen Display
Comments
Set in increments of 1%.
Set in increments of 1%.
Units: Line Cycle
Set in increments of 1%.
Units: 1/4 Line Cycle
I-peak xfer lockout detection point.
Units: Amps RMS. Select the HI or
LO buttons to configure your setting.