LOCATION OF J15 & J14 WITH BOARD ORIENTED AS SHOWN
J16
FIGURE 2-15. RELAY MODULE
Load Monitoring Options
TO J23 ON DIGITAL BOARD
Controllers can include a load current and power sensor (Current Module) and current transformers installed on the load lines (see Figure 2-11). The control senses the all the load currents (including the neutral current), three load voltages, and three power factor angles. The control calculates the real load power and the apparent load power.
CT1
CT2
CT3
CT4
The load current sensing feature is active when the Current Module is installed and connected to the Digital Module.
J41
J40
The control issues a warning when the neutral current exceeds a user specified value between 100 and 150% of the rated current during a specified time period between 10 and 60 seconds. The warning threshold (100−150%) and time delay (10−60 sec) are set only with the InPower service tool.
2-12
FIGURE 2-16. CURRENT MODULE CAUTION To avoid system faults, false alarms and fault messages, do not remove P40 from the Current Module while the CTs are energized unless the secondaries are shorted. For more information, see page 6-30.