S&C IntelliCap Plus Troubleshooting Manual page 17

Using IntelliLink Software to Locate Problems
When the phase angle is between 90 degrees and 270 degrees, 180 degrees is subtracted.
The power factor and kvars are then calculated and displayed. Under these conditions, the
Current Flow Direction field shows "Reverse."
A properly configured control indicates "Reverse" only when the line current has
reversed direction due to abnormal switching.
Reclose Block
After opening, the capacitor bank does not reclose for 5 minutes. This allows the capacitors
to discharge. When the reclose block is in effect, this field shows the time remaining before
the bank can be switched in.
Date
This field shows the present date in the control.
Control Time
This field shows the present time in the control.
1-Phase Current (var controls only)
This is the current (in amps), measured by the current sensor and scaled using the
Single-Phase Full-Scale Current setpoint.
Current Flow Direction (var controls only)
When the control is properly configured and power is flowing through the circuit in the
normal direction, this field displays "Normal." If unusual circuit switching conditions cause
the direction of power flow to reverse, the value changes to "Reverse." When the phase angle
is outside the +/- 90 degree range, the control displays a "Reverse" message in the Current
Flow Direction field and subtracts 180 degrees from the phase angle.
Power kVA (var controls only)
This is the present kVA level measured at the location of the current sensor.
Power kW (var controls only)
This is the present kW level measured at the location of the current sensor.
Power kvar (var controls only)
This is the total kvar level measured at the location of the current sensor, calculated as
3 times the single-phase kvars. This assumes a balanced 3-phase system.
Power Factor (var controls only)
This is the power factor calculated as the cosine of the value in the Corrected Phase
Angle field on the Metering screen. Lagging phase angles are represented as values
between 0 and 90 degrees. Leading phase angles are represented as values between 0 and
-90 degrees.
Adjusted 3-Phase kvars (var controls only)
This is the kvar level that is used by the control when operating in var mode. This value is
different from the Measured 3-Phase kvars value if the bank is switched in and one of
the following is true:
• The current sensor is on the source side of the bank and current flow is reversed.
• The current sensor is on the load side of the bank and current flow is normal.
Number of Operations
This field shows the total number of switching cycles completed since installation of the
control. The counter updates when the bank switch is opened. This counter is reset to zero when
control software is reloaded (not updated).
Control Strategy
This field shows the control strategy for the present season.
S&C Instruction Sheet 1023-550 17