Over/Underfrequency protection
The control includes six elements for underfrequency and
overfrequency protection. A fixed time delay ranging from
0 to 3600 seconds in .01 second increments is available
for both over and underfrequency. A frequency restoration
function, enabled or disabled by the user, is provided to
allow the recloser to automatically close should frequency
return to within configured settings for a user-settable time.
Over/Underfrequency Protection is included as part of each
protection profile.
Over/Undervoltage protection
The control includes three stages of single-phase and
three-phase under voltage tripping. The control also includes
single-phase and three-phase overvoltage tripping. Both
over and undervoltage functions include a pick-up setting
and a time delay setting ranging from 0 to 3600 seconds
in0.1 second increments.
Sync check
Sync Check is a permissive close feature used to qualify any
close command. When enabled, all close commands are
processed through the sync check arbitor. If all sync check
parameters are satisfied, a close will be permitted.
Sync check allows closing for any combination of dead/hot
bus/line, and to perform anticipatory closing for a hot bus/
hot line condition by calculating slip and anticipating the
mechanism closing delay. In addition to the anticipatory close
calculation, the sync check system performs verification
of line and bus voltage magnitudes and frequencies to
determine that they are within pre-determined ranges, and
that the angular difference between the two systems is
also within the pre-determined range. For a hot bus/hot line
close, where there is no slip between the systems, the
sync check system allows permissive closing after the two
systems are within frequency and voltage limits, and the
angular difference between the systems has been within the
allowable limits for a pre-determined time.
The Sync Check function requires the computation of the
source-side frequency. In the System Configuration dialog in
ProView NXG software, the Connected PT’s (Wye) must be
properly configured (regardless of whether Phantom Phase
is enabled) for this source-side frequency computation to
occur. Refer to Service Information S280-104-2 Form 4D
Microprocessor-Based Recloser Control Programming Guide
for additional information.
Sync Check functionality includes the following applications:
Hot Line/Hot Bus Closing; Dead Line/Hot Bus Closing; Hot
Line/Dead Bus Closing; and Dead Line/Dead Bus Closing.
Sync Check Parameters include the following configurable
settings: Voltage Angle; Mechanism Operating Delay; Static
Angle Delay; Dead Threshold; Live Threshold; Upper Voltage
Limit; Lower Voltage Limit; Upper Frequency Limit; Lower
Frequency Limit; and Failed to Close Timer.
Data profiler
A fully configurable data profiler is available which allows
the user to collect information of the selected inputs by
sampling data at user-programmable intervals. These time-
stamped values can then be viewed to determine weekly
load profiles, daily harmonic disturbances or hourly voltage
fluctuations. The number of days of information the data
profiler can provide depends upon configuration parameters.
Refer to Service Information S280-104-2 Form 4D
Microprocessor-Based Recloser Control Programming Guide
for additional information.
Manual close time delay
Manual Close Time Delay provides a delay from the time
that the manual CLOSE button is pushed to the time the
manual close operation is performed.
The delay is programmable from 0 to 60 seconds in
1second increments. A programmed delay value can be
overridden for immediate closing by pressing the CLOSE
button a second time.
An active Manual Close Time Delay can be canceled by
pressing the TRIP/LOCKOUT button.
The default setting has the feature disabled (0 seconds).
The CLOSED LED blinks to indicate a close delay is
active and a countdown-to-close timer will appear on the
LCDdisplay.
Removable inserts
Removable inserts are included with the control design for
customization of specific protection requirements. Inserts
are available for the status indicator LEDs and the operator
panel function keys. Refer to Using Removable Inserts
section in this manual for additional information.
An electronic label template is included on the ProView
NXG application software CD and, once installed on your
PC, can be accessed through the following default address:
C:\Program Files\Cooper\ProView NXG\Form 4D\Form 4D
Control Customizable Inserts.doc
Lamp test
Lamp test feature tests all front panel LEDs of the Form
4D recloser control. This test can be performed in View,
Operate, Modify, or Admin mode.
There are two ways to perform lamp test at the HMI:
Enter function code 88, “Test LED’s” and press
“CONFIRM”.
or
Menu > Diagnostics > Test LED’s and press “CONFIRM”.
LEDs present on the front panel shall blink for three times
when the CONFIRM button is pressed.
ote:N “Test LEDs” function can only be performed
throughHMI.
11OPERATION INSTRUCTIONS MN280049EN September 2017
Form 4D Microprocessor-based pole-mount recloser control installation and operation instructions
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