8 OPERATION AND INSTALLATION INSTRUCTIONS MN280075EN July 2018
Form 6 microprocessor-based rack-mount recloser control
Control features
The Form 6 recloser control offers numerous standard
features and accessories that allow the user the utmost
flexibility applying the recloser control.
Control security
The Form 6 recloser control has multiple customer-
programmable security codes to limit control programming
and viewing function access to authorized personnel. The
front panel Human-Machine Interface (HMI) includes a
user-selected security code to access the settings. Plus, the
ProView interface software has it’s own security levels for
multiple-user access.
Refer to Service Information S280-70-4 (ProView 4.X.X) or
S280-70-21 (ProView 5.X.X) Form 6 Control Programming
Guide for additional information.
Protection profiles
Four protection profiles capable of fully specifying control
operation are standard in the control. Each protection profile
includes the following as a minimum:
Overcurrent Protection
Over/Undervoltage Protection
Over/Underfrequency Protection
Directional Protection
Hot Line Tag Functionality
Sync Check
Sensitive Earth Fault Protection
Sequence Coordination
Operation Settings
Time current curves
Time-current curves are available for numerous functions,
including fast and delayed operations for phase, ground, and
negative sequence protection. Each time-current is selected
from a defined fifty curves which can be further customized
by the user. The time-current curves are also selected from
a graphical TCC Editor II to visualize any modifications prior
to configuring the control.
The time-current curves include the following modifications
for phase, ground, and negative sequence protection:
Time Multiplier with a range of 0.1 to 25 in .1 increments.
Time Adder with a range of 0 to 30 seconds in .01
second increments.
Minimum Response Time with a range of 0.1 to 1
seconds in .001 second increments.
High Current Trip multiplier with a range of 1 to 32
multipliers in increments of 0.1.
High Current Trip Time Delay with a range of 0.01 to .150
seconds in .001 second increments.
Time Dial Reset co-efficient with a range of .1 to 30
seconds in 1 second increments.
Sequence coordination
Sequence Coordination eliminates nuisance tripping through
trip coordination. It allows the control to step through
selected operations in the operating sequence without
tripping. The number of Sequence Coordination advances
is programmable from one to three operations to provide
trip coordination with a downline recloser. This feature is
independently selectable for each protection profile.
Cold load pickup
The control includes a Cold Load Pickup feature to prevent
the control from tripping while energizing non-fault system
loads. This feature has independently programmable
minimum trip value time-current curve, reclose interval,
and number of independent operations to lockout for
each protection profile. Cold Load Pickup also includes
TCC Multipliers, TCC Adders, Minimum Response Time,
Time Dial Reset, and High Current Lockout. Also, direct
values, not multiples of minimum trip, are provided for high
current lockout.
Fast trips disabled
The control includes a Fast Trips Disabled feature to modify
protection, so that all trip operations use the programmed
TCC2. This feature is independently selectable for each
protection profile. All trip operations will time on TCC2.
Typically, TCC1 is fast and TCC2 is delayed. So, as an
example, the control will change it’s sequence from 2 fast
and 2 delayed operations to 2 operations on TCC2 when
Fast Trips Disabled is active.
High current lockout
The High Current Lockout feature will automatically lockout
the control on the selected operation when current
exceeds a programmable level. The active trip numbers for
the lockout is selectable for phase, ground, and negative
sequence. This feature is independently selectable for each
protection profile.
Sensitive ground/earth fault operation
The control has a Sensitive Ground/Earth Fault Trip feature
that provides tripping of the recloser after a programmable,
definite time for ground currents below normal ground
minimum trip levels. The feature has programmable
operations to lockout and reclose intervals independent of
the ground settings. This feature is independently selectable
for each protection profile.
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