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I.L.15.01.T.K
.
Effective June 2000
b) Normal
Source
Underfrequency
(Optional Feature)
c) Normal
Source
Overvoltage
(Optional
Feature)
d) Normal
Source
Overfrequency
(Optional Feature)
Standard Option – Phase Reversal
MP1-E Only
The alarm contact will change state if the
controller detects a phase reversal condition
between the normal and emergency
sources. The controller will also inhibit
transfer on this condition.
Standard Option - Plant Exerciser
This option provides for automatic test
operation of the generator. The interval is
fixed at once per week with duration equal to
the programmed engine test time (ERT).
Two optional modes of plant exercising are
available:
a) No Load Exercise
b) Load Exercising with failsafe
If desired, this option can be disabled by
choosing “No” at the “Plant Exerciser”
prompt in the menu. Also if “---“ is chosen
as the test day, the engine will not be
exercised.
Optional Feature 8 - Pushbutton Bypass
of Time Delays (PBNE/PBEN)
Enables the user to bypass TDNE or TDEN
timer during a test or exercise. Pressing the
external pushbutton shall cause the transfer
switch to transfer to the normal and/or
emergency source without a time delay.
Three optional modes of bypassing are
available:
a) PBNE – Pushbutton Bypass Time Delay
Normal to Emergency
b) PBEN – Pushbutton Bypass Time Delay
Emergency to Normal
c) PBG – Pushbutton Bypass Time Delay
Global (Both TDNE & TDEN)
Optional Feature 10 - Preferred Source
(PFR SRC) MP1-E Only
Permits the selection of either source (1 or
2) as the preferred source. The preferred
source is the source that the MP1-E
controller looks to for availability so that the
transfer switch may remain in this position
and supply the load with this source.
The preferred source will be considered the
same as the “normal” source and the
alternate source will be considered the same
as the “emergency” source. All time delays
(e.g. TDNE, TDEN) will be a function of this
feature and follow the preferred source.
Three optional modes of Preferred Source
Selection are programmable:
PS1 – Source 1 is selected as preferred.
Source 2 is the alternate source.
PS2 – Source 2 is selected as preferred.
Source 1 is the alternate source.
PS0 – No Source is selected as preferred
Note:
If the preferred source feature is not
programmed, Source 1 will default as the
preferred source and Source 2 will default
as the alternate source.
If no sources are selected as preferred, the
transfer switch will remain on any source
that is available and meets the programmed
set-point criteria. Moreover, in this mode of
operation, the transfer switch will only
transfer from Source 1 to Source 2 or from
Source 2 to Source 1 if a failure occurs on
the source that the transfer switch resides
on. It should be noted that the preferred
source contact is disabled when there is no
preferred source selected. However, if the
Area protection option is enabled and
prompted, the controller will react by
transferring to the appropriate source as
described in the Area Protection feature.
Optional Feature 26D - Test/Area
Protection
This feature provides for a remote customer
contact. This option is always enabled in the
controller, but as an option, terminal block
connections may be provided for a remote
signal.
Closure of this contact will cause the
controller to initiate a transfer to Source 2 if
the transfer switch is in Source 1 position.
Opening of this contact will cause the
controller to initiate a transfer to Source 1 if
the transfer switch on Source 2 position.
This feature is typically used if it is known
that there may be problems with the Normal
Source such as an impending lightning
storm, or the local utility performing
maintenance in the area. The switch will
