Siemens MJ-5, Инструкция по установке и эксплуатации

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4 Setting Up the MJ-5 Control Panel
Siemens Industry, Inc. 35
4.8 Regulator Maintenance
—
The <MAINTENANCE> Menu
The information contained within the < MAINTENANCE >
menu should be used for information purposes only. All
voltage regulator maintenance should be completed as
described in the Maintenance section of the Siemens
Voltage Regulator Manual.
The <
MAINTENANCE > menu allows the user to enable
an algorithm which will approximate wear and tear on the
Tap changer contacts for Siemens Regulators. The menu
allows the user to choose a Tap Changer Type, indicate
presence of Balance winding and define the range of
regulation. The other items in this menu include items
which show statuses of the Tap changer contacts, and the
operations on the contact(s).
The statuses update based on the accumulated losses due to
wear and tear. The status are classified into EXCELLENT,
GOOD, WORN, and REPLACE. The Moving contacts
have a common status screen while the Stationary contacts
have one screen each.
The contact op counters update as operations are added on
the individual contacts
The first screen in the <
MAINTENANCE > menu is the
ConsOv screen which is a status screen, it shows the status
the most worn contact(s).
Each of the individual contacts’ status or operations may be
cleared by pressing the Cancel Reset button. If a user
wishes to clear all statuses and op counts at once then this
can be done by pressing Cancel-Reset key on the ConsOv
screen.
If the Maintenance approximation algorithm is disabled, all
statuses and contact op counts show “N/A”.. If the
MaintainRcrds? data item is changed to “Y” then the
algorithm is enabled and would update the statuses and op
counts.
The Maintenance menu is password protected by default.
The default password of “3333” must be entered before
changing settings or resetting any statuses and contact op
counters.
The last screen in the maintenance menu is the OP_DUR
screen. This screen indicates the last measured op counter
pulse duration in seconds which is useful when adjusting
the TapInPulse time for TapIn=Pulse under <Diagnostics>
(i.e. the Tap Chgr is set to Custom or GE).
The Maintenance menu also has a fast path key on the front
panel. Press this key to view the status and settings screens
of the Maintenance menu; repeat the key press to scroll
through the Maintenance menu.
4.9-The <DIAGNOSTICS> Menu
The < DIAGNOSTICS > menu includes the MJ-5
configuration items needed to the calibration and MJ-5
internal test items. It also includes time setting for Tap
operation and setting for non-Siemens regulators.
See Section 8 for information about the calibration items:
See Appendix P for Tap Tracking.
The <
DIAGNOSTICS> menu items:

U2 Cal: displays raw voltage of U

P2 Cal: displays raw voltage of P2

C Ca l: displays raw load current

R/LOnTime: maximum time to keep the tap
changer motor running before pausing for
R/LOffTime.

R/LOffTime: pause between tap changes for this
amount of time.

Fixed R/L On time: When in Auto mode, if this
setting is “Y”, motor stays on for exactly R/L On
time seconds.

TapChgT/O: if the control runs the tap changer
motor for R/LOnTime and no operations count
occurs, then after this many more seconds a Tap
Track Err OD alert is generated.

TapIn: defines the operations count signal input
line.

TapInType: defines the operations counter type.

TapInPulse: defines the minimum amount of time
that an operations count signal must be present in
order for the operations counter to increment
(applies to Pulse type operations counters only).

PreTapTime: the measure of load voltage before
tap change

PostTapTime: the measures of load voltage after
tap change

NeutralIn: defines the neutral signal input line.

NeutralCount: number of Neutral positions (for
LTC’s only).

PhaDeg: Displays raw value of phase angle. This
value will be used for diagnostic purposes to
determine if there is a shift in the current and if
that shift is causing false power flow detection.

CCInput: CCInput will show the status of Input 2
and 4 in back of terminal block.