Basler BE1-25/79TR User manual

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Publication: 9 2787 00 990
Revision: B 07/95

i
W A R N I N G !
To avoid personal injury or equipment damage, only
qualified personnel should perform the procedures
presented in this manual.
INTRODUCTION
This manual provides information concerning the operation of BE1-
25/79TR Sync-Check Reclosing Relays. To accomplish this, the
following information is provided.
>
>
General Information
>
>
Functional Description
>
>
Installation Information
>
>
Calibration and Testing Procedures

ii
CONFIDENTIAL INFORMATION
OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FOR
CONFIDENTIAL USE, SUBJECT TO RETURN ON REQUEST, AND WITH THE
MUTUAL UNDERSTANDING THAT IT WILL NOT BE USED IN ANY MANNER
DETRIMENTAL TO THE INTEREST OF BASLER ELECTRIC COMPANY.
First Printing: October 1994
Printed in USA
July 1995
It is not the intention of this manual to cover all details and variations
in equipment, nor does this manual provide data for every possible
contingency regarding installation or operation. The availability and
design of all features and options are subject to modification without
notice. Should further information be required, contact Basler
Electric Company, Highland, Illinois.
BASLER ELECTRIC, BOX 269 HIGHLAND, IL 62249 USA
PHONE [phone] FAX [phone]

iii
CONTENTS
Section 1 GENERAL INFORMATION 1-1
Description......................................... 1-1
Capabilities ........................................ 1-1
Reclosing ...................................... 1-1
Sync-Check..................................... 1-1
Voltage Monitor .................................. 1-1
Tripping........................................ 1-1
Control Inputs ................................... 1-2
Enable Inputs ................................... 1-2
Timers......................................... 1-2
Indicators....................................... 1-2
Communications................................. 1-2
TimingFunctions.................................... 1-3
Control Inputs ................................... 1-3
Reclosing ...................................... 1-3
Tripping........................................ 1-4
Outputs ........................................... 1-5
Control......................................... 1-5
Alarm.......................................... 1-5
Application......................................... 1-5
General ........................................ 1-5
ReclosingExample............................... 1-5
Bus D or Transformer T1 Faults and Clears ........... 1-9
Bus D or Transformer T1 Faults and Fails to Clears ..... 1-9
Bus E or Transformer T2 Faults and Fails to Clears ..... 1-9
Model Numbers .................................... 1-10
Specifications ..................................... 1-11
Section 2 CONTROLS AND INDICATORS 2-1
Section 3 FUNCTIONAL DESCRIPTION 3-1
General ........................................... 3-1
BlockDiagramAnalysis .............................. 3-1
Output/Magnetics Board ........................... 3-1
Input/Logic Board ................................ 3-1
Power Supply ................................... 3-1
Modes of Operation .................................. 3-3
SettingsMode................................... 3-3
StatusMode .................................... 3-4
Reclosing Functional Description ....................... 3-5
High Speed Reclose .............................. 3-5
Parallel ........................................ 3-5
RestorePower .................................. 3-5
LineTest ....................................... 3-5
Sync-CheckFunctionDescription....................... 3-6
Sync-Check..................................... 3-6
Voltage Difference ............................... 3-7

iv
CONTENTS - Continued
CONTENTS
Section 3 FUNCTIONAL DESCRIPTION - Continued
Voltage Monitor .................................. 3-7
Slip Frequency Difference ......................... 3-9
TrippingFunction,PowerFail .......................... 3-9
ControlFunctions ................................... 3-9
Counter Enable .................................. 3-9
DrivetoLockout ................................. 3-9
DrivetoReset................................... 3-9
TimingFunctions.................................... 3-9
MasterTimer.................................... 3-9
ResetTimers................................... 3-10
LockoutTimer.................................. 3-10
RecloseTimers................................. 3-10
HSRTimer .................................... 3-10
Sync-CheckTimer .............................. 3-10
PFTimer ...................................... 3-10
CloseTDTimer................................. 3-11
LossOfPotentialTimer .......................... 3-11
SelectionFunctions................................. 3-11
HSRSync ..................................... 3-11
Start52b ...................................... 3-11
Communications ................................... 3-11
General ....................................... 3-11
RS232-C Format ................................ 3-11
Serial Port Connections and Configurations .......... 3-12
SerialCommunication ........................... 3-13
StartingCommunication .......................... 3-13
Main Menu and Activities ......................... 3-14
Section 4 INSTALLATION 4-1
General ........................................... 4-1
OperationPrecautions ............................... 4-1
DielectricTest ...................................... 4-1
Mounting .......................................... 4-2
General ........................................ 4-2
Installing Escutcheon Plates ........................ 4-4
Connections ........................................ 4-5
Section 5 TESTING 5-1
General ........................................... 5-1
Testing............................................ 5-1
Preliminary Setup Procedures ...................... 5-1
Time, Date, Settings, and Save ..................... 5-6
Timers......................................... 5-6
Control Inputs ................................... 5-8
Voltage Monitor ................................. 5-10
Voltage Difference Inhibit ......................... 5-10

v
CONTENTS- Continued
Section 5 TESTING - Continued
Sync LB and LL Inhibit ........................... 5-10
PhaseAccept .................................. 5-10
Slip Frequency Difference ........................ 5-11
Pro
g
rammableOutputs .......................... 5-11
Calibration ........................................ 5-12
SelfTest ......................................... 5-13
Loadin
g
Factory Default Settin
g
s ...................... 5-15
Section 6 MAINTENANCE 6-1
General ........................................... 6-1
In-House Repair .................................... 6-1
Stora
g
e ........................................... 6-1
Section 7 CHANGE INFORMATION 7-1

1-1
SECTION 1
GENERAL INFORMATION
DESCRIPTION
BE1-25/79TR Sync-Check Reclosing Relays are microprocessor based relays that provide automatic
reclosing for transmission line systems, utility interties, and distribution systems with cogeneration. BE1-
25/79TR relays provide one or two shot reclosing capabilities with sync-check and voltage monitoring
functions. To provide the required and perhaps changing characteristics for your specific system, theBE1-
25/79TR relays are field programmable via contact sensing inputs. Relay timing is programmed using the
relay front panel mounted switches and visual display or remotely using communication ports mounted on
the frontand rear panels. Communication through the front and rear ports requires a remotecomputer with
modem software. These capabilities are required to fully automate your transmission line system.
CAPABILITIES
BE1-25/79TR relays are similar in principle tomechanical repeatcycletimers wherevarious operationsare
permitted as the cam is rotated. The capabilities of this relay are equivalent to and exceed mechanical
relays used in automated transmission line systems. BE1-25/79TR relays have the following capabilities.
Reclosing
 One or two shots.
 High speed reclose (in cycles) and high speed reclose with sync-check supervision.
 Parallel (live line/live bus) and parallel with sync-check and voltage monitor.
 Restore power (live line and dead bus).
 Line test (dead line and live bus).
Sync-Check
 Checks phase angle between line and bus.
 Phase window setting.
 Slip frequency window setting.
 Independent of reclosing sequence.
Voltage Monitor
 Live line.
 Dead line.
 Live bus.
 Dead bus.
 Delta voltage.
Tripping
 Trip breaker when both line and bus are dead (power fail condition).
 Trip function enabled by power fail (PF) external contact sensing input.

BE1-25/79TR General Information
1-2
Control Inputs (External Contact Sensing Inputs)
 CE - Master timer enable(enables or freeze all timers).
 DTL - Drive to lockout.
 DTR - Drive to reset.
 PF - Power fail tripping enable/disable.
 BLK - Block high speed reclose for three-phase faults.
Enable Inputs (External Contact Sensing Inputs)
 LT1 - Line test one.
 LT2 - Line test two.
 RP1 - Restore power one.
 RP2 - Restore power two.
 PAR - Parallel.
 52b - Breaker b seal.
 HSR - High speed reclose.
Timers
 MASTER - Window for reclosing sequence.
 RST1, RST2 - Reset timers.
 LO - Lockout timer for failed reclose.
 LT1, LT2, RP1, RP2, PAR - Reclose timers.
 HSR - High speed reclose timer.
 SYNC - Sync-check timer.
 PF - Dead line and bus condition timer.
 LOP - Loss of potential with closed breaker.
Indicators
There are five indicator types or categories and all are mounted on the front panel.
 Visual Display - Twelve character display to monitor function, status, and settings.
 Targets - Eight red LEDs.
 Control - Four yellow LEDs.
 Timing - Seven green LEDs.
 Status - One green and four yellow LEDs.
Communications
CommunicationthroughfrontorrearpanelmountedRS 232-Cconnectorsrequiresa remotecomputerwith
modem software in a VT-100 compatible terminal mode. Communication allows a remote or local user to
view current internal relay parameters (parameters in this case refer to the operational status of specific
components such as RAM, ROM, power supply, voltage magnitudes and sync check parameters), select
relay settings, review and reset event record reports data, and view both summary and detailed reports.
Figure 1-1 shows the menu driven flow diagram paths and the required keystrokes to enter and exit each
screen. Main activities (screens) are:
 Diagnostics (password protected)  Review/reset maintenance values
 Programmable outputs  Reports
 Review/edit settings (password protected)

BE1-25/79TR General Information
1-3
Figure 1-1. Communication Terminal Screens Flow Diagram
TIMING FUNCTIONS
Control Inputs
Some control inputs (external contact sensing inputs) are associated with both control and timing and may
be used to enable or disable relay functions. An open CE contact sensing input freezes all timers. When
the CE input is closed, the timers resume timing. When PF contact sensing input is closed (enabled), the
breaker is closed (52b open), and both bus and line voltages are dead, PF timing is initiated . When BLK
contact sensing input is closed, high speed reclosing attempts are blocked. When the DTL or DTR inputis
closed, the relay is driven to lockout (DTL) or reset (DTR).
Reclosing
Timing for reclosing begins when either the breaker opens (52b closes) with an intitiate contact input (LT1,
LT2, RP1, RP2, or PAR) closed or the high speed reclose (HSR) input closes momentarily (refer to Figure
1-2fortimingrelationships). Eitheroftheseconditionscausethemastertimerandallreclosetimerstobegin
timing. ThesettingSTART52ballowsthemastertimerandreclosetimerstostarttimingonlyon52b closing
without an additional initiate contact input closed.
Mastertiming definesaperiod oftime(window)thata recloseoutputmay begiven. One ormorereclosings
maybe initiatedifreclose timerstimeoutduringthemastertimingwindow. Timer durationsareestablished
by programming the relay using the front panel mounted switches and visual display.
Reclose action occurs when the conditions for reclose are satisfied and the particular reclose timer times
out. Conditions associated with each reclose timer are established during setup. They include live or dead
conditionsonthelineandbusand alsothestatusofthebreaker. PARreclosetimeralsoincludesconditions
for delta voltage and phase angle across the open breaker.

BE1-25/79TR General Information
1-4
A failed reclose can be detected when the breaker does not open (52b stays closed) after the breaker
operate time (CLOSE TD setting) and the Lockout Timer time delay expire (see Figure 1-3). If 52b does
not open (indicating a unsuccessful reclose) before the Lockout Timer expires, the relay will go to lockout.
At that time, the breaker must be closed manually.
After the master timer expires, the status of the breaker (52b contact) is checked. If the breaker remains
closed for the time established for RST1 timer, then the relay is reset.
Figure 1-2. PAR (LL/LB) Reclosing Timing Chart
Figure 1-3. Failed Reclose Lockout Timing Chart
Tripping
PowerFail timingisinitiatedwhenbothlineandbus aredead, PFcontactsensinginputisclosed (enabled),
and the breaker is closed. If these conditions remain after the PF timer expires, a trip output is issued. If
the breaker is opened externally with a dead line and dead bus condition, all enabled timers will be frozen
until the breaker is closed manually or until any voltage potential is reapplied.