Basler BE1-25A User manual

INSTRUCTION MANUAL
FOR
AUTO SYNCHRONIZER
BE1-25A
Publication: 9146600990
Revision: M 05/08
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9146600990 Rev M BE1-25A Introduction i
INTRODUCTION
This instruction manual provides information about the operation and installation of the BE1-25A Auto
Synchronizer. To accomplish this, the following information is provided:
•General Information and Specifications
•Controls and Indicators
•Functional Description
•Installation
•Maintenance
WARNING!
To avoid personal injury or equipment damage, only qualified personnel should
perform the procedures in this manual.
NOTE
Be sure that the BE1-25A is hard-wired to earth ground with no smaller than 12
AWG copper wire attached to the ground terminal on the rear of the unit case.
When the BE1-25A is configured in a system with other devices, it is
recommended to use a separate lead to the ground bus from each unit.
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ii BE1-25A Introduction 9146600990 Rev M
First Printing: July 1985
Printed in USA
© 2008 Basler Electric, Highland Illinois 62249 USA
All Rights Reserved
May 2008
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.
BASLER ELECTRIC
ROUTE 143, BOX 269
HIGHLAND IL 62249 USA
http://www.basler.com, [email protected]
PHONE [phone] FAX [phone]
CONFIDENTIAL INFORMATION
of Basler Electric, Highland Illinois, USA. 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.
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9146600990 Rev M BE1-25A Introduction iii
REVISION HISTORY
The following information provides a historical summary of the changes made to the BE1-25A instruction
manual (9146600990). Revisions are listed in reverse chronological order.
Manual
Revision and Date Change
M, 05/08 •Corrected Max Slip Control range in Sections 1 & 2.
•Corrected Breaker Operating Time range in Section 2.
•Added manual part number and revision to footers.
L, 06/06 •Corrected wording in Section 2 paragraph describing F3 function.
•Added metric weights to the specifications of Section 1.
•Changed name of the glossary to Appendix A, Glossary.
•Moved contents of Section 8, Manual Change Information, to the
manual introduction and deleted Section 8.
K, 05/05 •Changed all front panel illustrations to reflect changes to the panel of
the power supply module.
•Updated Figure 4-1 to show new front panel and dimensions.
•Updated Figure 4-2 to show height of panel cutout.
•Added UL and CSA data to the specifications.
J, 11/99 •In the cutout dimensions illustration, added clearance holes for
attaching the cover.
H, 08/98 •Added US patent declaration to the specifications.
•Updated the manual format.
•Made various, minor changes to text.
G, 10/97 •Revisions made to accommodate changes to firmware (version 5.02)
which improved the performance of F1 and F3 type frequency
correction.
F, 07/96 •Revised manual in response to option F5 being made standard.
•Divided Installation and Testing section into two sections.
E, 03/94 •Changed all front panel illustrations to reflect changes in the controls
and indicators.
D •Changed all references to voltage difference adjustment (option A2)
from 1-50 Vac to 1-10 Vac.
•Corrected dead bus VOLTS control from dc to ac.
•Deleted note attached to the SLIP HIGH LED.
•Added manual change information section to the manual.
C •Specification for max slip adjustment was corrected.
•Specification for isolation added.
•UL and CSA approval cited.
•Test procedures simplified.
B •Manual completely revised to reflect the incorporation of a
microprocessor in the synchronizer module (renamed the MCU Sync
module), and related changes beginning with product serial number
300.
•Relay differences section added.
A •General editorial revisions.
—, 07/85 •Initial release
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iv BE1-25A Introduction 9146600990 Rev M
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9146600990 Rev M BE1-25A Introduction v
CONTENTS
SECTION 1 •GENERAL INFORMATION................................................................................................ 1-1
DESCRIPTION.................................................................................................................................... 1-1
OPTIONS............................................................................................................................................ 1-1
MULTI-GENERATOR OPERATION................................................................................................... 1-1
APPLICATION .................................................................................................................................... 1-2
Generator to Bus Application........................................................................................................ 1-2
Bus to Bus Application.................................................................................................................. 1-2
Application Checklist .................................................................................................................... 1-3
Defining the Parameters............................................................................................................... 1-4
MODEL AND STYLE NUMBER.......................................................................................................... 1-5
SPECIFICATIONS.............................................................................................................................. 1-7
SPECIFICATIONS OF OPTIONS....................................................................................................... 1-8
SECTION 2 •HUMAN-MACHINE INTERFACE....................................................................................... 2-1
CONTROLS AND INDICATORS........................................................................................................2-1
ADDITIONAL MODULES.................................................................................................................... 2-7
Voltage Acceptance Module A1 ................................................................................................... 2-7
Voltage Acceptance Module A2 ................................................................................................... 2-8
Frequency Matching Module F5................................................................................................... 2-9
Voltage Matching Module V1...................................................................................................... 2-12
Voltage Matching Module V2...................................................................................................... 2-13
Voltage Matching Module V3...................................................................................................... 2-13
Dead Bus Module D1 ................................................................................................................. 2-14
SECTION 3 •FUNCTIONAL DESCRIPTION........................................................................................... 3-1
SYSTEM OPERATION....................................................................................................................... 3-1
INPUT CIRCUITS ............................................................................................................................... 3-3
Contact Inputs............................................................................................................................... 3-3
Front Panel Inputs........................................................................................................................ 3-3
Analog Inputs................................................................................................................................ 3-3
MICROPROCESSOR CIRCUITRY .................................................................................................... 3-4
OUTPUTS........................................................................................................................................... 3-4
OPTIONS............................................................................................................................................ 3-4
VOLTAGE ACCEPTANCE MODULE A1............................................................................................ 3-6
VOLTAGE ACCEPTANCE MODULE A2............................................................................................ 3-7
FREQUENCY MATCHING MODULE F5............................................................................................ 3-8
Frequency Correction................................................................................................................... 3-8
Phase Correction.......................................................................................................................... 3-8
VOLTAGE MATCHING MODULE V1................................................................................................. 3-9
VOLTAGE MATCHING MODULE V2............................................................................................... 3-10
VOLTAGE MATCHING MODULE V3............................................................................................... 3-11
DEAD BUS MODULE D1.................................................................................................................. 3-12
SECTION 4 •INSTALLATION.................................................................................................................. 4-1
GENERAL........................................................................................................................................... 4-1
OPERATING PRECAUTIONS............................................................................................................ 4-1
DIELECTRIC TEST............................................................................................................................. 4-1
MOUNTING......................................................................................................................................... 4-1
CONNECTIONS.................................................................................................................................. 4-3
General......................................................................................................................................... 4-3
Multi-Generator Operation............................................................................................................ 4-3
SECTION 5 •TESTING ............................................................................................................................ 5-1
GENERAL........................................................................................................................................... 5-1
OPERATING PRECAUTIONS............................................................................................................ 5-1
DIELECTRIC TEST............................................................................................................................. 5-1
APPLICATION .................................................................................................................................... 5-1
APPLICATION EXAMPLE .................................................................................................................. 5-2
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vi BE1-25A Introduction 9146600990 Rev M
Example Parameters.................................................................................................................... 5-2
Recommended Procedure............................................................................................................ 5-2
VERIFICATION AND CALIBRATION................................................................................................. 5-3
General......................................................................................................................................... 5-3
Equipment Required..................................................................................................................... 5-3
Preliminary Instructions ................................................................................................................ 5-4
VERIFICATION TESTS ...................................................................................................................... 5-7
General......................................................................................................................................... 5-7
Undervoltage (UV) Inhibit Verification Test .................................................................................. 5-7
Slip Frequency Verification Test................................................................................................... 5-8
Sync Signal Verification Test........................................................................................................ 5-8
Lockout and Reset Verification Test............................................................................................. 5-9
Advance Angle Verification Test................................................................................................... 5-9
VERIFICATION TESTING OPTIONS............................................................................................... 5-10
Voltage Acceptance Module A1 Verification Test ...................................................................... 5-10
Voltage Acceptance Module A2 Verification Test ...................................................................... 5-10
Frequency Matching Module F5 Verification Test...................................................................... 5-11
Voltage Matching Module V1 Verification Test........................................................................... 5-12
Voltage Matching Module V2 Verification Test........................................................................... 5-12
Voltage Matching Module V3 Verification Test........................................................................... 5-12
Dead Bus Module D1 Verification Test ...................................................................................... 5-13
SECTION 6 •MAINTENANCE ................................................................................................................. 6-1
GENERAL........................................................................................................................................... 6-1
IN-HOUSE REPAIR............................................................................................................................ 6-1
STORAGE........................................................................................................................................... 6-1
SECTION 7 •RELAY DIFFERENCES ..................................................................................................... 7-1
GENERAL........................................................................................................................................... 7-1
PRODUCT DESIGN CHANGES.........................................................................................................7-1
CONNECTIONS.................................................................................................................................. 7-1
AUTOMATIC SYNCHRONIZER.........................................................................................................7-4
Functional Description.................................................................................................................. 7-4
Calibration Instructions................................................................................................................. 7-6
Pre-Calibration Procedure............................................................................................................ 7-7
Basic Synchronizer Calibration..................................................................................................... 7-7
BREAKER TIME EQUALIZATION MODULES (OPTIONS B3 AND B5)............................................ 7-8
Description and Application.......................................................................................................... 7-8
Functional Description.................................................................................................................. 7-8
B3 and B5 Calibration................................................................................................................... 7-9
FREQUENCY MATCHING MODULES (OPTIONS F1, F2, F3, AND F4)........................................ 7-10
Description and Application........................................................................................................ 7-10
Frequency Matching Module F1................................................................................................. 7-10
Frequency Matching Module F3................................................................................................. 7-10
Frequency Matching Module F2................................................................................................. 7-11
Frequency Matching Module F4................................................................................................. 7-12
F2 and F4 Calibration................................................................................................................. 7-13
VOLTAGE MATCHING MODULE V4............................................................................................... 7-14
Description and Application........................................................................................................ 7-14
V4 Functional Description........................................................................................................... 7-14
APPENDIX A •GLOSSARY.....................................................................................................................A-1
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9146600990 Rev M BE1-25A General Information 1-1
SECTION 1 • GENERAL INFORMATION
DESCRIPTION
A basic BE1-25A Auto-Synchronizer consists of three rack-mounted modules that determine the proper time
to initiate closing of a breaker to parallel a generator and a bus. The three standard modules are the master
control unit (MCU) sync module, the test module, and the power supply. Optional plug-in modules are
available for installation (at initial purchase, or at any later time) to enhance this basic capability. Among the
options are the frequency matching and voltage matching modules that direct the generator control system
to adjust voltage or frequency (or both) to meet system requirements. The unit is not truly an automatic
synchronizer unless one or more of the matching options is incorporated.
An ideal closing is one that minimizes electrical and mechanical transients. Because the ideal closing occurs
when the voltages arein phase,the initiatingsignalmust be delivered ahead of phase coincidence bya factor
equal to the operating speed of the breaker. This factor (termed the advance angle) is calculated bythe MCU
sync module. This module is essentially adedicated computer that monitors the voltages on both sides of the
breaker to be closed, calculates the slip frequency, and then (taking into consideration the operating speed
of the breaker) calculates the required advance angle.
Closure will occur only if the slip frequency is less than the limit established by the slip setting. Once breaker
closure has been initiated, the BE1-25A is inhibited from further operation for a minimum of 15 seconds. If
the breaker reopens during this 15-second inhibit period, the unit enters a lockout condition that prevents
further operation until the unit is reset.
OPTIONS
Plug-in options can extend the capability of the basic unit. These are briefly summarized here as to overall
function. (They are explained in detail in the later sections of this manual.)
!A voltage acceptance module may be added to the basic synchronizer to assure that the oncoming
generator voltage is within a pre-selected magnitude with respect to the bus voltage before breaker
closure is allowed. This option is required if one of the voltage matching modules is to be used.
!Voltage matching modules provide RAISE and LOWER signals to the voltage regulator of the
oncoming generator to bring the machine voltage within the limits defined by the voltage acceptance
module.
!Frequency matching (i.e., speed control) module provides RAISE and LOWER signals to the
governor to bring the oncoming generator speed to within the slip frequency limit that is preset into
the Auto-Synchronizer. If the slip is very small and the phase angle is large, a target pulse is initiated
to change the generator speed in the direction of the closest phase coincidence.
!A dead bus module allows selection of various low bus voltage conditions to enable breaker closing
without synchronization. This provides a black start capability for the system.
MULTI-GENERATOR OPERATION
BE1-25A relays can control more than one generator by simultaneously switching all of the relay relevant
inputs and outputs from one generator to the next. Those inputs and outputs are: the generator sensing
voltage, breaker 52b and closing coil circuits, and the leads associated with options (such as the frequency
and voltage matching lines to regulator or governor). All of these must be switched simultaneously by a
ganged switch called the synchronizing select switch. (This switch is installed external to the BE1-25A unit,
and is not supplied with the relay. Installation details are given in Section 4, Installation.)
Inadditiontotherelayrelevantinputsandoutputs,settingsforthesystem operationalparametersareentered
usingtheMCUfrontpanelLOAD/FUNCTIONselectswitch.Settingsforsixgeneratorsystemscanbeentered
and stored into MCU memory.
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1-2 BE1-25A General Information 9146600990 Rev M
APPLICATION
General
Fromlarge,singleormultiplegeneratorstosmall,multiple-unitapplications,slipfrequencysynchronizerssuch
as the BE1-25A provide fast, accurate, synchronization of generator-to-bus or bus-to-bus breaker closures
if a slip rate exists between the two sides of the open breaker. For the BE1-25A to be capable of closing the
breaker, the phase angle between the two voltage inputs must first pass through 180 electrical degrees and
maintain a slip rate until the synchronizer issues a breaker close signal.
Excluded from this discussion are phase lock type synchronizers (such as the BE3-25A) that do not require
)nor allow )a slip to occur between the oncoming generator and the bus.
Generator-to-Bus Application
For a slip frequency synchronizer to operate properly in a generator-to-bus application, the following listed
operational parameters are entered into the memory of the synchronizer using the front panel
LOAD/FUNCTION select switch.
!Generator breaker closing time (calculates advance angle)
!Generator speed correction pulse width(maximum correction pulse width)
!Generator speed correction pulse interval (maximum correction pulse interval)
!Maximum slip frequency (maximum slip frequency and still allow breaker closing)
!Generator undervoltage (inhibits synchronization below this limit)
!Lockout ON/OFF (arms or disarms lockout feature)
Synchronization is enabled when the slip frequency is less than the maximum slip setting and the generator
voltage is greater than the generator undervoltage setting. Synchronization is NOT enabled (inhibited) when
the slip frequency is greater than the maximum slip setting, the generator voltage is less than the generator
undervoltage setting, or a lockout condition exists. If avoltage acceptance option is included, synchronization
is NOT enabled if the bus voltages are out of limits, the voltage difference between generator and bus is
greater than the setting, or the phase angle difference is greater than the calculated advance angle. If a dead
bus option is included, immediate synchronizationis enabled if the bus voltageis less thanthe setting and the
dead bus enable input is closed.
When generator speed correction pulses are required, proportional pulses are generated based on the slip
frequency and the maximum slip frequency setting. If the slip frequency is greater than four times the
maximum slip frequency setting, proportional pulse are generated that are equal to 100 percent of the
correction pulse width. Correction pulses proportionally reduce in duty cycle (ration of ON time to OFF time)
down to zero for slip frequencies less than four times the maximum slip frequency setting. At one-half the
setting, correction pulses are disabled. If the slip frequency falls below one-sixteenth of the maximum slip
frequencysetting for ten seconds, target pulses are generated to prevent ahung-scope or non-slip condition.
Bus-to-Bus Application
Some transmission circuits, when split apart, assume a phase angle difference that stabilizes as a steady
offset. When this occurs, it is possible to reclose bysupervisorymeans (usually supervised by a sync-check
relay) if the angle is small enough or the shock to the system can be tolerated. In cases where a slip exists,
re-connection can be attained using a BE1-25A. In this case, one of the following conditions must be met for
the BE1-25A to initiate closure.
!A slip frequency exists the prescribed limit (i.e., within the setting adjustment of the synchronizer).
!The phase angle difference is less than three degrees, with no system slip. In this case, the phase
angle between the two systems must have passed through 180 degrees to enable the synchronizer.
If either of the two conditions are met, theBE1-25A will operate in a bus-to-bus environment as it would in the
case of an oncoming generator. It provides a closure command so that breaker closure occurs when the
phase difference is near zero. To achieve this advance timing, the closing time of the controlled breaker must
be set into the synchronizer memory.
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9146600990 Rev M BE1-25A General Information 1-3
Application Checklist
When developing the appropriate operating parameters and safeguards for synchronizing a generator with
a bus, the following items should be considered.
1. Secondary potential transformer voltage waveforms should be carefully compared with the primary
voltages. Consider the following:
a. Are the secondary and primary voltages identical for both bus and generator?
b. Is there a power transformer involved? (Suppose, for example, that the generator is operating
at 2,400 volts, delta, and the bus at 34,500 volts, wye. Are the power transformer secondary
voltages the same when the bus and generator voltages are proper?)
c. Is there a phase shift?
d. Is the phase rotation correct?
e. Dothepotentialtransformersreflecttheactualprimaryvoltagechangeswithoutsignificantdelay?
2. When switching the auto-synchronizer from one generator to another, ALL of the auto-
synchronizer/generator control inputs must be simultaneously transferred to the correct oncoming
breaker and the associated generator. During this transfer, the 52b contact of the breaker must be
closed. Otherwise, an interlock (in the software) prevents the auto-synchronizer from operating.
The signals that must be switched include (but are not limited to):
a. Breaker status signal (i.e., 52b)
b. Generator voltage
c. Breaker close (contact input) circuit
d. Breaker closing time
3. Whenever frequency or voltage control options are used, their outputs must also be switched to the
correct machine governor and voltage regulator.
4. The frequencycorrection pulse width (the amount of time a raise or lower signalremains ON) should
be coordinated with the speed of response of the governor, the fuel system, and the prime mover to
minimizethetimerequired tobringthegeneratorfrequencyintotherequiredrelationshipwiththebus
frequency without excessive overshoot or hunting.
5. The voltage correction pulse width and frequency should be coordinated with the response time of
the voltage regulator/exciter/generator combination to minimize the time required to correct the
voltage without overshooting or hunting.
6. If a dead bus closing is desired )i.e., if the machine can be started without the bus (to which it is to
be synchronized) being energized )two conditions must be met:
a. Operating power for the synchronizer must come from a separate source (like a battery) or from
the generator bus.
b. A dead bus option must be included in the unit and be programmed to allow closure to a dead
bus.
7. Some systems, where speed of synchronizing is a primary consideration, allow an oncoming
generator to be closed onto the bus from either the fast or slow side, and with the voltage either high
or low.
a. Fast means that the machine is running with a positive slip (faster than the bus).
b. Slow indicates a negative slip (i.e., slower than the bus).
c. High is generator voltage greater that bus voltage.
d. Low is generator voltage less than bus voltage.
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1-4 BE1-25A General Information 9146600990 Rev M
Most systems include a provision to permit closing only with the speed fast and voltage high. This allows the
generator to pick up some watt and var load at once, thus stabilizing the system quickly.
By contrast, when the speed is slow and the voltage low, the system must feed watts and reactive VA to the
machine (to add power to the prime mover and excitation to the exciter field), therebyraising both speed and
voltage. Since this action is controlled only by the sub-synchronous reactance of the machine, it can cause
uncontrolledswingsofboth varsand watts.Theresultingtendencytowarddestabilizationmaycausewinding,
iron,orshaftstress.Accordingly,theselectionofclosingdirectionandpermissiblelimitsshouldconsiderthese
and other pertinent application data.
Defining the Parameters
These application notes are not intended to cover everypossible set of circumstances, but rather to provide
a basic description of slip frequency synchronization. The relationship between slip, advance angle (or
window), and breaker closing time is shown in Figure 1-1, and described by the formula:
AA= 360(TCB+TR)FS
where
AA= advance angle in degrees. This is the time, measured in electrical degrees, between initiation
of breaker closure and the actual closure of the breaker contacts.
360 = degrees per slip cycle.
TCB = the closing time of the circuit breaker in seconds. This is the time required from the closure of
the synchronizer output contact to the actual closing of the circuit breaker contacts. T CB is
preset in synchronizer memory for each different breaker controlled by the synchronizer.
EXCEPTION: In some applications, T CB may represent the characteristic closing time of a
group of breakers all having the same closing time.
TR= response time, in seconds, of the synchronizer breaker close output relay. (A non-adjustable
parameter approximately 0.008 second.)
FS= slip frequency in cycles per second. This is the oncoming generator frequency minus the bus
frequency: positive for a generator speed higher than bus, negative for lower.
The relationships defined above should prove helpful in determining the settings for the auto-synchronizer.
Notethatreducingtheadvanceangle(orwindow)alsoreducestheabsolutevalueoftheslipfrequency(which
is the maximum permissible speed difference for which the machine is allowedto close onto the bus). Lower
slip frequencies are softer (i.e., less liable to produce system disturbance or machine damage).
Higher frequencies, on the other hand, are quicker (i.e., allow synchronization to be accomplished faster).
Again, these considerations should be balanced against others such as:
1. How fast do I need to be on line?
2. How critical is the machine?
3. How expensive is the machine as against possible outage (down) times?
Apropersynchronizerapplicationwilltakeintoaccounttheconsiderationsmentionedabove,aswellasothers
that may be unique to the system under consideration.
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9146600990 Rev M BE1-25A General Information 1-5
Figure 1-1. Slip, Advance Angle, and Breaker Closing Time
MODEL AND STYLE NUMBER
BE1-25A Auto-Synchronizer style numbers define the features of a specific device. Each pair of characters
withinthestylenumber is associated witha specific feature or option thatmaybeselected from the style chart
on the following page.
For example, if the first two digits of the style number are A2, the unit has thecapabilityof deferring its closure
command to the breaker for any of the following reasons: (1) the bus is under a specified voltage; (2) the bus
is over a specified voltage; and (3) the bus-to-generator voltage is less than a selected value. Another
consideration: If a voltage matching option is desired (let assume it is), including one of the A options is
essential.
The second pair of digits determines the manner in which the Auto-Synchronizer commands the generator
tochangespeed.ThisrelayusesoptionF5,whichcaninitiatetwodifferenttypesofspeed-changecommands:
(1) proportional correction pulses, that are issued when the slip frequency is above the allowable limit; and
(2) target correction pulses, that automatically forces synchronization whenever an out-of-phase condition
coincides with a near-zero slip rate.
The third pair of digits selects the voltage matching capabilities that are required for an application. We might
look first at the voltage matching module with the most features, V3. Let examine these capabilities, and how
they might be useful to a specific application.
Option V3 (like Option V2) can automatically initiate corrective pulses to bring the generator voltage to within
the limits established by Option A1 or A2.However, when the voltage difference between bus and generator
is less than 20.0 volts, V3 has the additional capability of reducing the width of the corrective pulses by an
amount proportional to the correction required. This feature can significantly reduce overshoot where inertia
is particularly high (as in the control of sluice gates). If this is beneficial to our hypothetical application (let
assume it is) then the matter is decided: the third pair of digits is V3.
Finally, we choose D1 as the last pair of digits because we want the capabilityof obtaining a closure when a
dead bus is detected. (D1 also has the means of setting a threshold voltage to define a dead bus condition.)
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1-6 BE1-25A General Information 9146600990 Rev M
When ordering, it is recommended that the style number be preceded bythe model number. Accordingly, the
style number now looks like:
BE1-25A A2 F5 V3 D1
where
BE1-25A = the model number
A2 = 3-parameter voltage restraint
F5 = both proportional correction pulse and target pulse capability
V3 = proportional correction pulse capability
D1 = automatic closure capability upon recognition of a dead bus.
Figure 1-2. Style Number Identification Chart
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9146600990 Rev M BE1-25A General Information 1-7
SPECIFICATIONS
General specifications for the BE1-25A system are provided in the following paragraphs. For specifications
that apply only to particular options, see the ensuing subsection entitled Specifications of Options.
Voltage Sensing Inputs 70-150 Vac, 50/60 Hz. Burden: Less than 6 VA for the generator
(Bus and Generator) input; less than 2 VA for the bus input.
Contact Sensing Inputs Requires a user-supplied contact with a minimum rating of 0.05 A
at 250 Vdc.
Power Supply Power for the internal circuitry may be derived from 90-132 Vac
at 50/60 Hz (single phase), or 70-150 Vdc. Burden: Less than
20.0 VA.
Outputs Output contacts are rated as follows.
Breaker Closing
Normally open. Make and carry 30 A at 250 Vdc for 1 second, 7
A continuously, and break 0.3 A at 250 Vdc. (L/R = 0.04).
Voltage, Frequency (Speed) Correction, and Lockout
Form C (SPDT). Make and break 5 A at 250 Vac (80% PF), 5 A
at 28 Vdc (resistive), and 0.5 A at 120 Vdc (resistive).
Tolerances
Advance Angle The command for breaker closure occurs within ±3.0° of phase
coincidence of bus and generator. (Closure will not occur if the
calculated advance angle exceeds 40°.)
Lockout Occurs when breaker reopens within 15 ±10% seconds after the
initiation of breaker closure.
Slip Frequency (FS) ±0.001 hertz.
Generator Undervoltage ±1.0 V.
Inhibit
Control Ranges The following parameters are settable over the indicated ranges.
MAX SLIP Adjustable from 0.01 to 0.500 in steps of 0.001.
BRKR TIME The characteristic breaker time settings are adjustable from 0.02
to 0.8 seconds.
Generator Undervoltage Adjustable from 40 to 110 Vac.
Inhibit
Generator Speed Adjustable between 0 to 99.9 seconds in 0.1 second increments.
Correction Pulses
Shock In standard tests, the relay withstood 15 G in each of three
mutually perpendicular axes without structural damage or
degradation of performance.
Vibration In standard tests the relay withstood 2 G in each of three
mutually perpendicular axes swept over the range of 10 to
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1-8 BE1-25A General Information 9146600990 Rev M
500 Hz for a total of six sweeps, 15 minutes each sweep, without
structural damage or performance degradation.
Isolation 1,500 Vac at 60 Hz for one minute in accordance with IEC 255-5
and ANSI/IEEE C37.90-1978 (Dielectric Test).
Surge Withstand Capability Qualified to ANSI/IEEE C37.90.1-1989 Standard Surge
Withstand Capability Tests, and to IEC 255-5 Impulse Test and
Dielectric Test.
Radio Frequency Interference Field tested using a five watt, hand-held transceiver operating at
random frequencies centered around 144 MHZ and 440 MHZ,
with the antenna located six inches from the relay in both
horizontal and vertical planes.
Maintains proper operation when tested for interference in
accordance with IEC C37.90-1989, Trial-Use Standard Withstand
Capability of Relay Systems to Radiated Electromagnetic
Interference from Transceivers.
Patent Patented in U.S., 1998, Patent No. 5761073.
UL Listed UL listed per Standard 508, UL File Number E97033.
C.S.A. Certification CSA certified per Standard CAN/C.S.A.-C22.2 Number 14.
CE Qualification This product meets or exceeds the standards required for
distribution in the European community.
Gost R Certification Gost R certified No. POCC US.ME05.B03391; is in compliance
with the relevant standards of Gosstandart of Russia. Issued by
accredited certification body POCC RU.0001.11ME05.
Temperature
Operating –40 to 70°C (–40 to 158°F)
Storage –65 to 100°C (–85 to 212°F)
Weight 16.0 lb (7.26 kg) net for basic synchronizer (Includes the rack
frame, MCU module, and power supply module.)
SPECIFICATIONS OF OPTIONS
To eliminate repetition, only the specifications that uniquely apply to a particular option are given below.
Specifications that are applicable throughout the unit (including the options) are stated above.
Voltage Acceptance Option A1
VOLTAGE DIFFERENCE CONTROL Minimum threshold adjustable from 0.5 to 5% of generator
voltage. (Generator voltage minus bus voltage)
Weight 6.6 oz (186.0 g)
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9146600990 Rev M BE1-25A General Information 1-9
Voltage Acceptance Option A2
BUS VOLTAGE UPPER LIMIT Maximum threshold adjustable from 100 to 150 Vac.
CONTROL
BUS VOLTAGE LOWER LIMIT Minimum threshold adjustable from 80 to 120 Vac.
CONTROL
VOLTAGE DIFFERENCE CONTROL Minimum threshold adjustable from 1 to 10 Vac of generator
voltage. (Generator voltage minus bus voltage)
Weight 8 oz (226.8 kg)
Frequency Matching Option F5
CORRECTION PULSE WIDTH Adjustable from 0 to 99.9 seconds.
CONTROL
CORRECTION PULSE INTERVAL Adjustable from 0 to 99.9 seconds.
CONTROL
Weight 6.6 oz (186.0 g)
Voltage Matching Option V1
Weight 5 oz (140.6)
Voltage Matching Option V2
CORRECTION PULSE WIDTH Adjustable from 0.1 to 5.0 seconds.
CONTROL
CORRECTION PULSE Adjustable from 0.2 to 10.0 seconds.
INTERVAL CONTROL
Weight 7.0 oz (200.0 g)
Voltage Matching Option V3
CORRECTION PULSE WIDTH Adjustable from 0.1 to 5.0 seconds.
CONTROL
CORRECTION PULSE Adjustable from 0.2 to 10.0 seconds.
INTERVAL CONTROL
Weight 8.5 oz (240.4 g)
Dead Bus Option D1
VOLTS CONTROL Adjustable from 10.0 to 40.0 Vac.
Weight 6.6 oz (186.0 g)
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1-10 BE1-25A General Information 9146600990 Rev M
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9146600990 Rev M BE1-25A Human-Machine Interface 2-1
SECTION 2 • HUMAN-MACHINE INTERFACE
CONTROLS AND INDICATORS
A basic BE1-25A Synchronizer (without options) is shown in Figure 2-1 and described in Table 2-1. Figure
2-2 shows the Test Module in its offset position as required for testing. The remaining figures describe the
various options currently available.
Table 2-1. BE1-25A, Controls and Indicators (Refer to Figures 2-1 and 2-2)
Locator Control or Indicator Function
A GENERATOR SELECT
Control When the Test Module is in the test position (as in Figure 2-
2), this control selects one of the six possible generator
operation times that are stored in the memory of the MCU
Sync module. This selection process allows the stored
constant for a particular generator to be employed as a
reference for test purposes. This control has no function
when the Test Module is in the operate position (as shown
in Figure 2-1.)
BTest Jacks When the Test Module is in the test position (Figure 2-2),
the tip jacks facilitate testing in the following described
manner. When the Test Module is in the normal position
(Figure 2-1), certain jacks serve as monitoring points as
described in the following paragraphs.
Starting from the top, the seven pairs of jacks are:
1. BUS voltage. When test module is in test position, a
simulated bus voltage can be injected for test purposes. In
normal position, monitors the bus voltage.
2. GENerator voltage. When test module is in test position,
allows a simulated generator voltage to be injected for test
purposes. In normal position, allows the generator voltage
to be monitored.
3. POWER. When the test module is in test position, allows
thespecifiedoperating power(i.e.,85-135 Vac@50/60 Hz,
or 70-150 Vdc) to be supplied to the BE1-25A relay. (This
power wasautomatically disconnected by the act of placing
the module into the test position.) In the normal position,
allows the supplyvoltage to be monitored (i.e., terminals 21
and 22 of TB1).
4. 52b. When the test module is in test position, provides a
means of simulating a 52b contact closure (by applying a
jumper or closing a switch across these jacks). In the
normal position, allows the 52b contact input to be
monitored.(Measuresapproximately100Vdcwhenthe52b
contact input is open, 0 Vdc otherwise.)
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2-2 BE1-25A Human-Machine Interface 9146600990 Rev M
Figure 2-1. Location of Controls and Indicators
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