BE1-47N NEGATIVE SEQUENCE VOLTAGE RELAY BE1-47N Voltage Phase Seq

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

BE1-47N NEGATIVE SEQUENCE VOLTAGE RELAY BE1-47N Voltage Phase Seq

Datasheet Thumbnail

Top Searches for this datasheet

BE1-47N
BE1-47N NEGATIVE SEQUENCE VOLTAGE RELAY
BE1-47N Voltage Phase Sequence Relay provides protection rotating equipment from damaging effects excessive negative sequence voltage resulting from phase failure, phase unbalance reversed phase sequence.
ADVANTAGES
Responds true negative sequence voltage component. Unaffected frequency variations Negative Sequence Voltage adjustment range percent. Optional Over Undervoltage measuring elements. sensing supply burdens. Instantaneous, Definite Inverse time delay characteristics available each measuring element. Qualified requirements IEEE C37.90.1-1989 surge withstand capability; 255-5 impulse. Recognized under Standard 508, File #E97033.
APPLICATION Page SPECIFICATIONS Page EXTERNAL CONNECTIONS Page ORDERING Page
ADDITIONAL INFORMATION
INSTRUCTION MANUAL
Request publication 9170400990
STANDARDS, DIMENSIONS ACCESSORIES
Request bulletin
ROUTE 143, HIGHLAND, ILLINOIS 62249, U.S.A. PHONE 618-654-2341 618-654-2351
UDK-3 10-95
BE1-47N
APPLICATION
PURPOSE BE1-47N designed protect three-phase machines against damage caused phase failure, reverse phase sequence phase unbalance, undervoltage overvoltage. BE1-47N responds negative sequence voltage which results from fault misconnection balanced three-phase system. BE1-47N detects reverse phase connection lines, transformers, motors, generators, synchronous condensers often applied automatic transfer schemes assure connection proper phase rotation well voltage conditions. Negative Sequence Voltage Relay recommended important buses supplying motor loads. When used motor protection, relay will provide protection preventing start-up motor open phase reverse phase conditions tripping motor off-line phase unbalance, undervoltage overvoltage conditions. Negative sequence voltage result unequal phase condition. This unequal singlephase loads system unequal transformer impedances between phases. negative sequence level normally expected industrial supply. significant increase above this level indication power service problem that could lead serious plant problems. BE1-47N ability detect negative sequence voltage levels this magnitude. Undervoltage voltage balance relays have traditionally been applied protection induction motors from operating with phase open. These relays reliably detect this condition back motor open phase. However, induction motor, with starting current unit, will generate negative sequence voltage fully loaded when fuse blows. negative sequence voltage will somewhat reduced motor fully loaded. sensitivity BE1-47N insensitivity frequency will provide reliable protection motors. Motor losses current unbalance increase with negative sequence voltage level. increased loss, negative sequence voltage, function motor load independent. machine operating with 3.5% negative sequence voltage will have stated losses increased 25%. blown fuse power factor correction capacitor bank result negative sequence voltage increase. increase motor losses costly. BE1-47N should applied protect motor buses from open phase. also applied protect critical individual motors, static non-rotating loads from effects negative sequence voltage. choice time delay characteristics allows relay respond desired manner wide variety transient fault conditions. BE1-47N also used provide over/ undervoltage protection. separate time delay utilized prevent shutdown equipment minor voltage dips permit sequential operation when relay being used supervisory capacity.
SPECIFICATIONS
FUNCTIONAL DESCRIPTION specifications these pages define features options that combined satisfy application requirement. block diagram, Figure illustrates various standard features, well options, function together. INPUTS Voltage Sensing Standard potential transformer secondaries with 100/ 173/208V 50/60 nominal ratings supply Negative Sequence Voltage Relays input transformers with three phase voltages. relays sensing
BE1-47N
SPECIFICATIONS (Continued)
Figure Functional Block Diagram inputs capable withstanding 160% selected nominal continuously, with maximum burden phase. Power Supply five power supply types selected provide internal operating power. They described Table TABLE POWER SUPPLY OPTIONS
Type
7.60 18.01
zero sequence (V0) components voltage. output this filter true negative sequence voltage measured. output this filter affected frequency variations from system nominal Hz). NEGATIVE SEQUENCE VOLTAGE COMPARATOR voltage from sequence filter compared with front panel pickup setting. When level exceeds pickup setting, illuminated timing initiated. range negative sequence voltage pickup setting increments Pickup accuracy within unit percent setting negative sequence voltage. Over/Undervoltage Sensing relay optional capability monitor phase-to-phase voltage from applied three phase voltage. This voltage scaled applied over/ undervoltage comparator.
7.38
6.96 7.60
10.25 28.03
Nominal Voltage Burden 6.96
type power supply field selectable Vdc. Selection must implemented time installation. This power supply option factory Vdc.
NEGATIVE SEQUENCE VOLTAGE (V2) FILTER phase voltages applied negative sequence voltage filter that removes positive sequence (V1)
BE1-47N
SPECIFICATIONS (Continued)
OVER/UNDERVOLTAGE COMPARATOR scaled, single-phase signal compared with respective front panel pickup setting. magnitude signal above overvoltage pickup setting below under-voltage pickup setting, corresponding illuminated selected time characteristic initiated. range overvoltage pickup setting from above nominal rating relay. range under-voltage pickup setting from below nominal. Both pickup settings independently adjustable increments with pickup accuracy expected voltage value. TIMING Each timing option (inverse, definite, instantaneous) completely independent each relay function (47N negative sequence voltage, under-voltage, -overvoltage). Three timing characteristics available: adjustable over range seconds increments seconds Inverse Time adjustable over range increments Inverse time characteristics illustrated Figure Instantaneous Time less than milliseconds. TARGETS Magnetically latched, manually reset, target indicators optionally available indicate that output tripped. Either internally operated current operated targets specified. Current operated targets require output trip circuit actuate, trip circuit current must exceed seconds, minutes, continuous. Current operated targets selected only when normally open (NO) output contacts have been specified. OUTPUTS Output contacts rated follows: Resistive 120/240 make seconds, carry continuously, break make carry seconds, carry continuously, break make carry seconds, carry continuously, break Inductive 120/240 Vac, Vdc, break (L/R 0.04). Definite Time Push-to-Energize-Output Pushbuttons Accessible with thin nonconducting through front panel, push-to-energize pushbuttons available energize each output testing external control/ protective system wiring. POWER SUPPLY STATUS OUTPUT power supply output relay energized output contact opened when power applied relay. Normal internal relay operating voltage maintains power supply status output relay continuously energized state with output contact open. power supply output voltage falls below requirements proper operation, power supply output relay deenergized, closing output contact. SURGE WITHSTAND CAPABILITY Qualified ANSI C37.90a-1974, Surge Withstand Capability Test 255, Impulse Test Dielectric Test. MECHANICAL Operating Temperature -40°C (-40°F) +70°C (+158°F) Storage Temperature -65°C (-85°F) +l00°C (+212°F) Weight 14.0 pounds maximum Shock standard tests, relay withstood each three mutually perpendicular axes without structural damage degradation performance. Vibration standard tests, relay withstood each three mutually perpendicular axes swept over range total sweeps, minutes each sweep, without structural damage degradation performance.
BE1-47N
SPECIFICATIONS(continued)
Figure Inverse Time Characteristic Curves
BE1-47N
CONNECTIONS
Figure Voltage Sensing
Figure Delta Voltage Sensing
Figure Control Circuits
BE1-47N
ORDERING
MODEL NUMBER BE1-47N Voltage Phase Sequence Relay STYLE NUMBER style number appears front panel, drawout cradle, inside case assembly. This style number alphanumeric combination characters identifying features included particular unit. sample style number below illustrates manner which various features designated. Style Number Identification Chart (page defines each options characteristics available this device. SAMPLE STYLE NUMBER: E3GA1PA2R2F style number above describes BE1-47N voltage phase sequence relay having following features. Sensing Input Type Three-phase voltage (L-L) 120V/60 nominal relay, normally closed Target Timing Power Supply (A1) Instantaneous Vdc/120 external power source internally operated target Inverse time
Option (undervoltage) Option (overvoltage) Option
Instantaneous time
auxiliary output relay, normally closed Semi-flush mounting
Option
NOTE: description complete relay must include both model number style number.
Sensing Input Range Output
SAMPLE STYLE NUMBER ILLUSTRATED
ORDER: Designate model number followed complete Style Number.
STANDARD ACCESSORIES: following accessories available BE1-47N, Voltage Phase Sequence Relay. Test Plug allow testing relay without removing system wiring, order test plug, Basler Electric part number 10095. option through been specified, order test plugs. Extender Board extender board permits troubleshooting printed circuit boards outside relay cradle. Order Basler Electric part number 9165500100.
BE1-47N
Style Number
Complete Style Number selecting feature from each column Style Number Identification Chart entering designation letter number into appropriate square. (Two squares used indicate time delay characteristics.) squares must completed.
BE1-47N
ORDERING, continued
STYLE NUMBER IDENTIFICATION CHART BE1-47N
ROUTE 143, 269, HIGHLAND, ILLINOIS U.S.A. 62249 P.A.E. Pins, 67319 Wasselonne Cedex FRANCE PHONE 618-654-2341 618-654-2351 PHONE (33-3-88) 87-1010 (33-3-88) 87-0808 http://www.basler.com, info@basler.com

BE1-47N NEGATIVE SEQUENCE VOLTAGE RELAY BE1-47N Voltage Phase Seq

Top Searches for this datasheet

Other recent searches