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BE1-47N NEGATIVE SEQUENCE VOLTAGE RELAY The BE1-47N Voltage Phase Sequence Relay provides protection for rotating equipment from the damaging effects of excessive negative sequence voltage resulting from phase failure, phase unbalance and reversed phase sequence. ADVANTAGES • Responds to true negative sequence voltage component.
SPECIFICATIONS ccontinuedl TIMING AUX. TIMING TIMING TO INTERNAL CIRCUITRY OPERATING POWER POWER SUPPlY 02818-12 STATUS 07-30-98 FIGURE FUNCTIONAL BLOCK DIAGRAM inputs are capable of withstanding 160% of the selected voltage filter which removes the positive sequence (V 1 ) nominal continuously, with a maximum burden of 2 VA and zero sequence (V o ) components of the voltage.
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SPECIFICATIONS ccontinuedl 250 Vdc - make and carry 30 A for 0.2 seconds, carry OVER/UNDERVOLTAGE COMPARATOR 7 A continuously, break 0.1 A. The scaled, single-phase signal is compared with the respective front panel pickup setting. If the magnitude 500 Vdc - make and carry 15 A for 0.2 seconds, carry of the ac signal is above the overvoltage pickup setting 7 A continuously, break 0.1 A.
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� � � 2 0 � 100 0 <f) <fJ <J) <f) "' � � � >- N O MI N F R O M E N C E DIF f E R :; s N O M IN F R O M E N C E DIF F E R...
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CONNECTIONS FIGURE DELTA VOLTAGE SENSING FIGURE WYE VOLTAGE SENSING LEGEND: VOLTAGE PHASE SEQUENCE 27/59 UNDER/OVERVOLTAGE BREAKER AUXILIARY CONTACTS 52 TC BREAKER TRIP COIL TIMED FIGURE CONTROL CIRCUITS...
Plug To allow testing of the relay without removing system DOD- DOD- DDDDD wiring, order one test plug, Basler Electric part number 10095. If option 3-1 through 3-8 has been specified, order two test plugs. Complete the style number by selecting one feature...
STYLE NUMBER IDENTIFICATION CHART [[100-DDD-DDDDD MODEL NO. TIMING OPTION 1 SENSING INPUT OPTION 3 OUTPUT TARGET TYPE <Negative Sequence) (Undervoltagel Three-Phase El One Relay: None A 1) Instantaneous None None Voltage 47N-NO One Aux. Output Inverse A) One Internally Instantaneous Line-to-Line Fl Two Relays: Relay: 4 7N-NO...
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