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Basler BE1-59NC Instruction Manual

Neutral overvoltage relay
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Publication: 9 2794 00 990
Revision: A
01/98

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Summary of Contents for Basler BE1-59NC

  • Page 1 +05647%6+10/#07#. 0'764#.18'481.6#)'4'.#; $'0% Publication: 9 2794 00 990 Revision: A 01/98...
  • Page 2 INTRODUCTION This Instruction Manual provides information concerning the operation and installation of the BE1-59NC Neutral Overvoltage Relay. To accomplish this, the following is provided. Specifications Functional characteristics Mounting Information Connections Testing 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.
  • Page 3 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. 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.

  • Page 4: Table Of Contents

    CONTENTS Section 1 GENERAL INFORMATION General ..........1-1 Application .
  • Page 5 CONTENTS - Continued Section 6 MAINTENANCE General ..........6-1 Storage .

  • Page 6: General Information

    Unit dielectric failure. Capacitor bank insulator failure. Blown fuses. BE1-59NC Neutral Overvoltage Relays protect for overvoltages due to internal voltage shifts that occur as a result of these types of failures. APPLICATION Capacitor banks are widely used by utilities to maintain specified system voltage. Addition of capacitive loads at appropriate points on the system compensate for heavy inductive loading that normally tends to reduce voltage.

  • Page 7: Input Sensing

    Voltage differentials between the normal capacitor bank status and that of one blown fuse are very small. However, BE1-59NC Neutral Overvoltage Relays are sensitive enough to differentiate between these conditions and act decisively.

  • Page 8: Alarms And Outputs

    Style number identification chart (Figure 1-2) defines the electrical characteristics and operational features included in BE1-59NC Neutral Overvoltage Relays. For example, if the model number of the relay was BE1- 59NC, and the style number was A5E-E2J-C0S1F, the device would have the following features:...

  • Page 9: Specifications

    BE1-59NC General Information Figure 1-2. Style Number Identification Chart SPECIFICATIONS BE1-59NC Neutral Overvoltage Relays have the following features and capabilities. Voltage Sensing Inputs Maximum continuous rating: 360 Vac for 100/120 Vac input, 480 Vac for 200/240 Vac input, with a maximum burden of 2 VA.
  • Page 10 BE1-59NC General Information Pickup Accuracy Ranges 1, 3, 5, or 7 ±2.0% or 100 millivolts, whichever is greater. Ranges 2, 4, 6, or 8 ±2.0% or 200 millivolts, whichever is greater. Dropout 98% of pickup within 7 cycles. Timing Characteristics...

  • Page 11: Characteristic Curves

    Figures 1-3 (drawing number 99-1510) and 1-4 (drawing number 99-1545) illustrate the overvoltage inverse time curves for this relay. To order a full-size drawing on transparent paper (vellum) of these characteristic curves, contact Customer Service Department of the Power Systems Group, Basler Electric, and request the appropriate drawing number.
  • Page 12 BE1-59NC General Information Figure 1-3. Overvoltage Inverse Time Curves, Low Ranges (Drawing Number 99-1510)
  • Page 13 BE1-59NC General Information Figure 1-4. Overvoltage Inverse Time Curves, High Ranges (Drawing Number 99-1545)

  • Page 14: Controls And Indicators

    SECTION 2 CONTROLS AND INDICATORS GENERAL Table 2-1 lists and describes the controls and indicators of BE1-59NC Ground Fault Overcurrent Relays. Table 2-1. Controls and Indicators (Refer to Figure 2-1) Letter Control or Indicator Function or Indicator OVERVOLTAGE 1 PICKUP...
  • Page 15 BE1-59NC Controls and Indicators Figure 2-1. Location of Controls and Indicators.

  • Page 16: Functional Description

    SECTION 3 FUNCTIONAL DESCRIPTION GENERAL BE1-59NC Neutral Overvoltage Relays are solid state digital devices that detect ground faults and neutral overvoltages. Figure 3-1 illustrates the overall operation of the relay and the following paragraphs describe the functional description. Figure 3-1. Functional Block Diagram...

  • Page 17: Overvoltage Comparator

    BE1-59NC Functional Description Overvoltage Comparator Each overvoltage comparator circuit receives a sensing voltage from the bandpass filter and a reference voltage from the front panel setting. When the input exceeds the setting reference, the comparator output enables the timing circuit and the OVERVOLTAGE PICKUP LED turns ON.

  • Page 18: Installation

    Visually inspect the relay for damage that may have occurred during shipment. If there is evidence of damage, immediately file a claim with the carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric, Highland, Illinois.
  • Page 19 BE1-59NC Installation Figure 4-1. S1 Case, Panel Drilling Diagram, Semi-Flush Mounting Figure 4-2. S1 Case, Outline Dimensions, Front View...
  • Page 20 BE1-59NC Installation Figure 4-3. S1 Case, Double-Ended, Semi-Flush Mounting, Side View...
  • Page 21 BE1-59NC Installation Figure 4-4. S1 Case, Double-Ended, Semi-Flush Mounting, Outline Dimensions, Rear View...
  • Page 22 BE1-59NC Installation Figure 4-5. S1 Case, Double-Ended, Projection Mounting, Panel Drilling Diagram, Rear View...
  • Page 23 BE1-59NC Installation Figure 4-6. S1 Case, Double-Ended, Projection Mounting, Rear View...
  • Page 24 BE1-59NC Installation Figure 4-7. S1 Case, Double-Ended, Projection Mounting, Side View...

  • Page 25: Connections

    BE1-59NC Installation CONNECTIONS NOTE Be sure the relay case is hard-wired to earth ground with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the relay case. When the relay is configured in a system with other protective devices, it is recommended to use a separate lead to the ground bus from each relay.
  • Page 26 BE1-59NC Installation Figure 4-9. Typical Protection Methods...
  • Page 27 BE1-59NC Installation Figure 4-10. Typical Internal Connections 4-10...

  • Page 28: Testing

    SECTION 5 TESTING GENERAL Results obtained from these procedures may not fall within specified tolerance. When evaluating results, consideration should be given to the following prominent factors. Inherent error of the test equipment used. Inherent inconsistency or repeatability of the testing method. Tolerance level and accuracy of components used in the test setup.

  • Page 29: Typical Test Setup Timing Option E2

    BE1-59NC Testing Figure 5-1. Typical Test Setup Timing Option E2...
  • Page 30 BE1-59NC Testing Figure 5-2. Typical Test Setup Timing Options D1 Or D2...

  • Page 31: D1 Timing Option

    BE1-59NC Testing E2 Timing Option - continued Step 5. Set OVERVOLTAGE 1 TIME DIAL to 010. Monitor the output terminals indicated in Figure 1 for OVERVOLTAGE 1. Remove, then reapply the overvoltage at case terminals 6 and 7. Observe the time registered by the counter. Time must equal the setting ±100 milliseconds or 2%, whichever is greater.
  • Page 32 BE1-59NC Testing Table 5-1. Inverse Time Overvoltage Levels And Delays For Input Options TIME DIAL Input Option Volts Volts (Style NO. Pickup 50/60 Hz 50/60 Hz Over Volts @  Volts @  2nd Digit) 50/60 Hz Pickup 5 @ 0 13 @ 180 0.612...

  • Page 33: D2 Timing Option

    BE1-59NC Testing Step 15. Set OVERVOLTAGE 2 TIME DIAL to 001 and apply to case terminals 6 and 7, a voltage that is 10% greater than the value applied in Step 13. Step 16. Monitor the output terminals indicated in Figure 5-1 for OVERVOLTAGE 2. Remove, then reapply the overvoltage at case terminals 6 and 7.
  • Page 34 BE1-59NC Testing Step 10. Set the OVERVOLTAGE 1 TIME DIAL to 88. Step 11. Reset the timer. Turn on PS1. While monitoring the output terminals indicated in Figure 5-1 for OVERVOLTAGE 1, initiate PS2 and record the time delay. Verify that the time is within 5.0% or 25 milliseconds (whichever is greater) of the time shown in Table 5-1.
  • Page 35 TEST PLUG Test plugs (Basler part number 10095 or G.E. part number 12XLA12A1) provide a quick, easy method of testing relays without removing them from their case. A test plug is simply substituted for the connection plug.
  • Page 36 SECTION 7 MANUAL CHANGE INFORMATION Table 7-1. Substantive Changes In This Manual To Date Are Summarized Below. Revision Summary of Changes Corrected voltage sensing Input range in Specifications and throughout the manual. Changed Figure 1-3, Overvoltage Inverse Time Curves to divide the curves for low ranges (sensing input ranges 1, 3, 5, and 7) and high ranges (sensing input ranges 2, 4, 6, and 8).

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