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Basler BE1-87G Instruction Manual

Variable percentage differential relay
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INSTRUCTION MANUAL
FOR
VARIABLE PERCENTAGE
DIFFERENTIAL RELAY
BE1-87G
A
SWITCH
A
B
C
D
E
F
G
POSITION
AMPS
0.02
0.03
0.04
0.08
0.1
0.16
0.32
POWER
BE1-87G
GENERATOR DIFFERENTIAL RELAY
Style No. G2E A1J A0C0F
R
Serial No. H123456789101
A
B
C
PUSH TO
ENERGIZE
OUTPUT
CAUTION: UPPER CONNECTION PLUG MUST BE IN PLACE PRIOR TO
INSERTING OR REMOVING LOWER CONNECTION PLUG.
P0046-18
Publication: 9170800990
Revision: M
03/10
*9170800990*
 

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Summary of Contents for Basler BE1-87G

  • Page 1 INSTRUCTION MANUAL VARIABLE PERCENTAGE DIFFERENTIAL RELAY BE1-87G SWITCH POSITION AMPS 0.02 0.03 0.04 0.08 0.16 0.32 POWER BE1-87G GENERATOR DIFFERENTIAL RELAY Style No. G2E A1J A0C0F Serial No. H123456789101 PUSH TO ENERGIZE OUTPUT CAUTION: UPPER CONNECTION PLUG MUST BE IN PLACE PRIOR TO INSERTING OR REMOVING LOWER CONNECTION PLUG.
  • Page 3 NOTE Be sure that the BE1-87G 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 BE1-87G is configured in a system with other devices, it is recommended to use a separate lead to the ground bus from each unit.
  • Page 4 United States and/or other countries. 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.
  • Page 5 REVISION HISTORY The following information provides a historical summary of the changes made to the BE1-87G instruction manual (9170800990). Revisions are listed in reverse chronological order. Manual Revision and Date Change  M, 03/10 Changed the sensing input range specifications for pickup accuracy in Section 1.
  • Page 6 Changed operational test procedure in Section 5.  A, 05/86 Added qualifications to specifications of Section 1.  Revised isolation test and dielectric test information in specifications of Section 1.  —, 12/85 Initial release BE1-87G Introduction 9170800990 Rev M...
  • Page 7 SECTION 1 ● GENERAL INFORMATION ....................1-1 SECTION 2 ● CONTROLS AND INDICATORS ..................2-1 SECTION 3 ● FUNCTIONAL DESCRIPTION ................... 3-1 SECTION 4 ● INSTALLATION ........................4-1 SECTION 5 ● TESTING AND SETTING ....................5-1 9170800990 Rev M BE1-87G Introduction...
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  • Page 9: Table Of Contents

    GOST-R Certification ......................... 1-7 Figures Figure 1-1. Typical Single-Phase Application Scheme ................1-2 Figure 1-2. Typical Three-Phase Application Scheme ................1-2 Figure 1-3. Style Number Identification Chart ................... 1-4 Tables Table 1-1. Power Supply Types ........................ 1-5 9170800990 Rev M BE1-87G General Information...
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  • Page 11: Section 1 ● General Information

    BE1-87G relays typically trip a lockout (86) relay which in turn trips the generator breaker and, when present, the field and/or neutral breakers.

  • Page 12: Figure 1-1. Typical Single-Phase Application Scheme

    Figure 1-1. Typical Single-Phase Application Scheme Figure 1-2. Typical Three-Phase Application Scheme BE1-87G General Information 9170800990 Rev M...

  • Page 13: Variable Restraint Characteristic

    87G provides a restraint factor that is proportional to input current when the restraining current (I ) is greater than nominal (5 Aac for sensing input range 1 or 1 Aac for sensing input range 2). The BE1-87G compares the protected zone sensed input and output currents. The lesser of the two sensed current levels becomes the restraining current.

  • Page 14: Specifications

    Figure 1-3. Style Number Identification Chart SPECIFICATIONS BE1-87G relays have the following features and capabilities. Current Sensing Inputs Sensing Input Range 1 Nominal Rating: 5 Aac Maximum Continuous Rating: 10 Aac 1 Second Rating: 250 Aac Frequency Range: 45 to 65 Hz <0.05 Ω...

  • Page 15: Pickup

    230 Vac 90 to 270 Vac 9.20 VA ∗ The type L power supply initially requires 14 Vdc to begin operating. Once operating, the voltage may be reduced to 12 Vdc and operation will continue. 9170800990 Rev M BE1-87G General Information...

  • Page 16: Output Contacts

    Single-Phase Sensing Units: 14.3 lb (6.5 kg) maximum Three-Phase Sensing Units: 19.2 lb (8.7 kg) maximum Case Size All units are supplied in an S1 case size. See Section 4, Installation for case dimensions. BE1-87G General Information 9170800990 Rev M...

  • Page 17: Agency Recognition

    UL Recognition: UL recognized per Standard 508, File E97033 NOTE: Output contacts are not UL recognized for voltages greater than 250 volts. GOST-R Certification GOST-R certified per the relevant standards of Gosstandart of Russia. 9170800990 Rev M BE1-87G General Information...
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  • Page 19: Table Of Contents

    SECTION 2 ● CONTROLS AND INDICATORS TABLE OF CONTENTS SECTION 2 ● CONTROLS AND INDICATORS ..................2-1 GENERAL .............................. 2-1 Figures Figure 2-1. Controls and Indicators ......................2-1 Tables Table 2-1. Control and Indicator Descriptions ................... 2-1 9170800990 Rev M BE1-87G Controls and Indicators...
  • Page 20 This page intentionally left blank. BE1-87G Controls and Indicators 9170800990 Rev M...
  • Page 21 SECTION 2 ● CONTROLS AND INDICATORS GENERAL BE1-87G controls and indicators are illustrated in Figure 2-1 and described in Table 2-1. Figure 2-1. Controls and Indicators Table 2-1. Control and Indicator Descriptions Locator Description Sensitivity Switch. This thumbwheel switch has seven positions labeled A through G and sets the desired level of operating current that will cause the relay to trip.
  • Page 22 This page intentionally left blank. BE1-87G Controls and Indicators 9170800990 Rev M...
  • Page 23 SECTION 3 ● FUNCTIONAL DESCRIPTION TABLE OF CONTENTS SECTION 3 ● FUNCTIONAL DESCRIPTION ................... 3-1 INTRODUCTION ........................... 3-1 BE1-87G FUNCTION BLOCKS ......................3-1 Current Sensing Inputs ........................3-1 Stabilizing Reactor ..........................3-1 Band-Pass Filters ..........................3-2 Comparator ............................3-3 Output Relays ............................. 3-3 Target Indicators (Optional)........................
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  • Page 25: Section 3 ● Functional Description

    Sensing current for each monitored phase is provided by two user-provided, system CTs with secondary windings that match the BE1-87G’s sensing input range. BE1-87G relays with sensing input range 1 (style x1x-xxx-xxxx) require CTs with 5 Aac secondary windings. Relays with sensing input range 2 (style x2x- xxx-xxxx) require CTs with 1 Aac secondary windings.

  • Page 26: Band-Pass Filters

    (I ). The restraint current is scaled for a 50% slope above nominal input current (5 Aac for sensing input range 1 or 1 Aac for sensing input range 2). BE1-87G Functional Description 9170800990 Rev M...

  • Page 27: Comparator

    The main output relay contacts are either normally-open or normally-closed and are accessed at case terminals 1 and 10. Normally-open contacts are provided on BE1-87G relays with a style number of xxE- xxx-xxxxx and normally-closed contacts are provided on relays with a style number of xxG-xxx-xxxxx.

  • Page 28: Output Test Pushbutton

    A front panel LED power indicator lights to indicate that the power supply is functioning properly. Style number designations and input voltage ranges for the available power supply models are provided in Section 1, General Information. BE1-87G Functional Description 9170800990 Rev M...

  • Page 29: Section 4 ● Installation

    Figure 4-15. Typical DC Control Connections ..................4-16 Figure 4-16. Single-Phase Sensing Connections ..................4-17 Figure 4-17. Three-Phase Sensing Connections, Wye Connected Generator ........4-18 Figure 4-18. Three-Phase Sensing Connections, Delta Connected Generator ........4-19 9170800990 Rev M BE1-87G Installation...
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  • Page 31 If there is any evidence of shipping damage, file a claim with the carrier and notify Basler Electric. If the relay won’t be installed immediately, store it in its original shipping carton in a moisture- and dust- free environment.
  • Page 32 Figure 4-1. Panel Cutting and Drilling Dimensions, Semi-Flush Mounting, Double- or Single-Ended Case BE1-87G Installation 9170800990 Rev M...
  • Page 33 Figure 4-2. Panel Drilling Dimensions, Projection Mounting, Double-Ended Case 9170800990 Rev M BE1-87G Installation...
  • Page 34 Figure 4-3. Panel Drilling Dimensions, Projection-Mounting, Single-Ended Case BE1-87G Installation 9170800990 Rev M...
  • Page 35 D2853-22 06-15-99 Figure 4-4. Outline Dimensions, Side View, Semi-Flush Mounted, Double-Ended Case 9170800990 Rev M BE1-87G Installation...
  • Page 36 D2853-23 06-15-99 Figure 4-5. Outline Dimensions, Side View, Semi-Flush Mounted, Single-Ended Case BE1-87G Installation 9170800990 Rev M...
  • Page 37 Figure 4-6. Outline Dimensions, Side View, Projection Mounted, Double-Ended Case 9170800990 Rev M BE1-87G Installation...
  • Page 38 CASE DETAIL A-A SHOWING THE ADDITION OF WASHERS OVER THE BOSS TO TIGHTEN THE RELAY AGAINST THE PANEL. P0002-18 12-07-01 Figure 4-7. Outline Dimensions, Side View, Projection Mounted, Single-Ended Case BE1-87G Installation 9170800990 Rev M...
  • Page 39 Figure 4-8. Outline Dimensions, Rear View, Double-Ended Mounting Case 9170800990 Rev M BE1-87G Installation...
  • Page 40 Figure 4-9. Outline Dimensions, Rear View, Single-Ended Mounting Case 4-10 BE1-87G Installation 9170800990 Rev M...
  • Page 41 Figure 4-10. Outline Dimensions, Front View, Case Cover 9170800990 Rev M BE1-87G Installation 4-11...
  • Page 42 Figure 4-11. Overall Dimensions, Stabilizing Reactor Figure 4-12. Outline Dimensions, Side View, Semi-Flush Mounted Case with Attached Stabilizing Reactor 4-12 BE1-87G Installation 9170800990 Rev M...
  • Page 43 Typical sensing current connections for a single-phase application are shown in Figure 4-16. Three-phase sensing current connections are illustrated in Figures 4-17 and 4-18. Figure 4-17 shows the sensing inputs connected in a wye configuration. Figure 4-18 shows the sensing inputs connected in a delta configuration. 9170800990 Rev M BE1-87G Installation 4-13...
  • Page 44 Figure 4-13. Internal Connections/Terminal Assignments, Single-Phase Relay 4-14 BE1-87G Installation 9170800990 Rev M...
  • Page 45 Figure 4-14. Internal Connections/Terminal Assignments, Three-Phase Relay 9170800990 Rev M BE1-87G Installation 4-15...
  • Page 46 Figure 4-15. Typical DC Control Connections 4-16 BE1-87G Installation 9170800990 Rev M...
  • Page 47 Figure 4-16. Single-Phase Sensing Connections 9170800990 Rev M BE1-87G Installation 4-17...
  • Page 48 Figure 4-17. Three-Phase Sensing Connections, Wye Connected Generator 4-18 BE1-87G Installation 9170800990 Rev M...
  • Page 49 Figure 4-18. Three-Phase Sensing Connections, Delta Connected Generator 9170800990 Rev M BE1-87G Installation 4-19...
  • Page 50 MAINTENANCE BE1-87G relays require no preventive maintenance other than the periodic inspection of the relay case and stabilizing reactor terminal connections to ensure that they are clean and tight. If repairs are needed, contact the Technical Sales Support department at Basler Electric for assistance.
  • Page 51 Figure 5-5. Extended Restraint Operating Characteristic ................5-6 Figure 5-6. Pickup Response Timing ......................5-6 Figure 5-7. Motor Differential Application ....................5-9 Figure 5-8. Generator Differential Application ..................5-10 Tables Table 5-1. Recommended Pickup Settings ....................5-8 9170800990 Rev M BE1-87G Testing and Setting...
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  • Page 53: Section 5 ● Testing And Setting

    The relay case must be hard-wired to earth ground with no smaller than 12 AWG copper wire. A separate ground lead is recommended for each device. OPERATIONAL TEST PROCEDURE The procedures that follow verify proper operation of the BE1-87G relay CAUTION During testing, do not apply a continuous operate current greater than 3 Aac.

  • Page 54: Equipment Required

    Figure 5-1. Location of Stabilizing Reactor Bypass Terminals (Single-Phase Relays) Equipment Required Because of the speed and sensitivity of the BE1-87G, test equipment with appropriate accuracy and stability must be used to test the sensitivity switch settings. For example, at the most sensitive switch setting (0.1 ampere), the relay monitors a current difference that is only 1% for a sensing input of 10...

  • Page 55: B-Phase And C-Phase Trip And Dropout Test

    Perform the following steps to test the trip and dropout accuracy of phases B and C of relays with three- phase sensing (style number Gxx-xxx-xxxxx). Perform steps 1 through 7 under Single-Phase/A-Phase Trip and Dropout Test for phases B and C. 9170800990 Rev M BE1-87G Testing and Setting...
  • Page 56 Figure 5-3. Operating Characteristics, Relay Style x1x-xxx-xxxxx BE1-87G Testing and Setting 9170800990 Rev M...
  • Page 57 Figure 5-4. Operating Characteristics, Relay Style x2x-xxx-xxxxx 9170800990 Rev M BE1-87G Testing and Setting...
  • Page 58 Range 1 Range 2 RESTRAINT CURRENT (AMPERES) D2354-14 Figure 5-5. Extended Restraint Operating Characteristic Figure 5-6. Pickup Response Timing BE1-87G Testing and Setting 9170800990 Rev M...

  • Page 59: Target Indicator Test

    I” Sub-transient current Total number of CT turns Number of CT turns in use (for multi-ratio type) One-way lead resistance in ohms Relay restraint circuit resistance in ohms CT winding resistance in ohms 9170800990 Rev M BE1-87G Testing and Setting...

  • Page 60: Ct Quality

    Inequality (1) is met with CT #2, but not with CT #1. However, since the locked rotor current is only 4.8 times the CT rating (versus the assumption of 20 times rated for inequality (1)), the application is suitable. SFR = (100 ÷ 50) × (0.36 ÷ 0.19) = 3.8 BE1-87G Testing and Setting 9170800990 Rev M...

  • Page 61: Setting Example 2

    CT #2 has a C classification. The T classification indicates that the CT has significant secondary leakage inductance which somewhat degrades the transient performance. This is a concern during motor starting because a slowly decaying offset component develops in at least one phase. 9170800990 Rev M BE1-87G Testing and Setting...
  • Page 62 Figure 5-8. Generator Differential Application 5-10 BE1-87G Testing and Setting 9170800990 Rev M...
  • Page 64 ROUTE 143, BOX 269 HIGHLAND, IL 62249 USA http://www.basler.com, info@basler.com PHONE +1 618-654-2341 FAX +1 618-654-2351...

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