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Related Manuals for GE IBCG51E21
Summary of Contents for GE IBCG51E21
- Page 1 GEH-2032 POWER SYSTEMS Courtesy of NationalSwitchgear.com...
- Page 2 GEE-2022 Ground Relay Type Front View Rear View Fig. I Relay Removed Case Courtesy of NationalSwitchgear.com...
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Page 3: Operating Characteristics
INTRODUCTION Type relays are ground directional system generating cap- by the current relays used primarily for the protection of acity at the time of the fault. Very inverse time and feeders and transmission lines. They are available extremely inverse time relays should be used in with either inverse, very inverse or extremely in- cases where the fault current magnitude is depend- verse time characteristics. -
Page 4: Operating Time
Ground Directional Relay Type IBCG Typical Comparison of Current, Potential or Dual Polarization of Type Relay Fig. 2 Showing Effect of Local Ground Impedance operating coil circuits are shown in Table torque angle of degrees When current polarized, it operate at approxi- current polarizing coils have a rating of 5 amperes and a one (1) second rating of 150 amperes. - Page 5 Ground Directional Relay Type IBCG GEH-2032 an application, it may be necessary to connect a Tbe 0.2 ampere tap is for use with trip coils loading resistor parallel auxiliary operate on currents ranging from 0.2 up to relay coil to allow enough current to operate the 2.0 amperes at the control voltage.
- Page 6 Fig. 3 Internal Connections Relay Fig. Internal Connections (Front View) (Front View) Fig. 5 Internal Connections Relay Internal Connections Relay Fig. 6 (Front View) (Front View) Courtesy of NationalSwitchgear.com...
- Page 7 GEH-2032 Ground Directional Overcurrent Relay Type Internal Fig. B Internal Connections Fig. 7 (Front (Front View) Fig. External External Connections for IBCB Fig. 9 Ground Fault for Directional Fault Protection of Single Line Using Current Polarization Line Using Potential Polarization Courtesy of NationalSwitchgear.com...
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Page 8: Receiving, Handling And Storage
Ground Directional Relay Type Stationary Contact Assembly Moving Contact Assembly B Contact Support C Contact Tip L Mounting Screw D Contact An F Contact Brush Fig. II Gradient Contact Assembly For The Directional Unit RECEIVING, HANDLING AND STORAGE These relays, when not included as a part of a packing the relay in order that none of the parts are control panel will be shipped in cartons designed to injured or the adjustments disturbed. -
Page 9: Installation
Ground Directional Overcurrent Relay Type GEH-2032 The cup-like around a stationary central core. aluminum induction rotor is free to rotate in the The directional unit contacts which control the annular air gap between the poles and the core. time overcurrent unit, are shown in Fig. 11. They The poles are fitted with current operating, current are of the low gradient type specially constructed to polarizing, and potential polarizing coils. -
Page 10: Time Setting
Ground Directional Relay Type IBCG ADJUSTMENTS and 18. Note that the current values on these curves are given as multiples of the tap setting. That is, TARGET AND SEAL-IN UNIT for a given time dial setting, the time will be the same for 80 on the ampere tap as for 50... -
Page 11: Polarity Check
Ground Directional Relay Type IBCG GEH-2032 Fig. Test Connections for Checking Pickup and Test Connections for Checking Pickup and Fig. Operating Time of the Time Overcurrent Unit Using Operating Tine of the Time Overcurrent Unit Using Current Polarization Potential Polarization The relay has maximum torque at 60 degrees fag. -
Page 12: Contact Adjustment
. GEH-2032 Ground Directional Relay Type threaded core support. The upper bearing should to allow about inch end play to the To check the clearance between the iron and the inside of the rotor cup, press down on contact arm near the shaft, thus depressing spring-mounted jewel until the cup strikes the iron The shaft should move about inch. -
Page 13: Contact Cleaning
GEH-2032 Ground Directional Relay Type IBCG potential or current polarization, not both. The 50 turns to provide contact wipe. Tighten the locknut. ohm resistor should be replaced an adjustable Unwind the backstop screw turn and tighten the resistor capable of providing the current range locknut which secures the backstop screw to its listed in Table V relay rating in question. - Page 14 GEH-2032 Directional Relay IBCG Ground Overcurrent Fig . for the Very Inverse Time Overcurrent Unit Courtesy of NationalSwitchgear.com...
- Page 15 Ground Overcurrent Relay Type Fig. Time-Current Curves for the Extremely Inverse Time Courtesy of NationalSwitchgear.com...
- Page 16 Directional Overcurrent Relay Type IBCG GEH-2032 Ground PANEL LOCATION SEMI-FLUSH SURFACE NUMBERING OF STUDS VIEW) OUTLINE STUD VIEW SHOWING ASSEMBLY OF FOR SURFACE MTG. ON STEEL DRILLING FOR SEMI-FLUSH MOUNTING (FRONT VIEW) PANEL DRILLING FOR SURFACE MOUNTING RONT VIEW) F i g . O u t l i n e a n d P a n e l D r i l l i n g D i m e n s i o n s f o r T y p e Courtesy of NationalSwitchgear.com...
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