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GE CEY51A, Инструкция по эксплуатации

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Содержание CEY51A

Страница 1: ...Check figure 1 of this insert booklet for the contact circuit arrangement These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingenc...

Страница 2: ...SI 0 i R f URI3 LnnnJ TR 01 2 R2I 03 1 AOPER C2I TR 02 3 Rjuun 02Z3 VOPER 023 JRI2 R22 C22 TR 01 2 TR 03 1 TR 02 3 TR 01 2 TR 03 1 TR 02 3 3 r Ax Ax l i V M l w v V V V 7 0 5 I o O o o 8 10 6 2 X SHOR...

Страница 3: ...GEK 1275K INSTRUCTIONS MHO DISTANCE RELAY TYPE CEY51A GE Protection and Control 205 Great Valley Parkway Malvern PA 19355 1337 Courtesy of NationalSwitchgear com...

Страница 4: ...al Checks Mho Unit Electrical Tests Target Seal in 14 14 15 18 18 INSTALLATION PROCEDURE Location Mounting Connections Visual Inspection Mechanical Inspection Portable Test Equipment Electrical Tests...

Страница 5: ...rrier schemes When applying this relay for the protection of a given circuit i t is advantageous to set the relay on the highest basic minimum reach tap that will accomodate the desired reach setting...

Страница 6: ...ent schemes including straight distance protection directional comparison carrier protection permissive overreaching permissive and di rect underreaching transferred tripping and many different back u...

Страница 7: ...9 Percent Tap Setting Z Minimum Ohms 1 5 Z Zsec 2 19 ohms 0 80 50 The selection of the maximum torque angle for a first zone relay should depend primarily on accommodation of arc resistance Smaller m...

Страница 8: ...s of arc resistance for a fault at the ori gi n A rough estimate of the arc resistance that a relay will see for a multi phase fault is given by RA 3 130 where 130 three phase fault current flowing in...

Страница 9: ...units can be adjusted in 1 steps over a 10 1 range for any of the basic minimum reach settings listed in Table II by means of autotransformer tap leads on the tap blocks at the right side of the relay...

Страница 10: ...imum reach of the unit for a particular tap setting of the transactor TR 0I _2 primary Assuming finite values of E and IZT1 TE the balance point torque 0 will occur where cos 0 that is where the angle...

Страница 11: ...adjusted to have correct directional action under For faults in the non steady state low voltage and low current conditions tripping direction the contacts will remain open at zero volts between 0 and...

Страница 12: ...setting regardless of the tap setting However under dynamic conditions when the memory action is effective Figure 2 shows that an mho unit with a 3 ohm basic minimum reach and 100 tap setting will ope...

Страница 13: ...phase to neutral impedance expressed in secondary terms is determined by the following equation Tap Setting 100 Min Ohms Setting Cos 0 9 Z where Angle of maximum torque Power factor angle of fault imp...

Страница 14: ...T 9 8 0 89 8 7 Polarizing 1300 j680 4 5 4 5 1 0 3200 JO Restraint The restraint circuit burden and hence the total relay burden will decrease when the restraint tap setting is less than 100 The potent...

Страница 15: ...ws holds the connecting plugs in place The target reset mechanism is part of the cover assembly The relay case is suitable for either semi flush or surface mounting on all panels up to two inches thic...

Страница 16: ...ned in shipment and that the relay calibrations have not been disturbed indicates that readjustment is necessary refer to the section on SERVICING I f the examination or the test VISUAL INSPECTION Che...

Страница 17: ...and position the restraint taps according to Table XII in its upright position Use the following procedure in checking each unit With the current set at 5 amperes and the voltage across the relay vol...

Страница 18: ...00 90V 14 5 15 4 Top 01 2 3 0 100 14 15 13 16 17 5 Middle 02 3 3 0 100 13 16 17 18 19 20 7 Bottom 03 1 3 0 100 18 19 20 14 15 9 7 9 5 6 8 10 3000 45V 29 1 30 6 6 8 10 3000 45V 29 1 30 6 6 8 10 3000 45...

Страница 19: ...e angle of maximum torque impedance characteristic in Figure 6 shows that the ohmic reach of the unit should be the same at both 330 and 2700 and should be 0 866 times the reach at the angle of maximu...

Страница 20: ...g MOUNTING The relay should be mounted on a vertical surface drilling dimensions are shown in Figure 14 The outline and panel CONNECTIONS The internal connections of the CEY51A rel ay are shown in Fig...

Страница 21: ...d other equipment are similar to the schematic connections shown in Figure 12 except that the Type XLA test plug connections are now included Use of the source impedance R jXS simulating the condition...

Страница 22: ...1 0 934 0 951 24 88 87 12 86 6 85 3 83 2 81 1 78 0 5 From Table XI i t is seen that the angle of the impedance of the 6 ohm tap is Therefore 860 200 X 3 cos 86 60 5 4 ohms 2 Z relay 100 The calibratio...

Страница 23: ...n the case of the previous tests the load box that serves as the source impedance should be adjusted to allow approximately 10 amperes to flow in the fault circuit when the fault switch is closed Tap...

Страница 24: ...o unit at low currents This effect is shown in Figure 2 Determine the impedance and phase angle seen by the relays The calculated value should take into A shorter test that will check for most of the...

Страница 25: ...of maximum torque adjustment X13 03 1 NOTE Before making pickup or phase angle adjustments on the mho units the units should be allowed to heat up for approximately 15 minutes energized with rated vo...

Страница 26: ...relay as show in Figure 10 Set the restraint tap and the basic minimum reach taps in the positions shown in Table IX With current at 5 amperes and voltage at 120 volts set the phase shifter so that t...

Страница 27: ...have a secondary effect on the reach of the unit and vice versa Therefore to ensure accurate settings it is necessary to recheck the reach of a unit whenever its angle of maximum torque setting is cha...

Страница 28: ...uited on itself the contacts must remain open over the range of 0 30 amperes Should the MB unit fail to pass either test the core must be adjusted The core and coil assembly is shown in Figure 1 By us...

Страница 29: ...HO Unit in the CEY51A Relay Figure 8 8025039 Cross Section of Case and Cradle Block Showing Auxiliary Brush and Shorting Bar Figure 9 0178A7132 1 Internal Connection Diagram of the CEY51A Relay Front...

Страница 30: ...UNIT ANGLE Of MAXIMUM TORQUE C60 LA i U L ii V i 90 it ii tt it tr i STEADY STATE CHARACTERISTIC DYNAMIC CHARACTERISTIC T MHO RESTRAINT TAR SETTING y THREE PHASE FAULT CURRENT Z I KTO U TT I I t lli l...

Страница 31: ...r 10 20 1 14 6 CETvICEl DEVICE I NCI L M 0E5CS PTION 5Q NC TYPE TSI 21 Zl CFY 51A 1 3 PUACE 1ST CNF MHO RFIAY rt ix 0 1 2 M LTC TRl 2 I FHASE 1 2 TRANSACTOR 3L T 5Q r si TX 0 ETC RED 13 13 19 16 TARGE...

Страница 32: ...3 1 FRONT 5 Ft 3 R21 1 i 0 TR B OPER n Rll 01 2 w 9 5 E12 C21 15 OPER E B 1 POL POL TR 01 2 F h A 1 X2 X 2 Y T Figure 4 0195A4986 1 Schematic Connections of MHO Units in the CEY51A Relay Top View 30...

Страница 33: ...racTOP MGLE TT li Figure 5 0195A4987 Graphical Representation of MHO Unit Operating Principle 8 x 60 SETTIHG 0 75 0H S 7 e 5 4 3 1 8 OHMS 1 II I 4 Figure 6 0195A4988 Steady State Impedance Characteris...

Страница 34: ...03 2 5 Ui Z SETTING r I Z FAUG Z SETTING 25 o z 2 0 x l FAJLT 4 31 os a Z SETTING UJ p CL O J t I i 4 V 1 0 I 4 f t i t i B 4 i 1 4 4 I t t t r 4 4 1 I t 4 I 4 4 4 I 4 T i 5 t w f I 4 g EV iiSil 4 4 4...

Страница 35: ...CD CO o 0 c h C J 00 O zr 3 O m OJ 7 l CD O 3 h CO Q rv o on 0O CD 3 CO o n AUXILIARY BRUSH TERMINAL BLOCK SHORTING BAR 3 C Cu 3 3 Q CQ O CD 3 CD CD 3 Q NOTE AFTER ENGAGING AUXILIARY BRUSH CONNECTING...

Страница 36: ...u TR till 03 1 1 13 01 AOPER 03 1 AOPER 02 3T 3 1 01 2 C2 TR 02 3 02 3 AOPCR r22 Ht Rl2 C22 TR01 2 TR 03 1 TR 02 3 TR 01 2 TR 03 1 TR 02 3 o 02 o 03 r O O OH r r y y y y y y t 1 V V 3 0 9 o o 2 8 10 0...

Страница 37: ...VOLTAGE CONNECT LEAD TO RELAY STUDS AS FOLLOWS JUMPER RELAY STUDS UNIT LOCATION UNIT LEAD D LEAD A LEAD B LEAD C 6 8 10 7 5 TOP 01 2 14 15 13 16 17 6 8 10 9 18 19 20 7 MIDDLE 02 3 13 16 17 6 8 10 5 0...

Страница 38: ...GEK 1275 TWICE UNIT REACH AT TEST REACTOR ANGLE ZMIN Rl TAP R Figure 11 0195A4992 Diagram Showing Reach of the MHO Units at Angie of Test Reactor 36 Courtesy of NationalSwitchgear com...

Страница 39: ...PER RELAY STUDS UNIT CONNECT LEAD TO RELAY STUDS AS FOLLWS LOCATION LEAD A UNIT LEAD B LEAD C LEAD D 0 1 2 TOP 14 15 13 16 17 6 8 10 5 7 0 2 3 13 16 17 MIDDLE 18 19 20 6 8 10 9 7 03 1 18 19 20 6 8 10...

Страница 40: ...11 19 12 20 TOP TEST PLUG fi 04 04 4 K3 A uA 8 3 uA U 1 04 T I i 3 A 6 S o in 04 9 3 O A O G C 0 04 I I rd I 5 m c CO 9 S m s LT CO o 1 0 2 BOTTOM TEST PLUG 9 OC A 04 4 04 o I 1 8 r i l10 J i 8 S o 8...

Страница 41: ...ES O O 0 O 16MM 5 8 9 8 7 5 251MM 937 252MM 7 7 8 1 1 9 8MM 1 7 5 4 4MM 6 7 5 171MM L f L i i _ c 1 3 5 0 ItL _ 342MM 1 9 5 0 I 24lMM ifTi H x 0 0 t i 3 5 0 0 f F 19 75 502MM 15 562 396MM CUTbUT 1 9 8...

Страница 42: ...3RZHU 0DQDJHPHQW 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 www ge com indsys pm Courtesy of NationalSwitchgear com...

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