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XRI1-ER

– Earth fault relay for isolated

and compensated mains

Manual XRI1-ER (Revision C)

Summary of Contents for XRI1-ER

Page 1: ...XRI1 ER Earth fault relay for isolated and compensated mains Manual XRI1 ER Revision C...

Page 2: ...ard reserves the right to update any portion of this publication at any time Information provided by Woodward is believed to be correct and reliable However no responsibility is assumed by Woodward un...

Page 3: ...Setting of default parameters 21 5 5 2 Blocking the protection function 21 5 5 3 Assignment of the signal relays 21 5 6 Display of software version and test TRIP 22 5 7 Low high range of functions blo...

Page 4: ...ing time 31 7 4 6 Checking the high set element of the relay 31 7 4 7 Checking the external blocking and reset functions 32 7 4 8 Test of the CB failure protection 32 7 5 Primary injection test 33 7 6...

Page 5: ...Relay variant XRI1 ER with directional current sensing is a selective earth fault protection and is normally used in ring systems networks with parallel feeders and in complex meshed systems Very ofte...

Page 6: ...asuring with directional earth current measuring XR type Numerical display of setting values actual measured values and their active reactive components memorized fault data etc Withdrawable modules w...

Page 7: ...before will be blocked if an auxiliary voltage is connected to terminals C1 C1L or C1 C1H See chapter 6 2 12 3 1 3 External reset input By applying the aux voltage C2 C2L or C2 C2H indication and outp...

Page 8: ...s and measuring values can be achieved by HTL PL Soft4 which will be provided on request together with the relay The XRI1 ER can be connected to other units of PROFESSIONAL LINE via interface If there...

Page 9: ...ion and operation elements The front plate of protection relays comprises the following operation and indication elements Alphanumerical display 4 Digits Push buttons for setting and other operations...

Page 10: ...solated sin or compensated cos networks SIN COS SELECT RESET Tripping protection switch failure protection CBFP After fault tripping Nominal frequency f 50 f 60 SELECT RESET Switch over LED flash No L...

Page 11: ...the characteristic points on the setting curves support the comfortable setting menu se lection In accordance with the display 5 LEDs for earth fault overcurrent indicate the corresponding menu point...

Page 12: ...cated in an EPROM Electrically Programmable Read Only Memory With this program the CPU of the micro controller calculates the three phase currents and ground current in order to detect a possible fau...

Page 13: ...formers supplying the relay Earth faults beyond the current transformers i e on the consumer or line side will not be detected Figure 4 1 Generator stator earth fault protection 4 3 2 System earth fau...

Page 14: ...thods depending on the neutral point connection method The residual voltage UE required for determining earth fault direction can be measured in three different ways depending on the voltage transform...

Page 15: ...rent IW resistive component of zero sequence current By calculating the reactive current component sin adjustment and then comparing the phase angle in rela tion to the residual voltage UE the ER XR r...

Page 16: ...be determined from the reactive current components be cause the reactive part of the earth current depends upon the compensation level of the mains The ohmic component of the total current calculated...

Page 17: ...y by pressing approx 3s As for an individual case relay version D the push button can also be operated when the front cover of the re lay is closed and sealed with lead Push buttons are used for in de...

Page 18: ...cation after pickup tripping All of the faults detected by the relay are indicated on the front plate optically Here not only the faults are indi cated but also the faulty phase s and the protection f...

Page 19: ...t relays will be reset automatically after the fault has been cleared e g when the fault current is inter rupted Dip switch 3 ON All output relays remains activated and must be reset after fault clear...

Page 20: ...word is entered by any combination of the push buttons SELECT ENTER After the new password is given the dip switch 1 must be switched off 5 4 2 Using the password Step by step a new relay setting is m...

Page 21: ...reached The corresponding LED lights up The actual set value of the selected parameter is indicated on the display The indicated set value can then be changed by pressing push buttons in decrementing...

Page 22: ...lays stay energized until manual reset The protection functions are not affected 5 7 Low high range of functions blocking and reset The XRI1 ER have a wide range power supply unit al lowing to choose...

Page 23: ...l voltage measurement can be chosen see chapter 4 4 6 1 2 Pickup value for residual voltage UE Regardless of the preset earth current an earth fault is only identified if the residual voltage exceeds...

Page 24: ...f forward faults If the tripping times for forward and reverse faults are set to the same values the device will trip with the same time delay in both cases i e without determination of the direction...

Page 25: ...of the activation storage FLSH NOFL If after an activation the existing current drops again below the pickup value e g IE without a trip has been ini tiated LED I signals that an activation has occurr...

Page 26: ...lays is similar to the setting of parameters however only in the assign ment mode The assignment mode can be reached only via the blocking mode By pressing push button SELECT RESET in blocking mode ag...

Page 27: ...alarm X _ _ _ 4 IIE green tIE V tripping X 1 _ _ _ tIE green IE R IE alarm X _ _ _ 4 IE red tIE R tripping X 1 _ _ _ tI red tCBFP tripping _ _ _ _ Table 6 2 Example of assignment matrix of the output...

Page 28: ...uit to the circuit breaker if tripping is not desired By pressing the push button TRIP once the display shows the first part of the software version of the relay e g D08 By pressing the push button TR...

Page 29: ...d Figure 7 1 shows an example of a single phase test circuit with adjustable voltage and current energiz ing the XRI1 ER relay under test For testing a relay with directional feature one of the input...

Page 30: ...ponding display values For relay assignment Parameter Relays IE Alarm V _2__ IE Alarm R __3_ Parameter Setting IE 0 2 x In tIE V EXIT tIE R EXIT sin cos sin Table 7 2 Necessary parameter setting and r...

Page 31: ...n must not exceed 3 of the set oper ating value or 0 3 In Furthermore gradually decrease the current until the re lay resets i e the alarm output relay I is de energized Check that the resetting curre...

Page 32: ...xternal reset input of the relay terminals C2 C2L or C2 C2H The display and LED indications should be reset immediately 7 4 8 Test of the CB failure protection For testing the tripping time a test cur...

Page 33: ...cked and the actual power factor may be calculated and compared it with the cos meter indication on the switchboard to verify that the relay is connected to the power system with the cor rect polarity...

Page 34: ...s 100 x IN for 10 s 30 x IN continuously 4 x IN Thermal withstand in voltage circuit continuously 1 5 x UN 8 2 Common data Dropout to pickup ratio 97 Returning time 30 ms Time lag error class index E...

Page 35: ...0 001 0 002 0 005 0 01x IN 0 01 0 02 0 05 0 1 x IN 5 from set value or 0 3 IN ER 0 03 IN XR tIE 0 1 4 5 IN EXIT XR 0 05 2 0 s 0 01 s 0 02 s 0 05 s 3 or 15 ms UE UN 100 V 3 PHA e n 1 70 V 1 1 1 120 V 1...

Page 36: ...mechanical life span 30 x 106 operating cycles electrical life span 2 x 105 operating cycles at 220 V AC 6 A Contact material silver cadmium oxide AgCdO 8 5 Power supply Auxiliary voltage 16 360 V DC...

Page 37: ...V 1 2 50 s 0 5 J High frequency interference test voltage inputs and outputs between themselves and to the relay frame as per EN 60255 6 IEC 255 6 2 5 kV 1 MHz Electrical discharge ESD test as per EN...

Page 38: ...ct to change without notice 8 8 Relay case Relay XRI1 ER is designed to be fastened onto a DIN rail acc to DIN EN 50022 the same as all units of the PROFESSIONAL LINE The front plate of the relay is p...

Page 39: ...erial interface XRI1 R 1 Earth current measuring for isolated compensated sys tems very sensitive for isolated compensated systems E X Rated current in earth circuits 1 A 5 A 1 5 Directional feature i...

Page 40: ...h fault element x IN 0 01 x IN ER 0 1 XR IE Warn Trip changeover trip tIE V tIE R Trip delay time for earth fault element s 0 05 IE Pickup value for high set element x IN 0 01 x IN ER 0 1 XR tIE V tIE...

Page 41: ...tual setting Default setting Actual setting Default setting Actual setting Default setting Actual setting IE alarm V X tIE tripping V X IE alarm R X tIE tripping R X IE alarm V X tIE tripping V X IE a...

Page 42: ...5 P O Box D 47884 Kempen Germany Phone 49 0 21 52 145 1 Internet www woodward com Sales Phone 49 0 21 52 145 216 or 342 Telefax 49 0 21 52 145 354 e mail salesEMEA_PGD woodward com Service Phone 49 0...

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