Siemens ISOLATED MULTI-DROP SG-6048-01 - Manuals

1 General Information Some applications require that the instantaneous element be active for phase, but not for ground, and vice versa. Other applications may require instantaneous tripping with no time overcurrent function. When the time or instantaneous function is not desired, this may be achieve...

1 General Information Page 4 Style Number Identification Chart for Siemens SCOR Relay SCOR D D [§] - � [i] D - � D D D � Power Supply E = N.O. Contacts K = 48 Vdc 0 = None 0 = None K = Single-Phase Current ® G = Three-Phase Current ® H = Three-Phase-with- J = 125 Vdc/120 Vac 1 = One lnst. Element CD...

1 General Information For example, if it is decided that three-phase-with -ground monitoring is required for an application, then the first character of the style number is H . The second character of the style number determines the range for overcurrent pickup. For example, Sensing Input Tap Range ...

2 Controls and Indicators 2.1 General Figure 3 shows the front panel of the SCOR relay with all the options installed except Option 1-2. All of the front panel controls and indicators are called out and assigned a l ocator letter. Table 2 supplies a description for each. Data is displayed c Q p 0 Pa...

2 Controls and Indicators Page 7 Locator Name A PHASE TAP selector B Timing indicators, phase c Range plate, phase 0 FUNCTION/OAT A display? Table 2. Controls and Indicators Function A ten-position switch that provides an incremental adjustmen t of the c u rrent pickup tap for all of the phases ( s ...

2 Controls and Indicators Page 9 Table 2. Controls and Indicators (continued) Locator L M N 0 p Q Name POWER indicator TARGET RESET switch ELEMENT targets TAP scaling chart FUNCTION targets TIME INST 1 INST 2/CLOSE (not illustrated) PUSH TO ENERGIZEOUTPUT 12/CLS (not illustrated) 11 n Function Red L...

3 Operation by Front Panel 3.1 General Once installed , and with its operating parameters established i n internal memory, t h e relay functions automatically t o protect the system from overcurrent conditions. Front panel operation of the relay permits configuring the registers that define the rela...

3 Operation by Front Panel Register Display Sequence 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20A 208 20C 21 22 * Register Display Abbreviation [onF Rddr bRUd p _f:d n_f: d P!:RP ni:RP p 1n I P 1n2 n 1n I n 1n2 Pcur n cur PPr I PSfc nPr 1 n Sfc PrRn nrRn dPr d 9 En 50 9 5 I 9 oul: bF [onF Ta...

3 Operation by Front Panel IMPORTANT NOTE If the installation is equ ipped with a Power Mon itor unit, the remai ning registers can be more easily configured using the Power Monitor unit. Refer to Siemens Power Monitor™ Display and Monitoring Unit (Manual SG-401 8-01 ). 3. 2.8 Setting the Time Dial ...

3 Operation by Front Panel end lessly while the relay remains in the DATA mode unless deliberately halted as described below. To stop the display at a particular register, step the display to the desired read-only register using the N EXT switch . (The registers will appear in the sequence of Table ...

3 Operation by Front Panel 3.4 Setting The Relay (Example) 3 . 4 . 1 Example Defined This hypothetical example has the following req uirements: Parameter For Phase For Ground Time over-current 4 . 7A 1 . 6A pickup: Pickup Range: High Low Curve shape: Very Inverse Inverse Time delay setting: 0.38 sec...

4 Installation and Testing 4.1 General When not shipped as part of switchgear, relay panel, circuit breaker or control, the relay is shipped in a sturdy carton to prevent damage during transit. Immed iately upon receipt of a relay, check the style number against the requisition and packing list to s...

4 Instal lation and Testing .......____ Mounting Panel SIDE VIEW FRONT VIEW Figure 4. Outline Dimensions {144.5) 2 5.69 �(72�) - - - - - --- - - - --- - - - - - - - - --- - - - - - - - - - - - - - - - 0 8.63 I I I I I ' I I . 8.25 {219.1) I I (209.6) 4.31 (109.5): ct i 4.13 : (104.8) i i I 0 - - ---...

4 Instal lation and Testing Page 1 9 @19@17@15@13@11 20 18 16 14 12 Overcurrent SOLID-STATE PROTECTIVE RELAY C��;��s� � COM(+)(-) GND 9 7 5 3 1 10@8@ 6@ 4@ 2@ REAR VIEW OF RELAY SHOWING ACTUAL POSITION OF TERMINALS ( + ) TRIP BUS (-)TRIP BUS BE1-51 SCOR FOR SENSING INPUT TERMINALS, SEE PRECEDING PAG...

4 Instal lation and Testing 4.6 Verification Testing 4.6.1 General The various test procedures which follow are intended to verify operation of the relay, and to set the various controls for a specific application. Each phase of a two-or three-phase relay may be tested as a sing le-phase device usin...

4 Instal lation and Testing NOTE Several proprietary test sets are marketed which combine the current source and timer, and include other features to simplify setup. 4 . 7.2 Preliminary Steps 1 . With the connecting plugs removed , connect the unit as shown in the following figure numbers: 1 st Digi...

4 Installation and Testing 4.7 . 3 Time Overcurrent Pickup Test (Continued) Verify time overcurrent pickup as follows: 1 . After performing the above preliminary steps, connect the input cu rrent source to terminals 7 and 8 on the relay case (Phase A). 2 . Set the PHASE TAP switch to position A . 3 ...

4 Installation and Testing 4.7.4 Timing Test The timing characteristics available by program ming the relay are illustrated in Figures A.1 through A. 1 6 . Output trip should occur as shown for any given TIME DIAL setting, to within 1 0% or 20 milliseconds (whichever is greater) . Verification of ti...

4 Installation and Testing 4.7.5 Instantaneous Overcurrent Pickup Test The phase current pickup of the relay will be set at the factory to operate on one of the two available ranges: H I G H or LOW. If ground current is mon itored , it will also be set for one ofthe two ranges. Determ ine which rang...

5 Maintenance 5.1 General Static devices require no preventive maintenance other than a periodic operational test (see Page 20) . If the relay fails to function properly, contact Siemens Customer Serv i c e . When returning the relay to the factory, ship the entire relay cradle assembly, preferably ...

6 R eferences 1 . EIA Standard: EIA 485. (Also known as the RS-485 Stan­ dard .) Published by Electronic Industries Association (April 1 983). 2 . Siemens Power Monitor™ Display and Monitoring Unit (Manual N o . SG-401 8-01 ) . 3 . Siemens SCOR Protocol. Page 26 4. S i e m e n s Isolated Multi-Drop™...

Appendix A T ime Overcu rrent Characteristic Curves Page 2 1 Figure A.1 through Figure A.16 illustrate the characteristic curves that are programmed into the nonvolatile memory of this relay. Refer to Table 1 on Page 5 for a listing of the 1 6 characteristic curves. Note that a drawing n umber is gi...

Appendix A Time Overc u r rent Characteristic C urves Page 2s (f) 0 z 0 (_) w (f) � w ::::2: i= lOO 200 100 10 10 10 10 50 40 lO 20 10 I • 1 .I .. 7 .I .5 . 4 T I M E 0 I A L 88 80 60 50 40 30 20 1 0 .01 .01 .07 . 01 .Oil .04 .OJ .02 .5 .1 .7 .I . I 1 J 4 5 • 1 • 1 1 0 M U LTI PLES O F P I CK U P SE...

Appendix A T ime Overcu rrent C haracteristic C urves Page 29 � z 0 (_) UJ (/) z UJ � F 200 100 10 10 70 10 � 40 0 I 7 • a 4 J I • 7 . . � .4 .] .2 .oe .01 .07 .oe . 08 .04 .03 . 02 .01 •• .• . 7 .. . . 1 J • 5 a 7 a 1 10 MULTIPLES OF P I C K U P SETI I N G Figure A.3 Timing Type b 3 : Definite Time...

Appendix A T ime Overc u r rent Characteristic C urves Page 3o (/) 0 z 0 0 llJ (/) z ·. llJ 100 ID ID 10 ID 50 .0 10 I I 7 � .I i= .I . 7 .I -� .. .3 1 .oi 7 .Ill · .o . Ill .00 .0 .OJ .01 . 01 .I .I .7 .I .I I J • � • 1 • 1 1 0 20 M U LTIPLES OF PICKUP SETI I NG Figure A.5 Timing Type b5: I nverse ...

Appendix A T ime Overc urrent Characteristic C urves Page 32 Cf) 0 z 0 0 w Cf) z w � F 1 00 10 10 40 50 20 10 • I 7 I T I M E 0 I A L 1 99 . I .7 .� .4 .J , , .CII 80 60 50 40 30 20 1 0 �j .jll .07 02 01 .CII .00 .04 .03 .01 .01 .. .. . 7 .1 .1 1 J 4 � • 7 • 1 1 0 M U LTIPLES O F P I C K U P SETI I ...

Appendix A T ime Overcu rrent C haracteristic Cu rves Page 33 � z 0 (_) LU U) � LU 1 00 10 10 70 10 so 40 1 0 I • 1 • • � .I i= .• . 1 .. . . .. .J . 2 .01 .01 .07 .01 .01 .04 .QJ .02 .01 .• .• . 1 .1.1 1 l 4 5 I 7 I 110 MULTIPLES OF PICKUP SETI I N G Figure A.1 1 Timing Type c3: FT w/Umit 3 (Dwg. N...

Appendix A T ime Overc u rrent Characteristic C urves Page 34 � z 0 u UJ (/) z UJ � t= - - 1011 • • 'Ill • • 40 10 I I 7 I .I .I . 7 .. - � .ai 7 .01 .0 .01 .01 . 04 . 113 . 02 . 01 . 1 .I . 7 . 1 . 1 1 l 4 � I 7 I 1 1 0 M U LTI PLES O F P I C K U P SETI I N G Figure A. 1 3 Timing Type c 5 : 12T w/L...

Appendix A T ime Overc urrent C haracteristic C u rves Page 35 (f) 0 z 0 (_) UJ (f) � UJ � F - - 1 00 10 10 7V 10 so 40 30 20 1 0 I I 7 I I l 1 .I .. .? .. -� .4 .3 .2 .1 .CII . 07 .CII .01 .04 .Ol .02 .01 .I . • . 7 . 1 . 1 1 l 4 � I 7 I 1 1 0 20 M U LTI PLES OF PICKUP SETI I N G Figure A.15 Timing...

Appendix A T ime Overcu rrent Characteristic C u rves Page 36 � z 8 w (/) 3 � 50 � 40 s w 0 w :::;; >= 30 SCOR INSTANTANEOUS TIME CURVE PHASE TIMINGS SCOR D992-oo7 1 -22-92 2 4 6 8 10 1 2 14 1 6 MULTIPLE OF TAP 18 20 Figure A. 1 7 SCOR Instantaneous Time Curve Phase Timings 70 60 :1:: 50 s w 0 w ...

Appendix B Functional Description of Operation Page 38 of squares algorithm for both determining trip level and for calculating metered values of the relay cu rrent level . The input waveform is sampled several times to determine instantaneous values. These instantaneous values are processed to obta...

Appendix 8 Functional Description of Operation Page 39 Registers ;one reg ister for the phases , one for grou n d . All current sensing and pickup data is weighted by the computer accord­ ingly. 8.5.5 Watchdog Circuitry The watchdog circuit checks that the microcomputer is opera­ tional. If some tra...

Appendix B F unctional D escription of Operation Page 40 8.8.1 Local RS-232 Port A 9-pin RS-232 communication port is provided on the front of the relay for local data readout and programming when the communication option is installed. Use of this port is restricted to Siemens field service and fact...

Appendix C Specifications Page 4 1 The SCOR relay is available in single-phase, three-phase, two­ p h ase-with-ground, and three-phase-with-ground configura­tions, and with the features and c a p a b ilities descri b e d in Table C.1 . Current Sensing Inputs Current Sensing Burden Frequency (nominal...

Appendix C Specifications Page 42 Overcurrent Timing Characteristics Characteristic: Time Dial : Time Delay Accuracy Instrumentation Feature Communications Option Power Supply Target Indicators Single-Phase Units: Multi- Phase Units Table C.1 Specifications (continued) The relay incorporates all of ...

S I E M E N S Siemens E n ergy & A u tomation , I n c . E l ectrical Ap parat u s Division P . O . Box 29503 Raleig h , NC 27626 (91 9) 365-6660 SG-9228-01 8/92 2M PR I N T E D I N U.S.A. www . ElectricalPartManuals . com