SIFANG CSC-161 Product Manual Download Page 9 | Manualshive

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SIFANG CSC-161 Product Manual Download Page 9

Function

7

21

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PDIS

21N

FL

RFLO

Z<

PDIS

59

3U>

PTOV

27

3U<

PTUV

25

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RREC

MONITORING

STATION

COMMUNICATION

MEASUREMENT

50

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PIOC

50N

I

0

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PIEF

PTOC

51/67

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PTEF

50SOTF

PSOF

50BF

RBRF

3I>BF

50STUB 3I>STUB

PTOC

94

PTRC

- RS232/485
- RJ45/FO
- IEC61850
- IEC60870-5-103

RSYN

50DZ

Fault recording

50PD

PD

RPLD

68

RPSB

Zpsb

85-21

85-67N

PSCH

PSCH

PLC Protection

interface 1

PLC Protection

interface 2

Remote

Communication

Ports

FO CONNECTION

FO CONNECTION

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Summary of Contents for CSC-161

Page 1: ...CSC 161 Line Protection IED Product Guide ...

Page 2: ...ght is registered Improper use in particular reproduction and dissemination to third parties is not permitted This document has been carefully checked If the user nevertheless detects any errors he is asked to notify us as soon as possible The data contained in this manual is intended solely for the IED description and is not to be deemed to be a statement of guaranteed properties In the interests...

Page 3: ...c Short lines Heavily loaded lines For three pole operated circuit breaker Communication with station automation system The IED provides a highly sensitive and reliable distance protection with innovative and proven quadrilateral characteristic In addition to separated zone extension functionality five distance zones have fully independent measuring and setting values which gives high flexibility ...

Page 4: ...of directional elements cooperate each other so as to determine the fault direction correctly and promptly Memory voltage directional element Zero sequence component directional element Negative sequence component directional element Impedance directional element Full scheme phase to phase and phase to earth distance protection with five quadrilateral protection zones and additional extension zone...

Page 5: ...ports and general operation reports Any kinds of reports can be stored up to 2000 and be memorized in case of power disconnection Remote communication Tele protection contacts for power line carrier protection interface Up to two fiber optical remote communication ports for protection function like tele protection used up to 100kM single mode optical fiber cable External optical electrical convert...

Page 6: ...tion Overcurrent protection 50 51 67 PTOC 3IINV 3I 3I Earth fault protection 50N 51N 67N PEFM I0INV I0 I0 Emergency backup overcurrent protection 50 51 PTOC 3IINV 3I Emergency backup earth fault protection 50N 51N PTEF I0INV I0 Switch onto fault protection 50SOTF PSOF 3I SOTF I0 SOTF Overload protection 50OL PTOC 3I OL Voltage protection Overvoltage protection 59 PTOV 3U 3U Undervoltage protection...

Page 7: ...circuit supervision VT secondary circuit supervision 97FF Monitoring functions Description Redundant A D sampling data self check Phase sequence of voltage and current supervision 3I0 polarity supervision The third harmonic of voltage supervision Synchro check reference voltage supervision Auxiliary contacts of circuit breaker supervision Broken conductor check Self supervision Logicality of setti...

Page 8: ...rotocol Time synchronization port support GPS pulse or IRIG B code Remote communication Description Communication port Contact s interface for power line carrier for tele protection 0 2 fiber optical communication port s for tele protection Connection mode Direction fiber cable connection Digital communication network through converter IED software tools Functions Reading measuring value IED repor...

Page 9: ...OC 50N I0 PIEF PTOC 51 67 3I 3I 51N 67N I0 I0 PTEF 50SOTF PSOF 50BF RBRF 3I BF 50STUB 3I STUB PTOC 94 PTRC RS232 485 RJ45 FO IEC61850 IEC60870 5 103 RSYN 50DZ Fault recording 50PD PD RPLD 68 RPSB Zpsb 85 21 85 67N PSCH PSCH PLC Protection interface 1 PLC Protection interface 2 Remote Communication Ports FO CONNECTION FO CONNECTION ...

Page 10: ...tity of one power cycle Δ3i0 Sudden change zero sequence current I_Abrupt The setting value of current sudden change elements Zero sequence current startup element Zero sequence current startup element is applied to improve the fault detection sensitivity at the high resistance earth faults As an auxiliary startup element it operates with a short time delay Overcurrent startup element If overcurre...

Page 11: ...nts as one of their operating condition All the following directional elements cooperate with the mentioned protection functions Memory voltage directional element The IED uses the memory voltage and fault current to determine the direction of the fault Therefore transient voltage of short circuit conditions doesn t influence the direction detection Additionally it improves the direction detection...

Page 12: ...e Impedance directional elements The characteristic of the impedance directional element shown in Figure 3 is same with that of distance protection X R R_Set Forward Reverse X_Set n X_Set n R_Set Figure 3 Direction detection characteristic of impedance directional element where RSET The resistance setting of relevant zone of distance protection XSET The reactance setting of relevant zone of distan...

Page 13: ...istance reach setting for phase to earth fault Subscript X means the number of protection zone Subscript PE means phase to earth fault X_ZnPP Reactance reach setting for phase to phase fault X_ZnPE Reactance reach setting for phase to earth fault Φ_ZTop The upper boundary angle of the characteristic in the first quadrant is designed to avoid distance protection overreaching when a close in fault h...

Page 14: ...up protection The reverse zone characteristic can be set for zones 4 and 5 individually This reverse characteristic has been shown in Figure 7 X R X_ZSet R_ZSet Figure 7 Characteristic distance protection reverse zone Switch onto fault protection function Under either auto reclosing or manual closing process the protection function is able to discriminate these conditions to give an instantaneous ...

Page 15: ...internal fault and power swing conditions Asymmetric faults detection element The zero and negative sequence current are always the key features of the asymmetric fault By comparison amongst the positive negative and zero sequence component of phase current the element distinguishes the asymmetric fault from power swing Three phase fault detection element Based on the experimental results and prac...

Page 16: ...irectional element characteristic angle to satisfy the different network conditions and applications Each stage can be set individually as directional non directional Each stage can be set individually for inrush restraint Cross blocking function for inrush detection Settable maximum inrush current VT secondary circuit supervision for directional protection Once VT failure happens the directional ...

Page 17: ...of applied current and reference voltage for directional element Phase Current Voltage A a I bc U B b I ca U C c I ab U For three phase short circuit fault without any healthy phase memory voltage values are used to determine direction clearly if the measured voltage values are not sufficient The detected direction is based on the memory voltage of previous power cycles Earth fault protection 50N ...

Page 18: ...equence directional element where Ф0_Char The settable characteristic angle For earth fault protection users can choose negative sequence directional element as the complement of zero sequence directional element It can be used in case of too low zero sequence voltage due to some fault condition e g the unfavorable zero sequence voltage The negative sequence directional element characteristic is s...

Page 19: ...cteristic Inrush restraint function can be set for each stage separately Cross blocking of inrush detection Settable maximum inrush current Emergency backup earth fault protection 50N 51N In the case of VT fail condition all distance zones and protection functions related with voltage input are out of operation An emergency earth fault protection comes into operation Additionally the protection ca...

Page 20: ...earth voltage and phase phase selectable Settable dropout ratio Undervoltage protection 27 One voltage reduction can occur in the power system during faults or abnormal conditions The protection provides following features Two definite time stages Each stage can be set to alarm or trip Measuring voltage between phase earth voltage and phase phase selectable Current criteria supervision Circuit bre...

Page 21: ...Internal external initiation Single three phase CBF initiation Selectable CB Aux contacts checking Current criteria checking including phase current zero and negative sequence current Dead zone protection 50DZ The IED provides this protection function to protect dead zone namely the area between circuit breaker and CT in the case that CB is open Therefore by occurrence of a fault in dead zone the ...

Page 22: ...to IED binary input The function supports one definite stage which related concept is shown in Figure 13 Bus A IFAULT Delay trip Line A Line B IFAULT Bus B Closed CB Figure 13 Tripping logic of STUB protection Poles discordance protection 50PD The phase segregated operating circuit breakers can be in different positions close open due to electrical or mechanical failures during the system normal o...

Page 23: ... be met an alarm will be issued after default time delay Auto reclosing 79 For restoration of the normal service after a fault an auto reclosing attempt is mostly made for overhead lines Experiences show that about 85 of faults have transient nature and will disappear after an auto reclosing attempt is performed This means that the line can be re energized in a short period The reconnection is acc...

Page 24: ...circuit of voltage transformer may result in unwanted operation of the protection functions which work based on voltage criteria VT failure supervision function is provided to block these protection functions and enable the backup protection functions The features of the function are as follows Symmetrical asymmetrical VT failure detection 3 phase AC voltage MCB monitoring 1 phase AC voltage MCB m...

Page 25: ...is reported Broken conductor detection The main purpose of the broken conductor detection function is to detect the broken conductors on protected transmission lines and cables Detection can initiate an alarm or tripping Self supervision All modules can perform self supervision to its key hardware components and program as soon as energizing Parts of the modules are self supervised in real time Al...

Page 26: ...tion ports are provided to connect with substation automation system These two out of three ports can work in parallel for protocol IEC61850 or IEC60870 5 103 Gateway or converter Work Station 3 Server or Work Station 1 Server or Work Station 2 Work Station 4 Net 2 IEC61850 IEC103 Ethernet Port B Net 3 IEC103 RS485 Port A Net 4 IEC103 RS485 Port B Net 1 IEC61850 IEC103 Ethernet Port A Gateway or c...

Page 27: ... of the transmission line or cable respectively This functionality is mainly used for the line Tele protection schemes e g POTT or PUTT schemes blocking scheme and inter trip and so on Remote communication channel The IEDs are able to communicate with each other in two types Directly fiber optical cable connection mode at distances up to 100 km see Figure 16 and Figure 17 Through the communication...

Page 28: ... network is made by dedicated communication converters CSC186 They have a fiber optic interface with 1310 nm and 2 FC connectors to the protection IED The converter can be set to support an electrical G703 64 kbit s or G703 E1 2Mbit s interface according the require ment of the multiplexed communication network o e Communication converter Communication converter Digital communication network G703 ...

Page 29: ...on network Channel B Channel A Figure 19 Double channels communication through digital communication network Single mode FO Length 60kM or 60 100kM IED IED Channel A Channel B o e Digital communication network e o G703 5 E1 2048kbit s G703 1 64kbit s Overhead Line or Cable Figure 20 Double channels one channel through digital communication network one channel through dedicated fiber optical cables...

Page 30: ...import and export of parameter sets sorted by protection functions with setting logicality check Precise fault analysis with visualization of fault records in curves circle diagrams vector diagrams bar charts and data sheet Intelligent plausibility checks rule out incorrect input Graphical visualization of charac teristics and zone diagrams with direct manipulation of the curves Password protected...

Page 31: ...7 CSC 161 Figure 21 Front plate 1 Liquid crystal display LCD 2 LEDs 3 Shortcut function keys 4 Arrow keys 5 Reset key 6 Quit key 7 Set key 8 RS232 communication port Rear plate Test port X 3 COM X2 X4 X5 X6 X7 X8 X1 AIM X10 PSM Ethernet ports Fiber Optical ports X 9 For BIM and BOM CPU1 Figure 22 Rear plate of the protection IED ...

Page 32: ...et ports and up to 2 channels RS485 serial communication ports can be provided in communication module to meet the communication demands of different substation automation system and RTU at the same time The time synchronization port is equipped which can work in pulse mode or IRIG B mode SNTP mode can be applied through communication port In addition a series printer port is also reserved Binary ...

Page 33: ...case with rear cover Table 2 Dimension of the IED case Legend A B C D E Dimension mm 177 482 6 265 320 437 2 A B C D E Figure 24 Cut out on the panel Table 3 Dimension of the cutout for IED mounting Legend A B C D E Dimension mm 450 465 161 6 178 6 5 ...

Page 34: ...Null Null Null X5 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 2 Ethernet Port 1 ST Ethernet Port 2 ST Note 1 The two optical fiber ports are optional for protection remote communication 2 Alternative Ethernet ports for station communication are 2 ST optical fiber ports shown as following a06 b06 a07 b07 a08 b08 Nul...

Page 35: ...16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 Output relay 01 Output relay 02 Output relay 03 Output relay 04 Output relay 05 Output relay 06 Output relay 07 X7 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 Output relay 01 Output relay 02 Output relay 03 Output relay 04 Output relay 05 Output...

Page 36: ... a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 DC 24V output Null DC 24V output Power failure alarm relay 1 AUX DC input Power failure alarm relay 2 AUX DC input Null Null Null Terminal for earthing Terminal for earthing Null Null Null Null ...

Page 37: ...ection 35 B Typical analogue inputs connection for one breaker of single or double busbar arrangement IA IB IC UB UA UC U4 IN UN Protection IED A B C a01 a02 a03 a04 b01 b02 b03 b04 a12 a11 b11 b12 a10 b10 ...

Page 38: ...Connection 36 C Typical analogue inputs connection for one and half breaker arrangement IA IB IC UB UA UC U4 IN UN Protection IED a01 a02 a03 a04 b01 b02 b03 b04 a12 a11 b11 b12 a10 b10 A B C A B C ...

Page 39: ...Connection 37 D Typical analogue inputs connection for parallel lines IA IB IC UB UA UC U4 IN UN Protection IED A B C a01 a02 a03 a04 b01 b02 b03 b04 a12 a11 b11 b12 a10 b10 INM a05 b05 ...

Page 40: ... for 1 s 4 Ir continuous Internal voltage transformer Item Standard Data Rated voltage Vr ph ph IEC 60255 1 100 V 110 V Nominal range ph e 0 4 V to 120 V Power consumption at Vr 110 V IEC 60255 27 DL T 478 2001 0 1 VA per phase Thermal overload capability phase neutral voltage IEC 60255 27 DL T 478 2001 2 Vr for 10s 1 5 Vr continuous Auxiliary voltage Item Standard Data Rated auxiliary voltage Uau...

Page 41: ...zed IEC60255 1 Max 0 5 W input 110V DC Max 1 W input 220V DC Binary outputs Item Standard Data Max system voltage IEC60255 1 250V DC AC Current carrying capacity IEC60255 1 5 A continuous 30A 200ms ON 15s OFF Making capacity IEC60255 1 1100 W DC at inductive load with L R 40 ms 1000 VA AC Breaking capacity IEC60255 1 220VDC 0 15A at L R 40 ms 110VDC 0 30A at L R 40 ms Mechanical endurance Unloaded...

Page 42: ...ols Communication speed 9600 baud Max length of communication cable 15 m RS485 communication port Item Data Number 0 to 2 Connection 2 wire connector Rear port in communication module Max length of communication cable 1 0 km Test voltage 500 V AC against earth For IEC 60870 5 103 protocol Communication speed Factory setting 9600 baud Min 1200 baud Max 19200 baud Ethernet communication port Item Da...

Page 43: ...nnection 2 wire connector Rear port in communication module Voltage levels differential input Fiber optic communication ports for remote communication Item Data Number 1 to 2 Fiber optic cable type Single mode Optic wavelength 1310nm when the transmission distance 60km 1550nm when the transmission distance 60km Optic received sensitivity 38dBm Emitter electric level 8dBm the transmission distance ...

Page 44: ...mmended permanent operating temperature 10 C to 55 C Legibility of display may be impaired above 55 C 131 F Storage and transport temperature limit 25 C to 70 C Permissible humidity 95 of relative humidity IED design Item Data Case size 4U 19inch Weight 10kg ...

Page 45: ... DC between the following circuits auxiliary power supply CT VT inputs binary inputs binary outputs case earth 500V 50Hz between the following circuits Communication ports to case earth time synchronization terminals to case earth Impulse voltage test IEC60255 5 IEC 60255 27 EN 60255 5 ANSI C37 90 GB T 15145 2001 DL T 478 2001 5kV 1 2 50μs 0 5J If Ui 63V 1kV if Ui 63V Tested between the following ...

Page 46: ...60255 22 2 IEC 61000 4 2 EN 60255 22 2 Level 4 8 kV contact discharge 15 kV air gap discharge both polarities 150 pF Ri 330 Ω Radiated electromagnetic field disturbance test IEC 60255 22 3 EN 60255 22 3 Frequency sweep 80 MHz 1 GHz 1 4 GHz 2 7 GHz spot frequencies 80 MHz 160 MHz 380 MHz 450 MHz 900 MHz 1850 MHz 2150 MHz 10 V m AM 80 1 kHz Radiated electromagnetic field disturbance test IEC 60255 2...

Page 47: ...Frequency sweep 150 kHz 80 MHz spot frequencies 27 MHz and 68 MHz 10 V AM 80 1 kHz Power frequency immunity test IEC60255 22 7 Class A 300 V CM 150 V DM Power frequency magnetic field test IEC 61000 4 8 Level 4 30 A m cont 300 A m 1 s to 3 s 100 kHz burst immunity test IEC61000 4 18 2 5 kV CM 1 kV DM Tested on the following circuits auxiliary power supply CT VT inputs binary inputs binary outputs ...

Page 48: ...to 5 GHz Conducted emission IEC60255 25 EN60255 25 CISPR22 0 15MHz to 30MHz Mechanical tests Item Standard Data Sinusoidal Vibration response test IEC60255 21 1 EN 60255 21 1 Class 1 10 Hz to 60 Hz 0 075 mm 60 Hz to 150 Hz 1 g 1 sweep cycle in each axis Relay energized Sinusoidal Vibration endurance test IEC60255 21 1 EN 60255 21 1 Class 1 10 Hz to 150 Hz 1 g 20 sweep cycle in each axis Relay non ...

Page 49: ...C 16 hours rated load Cold test Storage IEC60255 27 IEC60068 2 1 25 C 16 hours Dry heat test Operation IEC60255 27 IEC60068 2 2 55 C 16 hours rated load Dry heat test Storage IEC60255 27 IEC60068 2 2 70 C 16 hours Change of temperature IEC60255 27 IEC60068 2 14 Test Nb figure 2 5 cycles 10 C 55 C Damp heat static test IEC60255 27 IEC60068 2 78 40 C 93 r h 10 days rated load Damp heat cyclic test I...

Page 50: ... 01Ω 120Ω step 0 01Ω when Ir 5A 0 05Ω 600Ω step 0 01Ω when Ir 1A Time delay of distance zones 0 00 to 60 00s step 0 01s 1 or 20 ms at 70 operating setting and setting time 60ms Operation time 22ms typically at 70 setting of zone 1 Dynamic overreaching for zone 1 5 at 0 5 SIR 30 Tele protection ANSI 85 21 21N 67N Item Rang or Value Tolerance Operating time 25ms typically in permission mode for 21 2...

Page 51: ... 001s Delay of inverse time B 0 000 to 60 00s step 0 01s Index of inverse time P 0 005 to 10 00 step 0 005 set time Multiplier for step n k 0 05 to 999 0 step 0 01 Minimum operating time 20ms Maximum operating time 100s Reset mode instantaneous Directional element Operating area range 3 at phase to phase voltage 1V Characteristic angle 0 to 90 step 1 Earth fault protection ANSI 50N 51N 67N Item Ra...

Page 52: ...ng time 100s Reset mode instantaneous Directional element Operating area range of zero sequence directional element 3 at 3U0 1V Characteristic angle 0 to 90 step 1 Operating area range of negative sequence directional element 3 at 3U2 2V Characteristic angle 50 to 90 step 1 Emergency backup overcurrent protection ANSI 50 51 Item Rang or Value Tolerance Definite time characteristics Current 0 08 Ir...

Page 53: ...ng time 100s Reset mode instantaneous Emergency backup earth fault protection ANSI 50N 51N Item Rang or value Tolerance Definite time characteristic Current 0 08 Ir to 20 00 Ir 3 setting or 0 02Ir Time delay 0 00 to 60 00s step 0 01s 1 setting or 40ms at 200 operating setting Inverse time characteristics Current 0 08 Ir to 20 00 Ir 3 setting or 0 02Ir IEC standard Normal inverse Very inverse Extre...

Page 54: ...ck IL1 IL2 IL3 settable time 0 00s to 60 00 s step 0 01s 1 setting or 40ms Switch onto fault protection ANSI 50SOTF Item Rang or Value Tolerance Phase current 0 08 Ir to 20 00 Ir 3 setting or 0 02Ir Zero sequence current 0 08 Ir to 20 00 Ir 3 setting or 0 02Ir Time delay of phase overcurrent 0 00s to 60 00s step 0 01s 1 setting or 40ms at 200 operating setting Time delay of zero sequence current 0...

Page 55: ...ection ANSI 50STUB Item Rang or Value Tolerance Current 0 08 Ir to 20 00 Ir 3 setting or 0 02Ir Time delay 0 00s to 60 00s step 0 01s 1 setting or 40 ms at 200 operating setting Undervoltage protection ANSI 27 Item Rang or Value Tolerance Voltage connection Phase to phase voltages or phase to earth voltages 3 setting or 1 V Phase to earth voltage 5 to 75 V step 1 V 3 setting or 1 V Phase to phase ...

Page 56: ...de Synchronization check Synch check Energizing check and synch check if energizing check failure Override Energizing check Dead V4 and dead V3Ph Dead V4 and live V3Ph Live V4 and dead V3Ph Voltage threshold of dead line or bus 10 to 50 V phase to earth step 1 V 3 setting or 1 V Voltage threshold of live line or bus 30 to 65 V phase to earth step 1 V 3 setting or 1 V V measurement Voltage differen...

Page 57: ...60 00s step 0 01 s Circuit breaker ready supervision time 0 50 s to 60 00 s step 0 01 s Dead time extension for synch check Max SYNT EXT 0 05 s to 60 00 s step 0 01 s VT secondary circuit supervision 97FF Item Range or value Tolerances Minimum current 0 08Ir to 0 20Ir step 0 01A 3 setting or 0 02Ir Minimum zero or negative sequence current 0 08Ir to 0 20Ir step 0 01A 5 setting or 0 02Ir Maximum ph...

Page 58: ...tion 50N 51N 67N 1 1 1 Emergency backup overcurrent protection 50 51 1 1 1 Emergency backup earth fault protection 50N 51N 1 1 1 Switch onto fault protection 50HS 1 1 1 Overload protection 50OL 1 1 1 Overvoltage protection 59 1 1 1 Under voltage protection 27 1 1 1 Breaker failure protection 50BF 1 Dead zone protection 50SH Z 1 STUB protection 50STUB 1 1 Synchro check and energizing check 25 1 1 A...

Page 59: ... module 30 BI 1 1 1 Binary output modules 16 relays for tripping and initiation 2 2 2 Binary output modules 16 relays for signal 2 2 2 Power supply module 1 1 1 Programmable LEDs 18 18 18 Case 4U 19 1 1 1 NOTE n Quantity of standard function or standard hardware n 1 2 n Quantity of optional function or optional hardware n 1 2 ...

Page 60: ...tion Communication Protocols T HMI Language L note English French Russian Spanish Portuguese Rated Frequency F 1 2 3 4 5 50 Hz 5 6 60 Hz Ethernet interface IEC60870 5 103 RS485 interface IEC60870 5 103 F L T 1 2 Pre configure scheme code Pre configure scheme number 1 Pre configure scheme number 2 Note Chinese is always offered as default HMI language ...

Page 61: ...transmission distance 40 kM 1 FDDI 2Mbps single mode SC type transmission distance 40 60kM 1 FDDI 2Mbps single mode SC type transmission distance 60 100kM 2 FDDIs 2Mbps SC type Channel A transmission distance 40 60 kM Channel B transmission distance 40 kM 2 FDDIs 2Mbps SC type Channel A transmission distance 60 100 kM Channel B transmission distance 40 kM 2 FDDIs 2Mbps SC type Channel A transmissi...

Page 62: ...ontacts for signalling Slot 4 Slot 5 Slot 6 Binary Output Module O 16 relays for tripping 1 Null 16 relays with 19 contacts for signalling Slot 7 Binary Output Module O 16 relays for tripping Null 16 relays with 19 contacts for signalling Slot 8 Binary Output Module O 16 relays for tripping I O 1 3 x 1 3 x 1 Null 16 relays with 19 contacts for signalling Slot 9 Binary Output Module O 16 relays for...

Page 63: ...Ordering 61 No 31 36 No 1 30 C S 1 6 C 1 Case and Front Plate K Case 4U 19 Front plate Medium size LCD 20 LEDs 3 110V 250V DC Power Supply Module P 1 Slot 10 P K Accessories Z Null x Z ...

Page 64: ...Address No 9 Shangdi 4th Street Haidian District Beijing P R C 100085 Tel 86 10 62962554 86 10 62961515 ext 8998 Fax 86 10 82783625 Email sf_sales sf auto com Website http www sf auto com ...

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