Protection relay settings management in the modern world. Protection relay settings management in the modern world brad henderson page 3 of 7 seapac2009 s08 protection relay settings management. Dec 30, 2017 cdg 31 relay technical manual ppt free access for cdg 31 relay technical manual ppt from our huge library or simply read online from your computer instantly. There is a significant amount of autonomyempowerment allowed whilst high levels of support support around you. Relay setting calculationidmt relayprotectionelectrical. It has a limitation that it can be applied only to simple and non costly equipments. This is the simplest of the ways to protect a line and therefore widely used.
Overcurrent relays can be used to protect practically any power system. The old cdg relays are still manufactured in india. Therefore the relay fault current as a multiple of the plug setting 101. Practical setting considerations for protective relays. Gec protection relays cdg 11 14 gec protection relays cdg 11 14 rodmcm electrical. Sep 05, 2016 relay also pays for people to complete their degrees in software engineering. It also occurs, because of the insulation breakdown. Sel introduced the worlds first digital relay in 1984, revolutionizing the power protection industry by offering fault locating and other features for a fraction of the cost of earlier systems. There setting methods are same but the only difference is that pick up of 51 is higher than that of 51n. I am still working with it hats off to the oldtimers who, without any computers and softwareprograms, developed something that is still in use today. Addendum addendum this addendum contains information that relates to the b30 bus differential relay relay, version 3.
Protection relay settings management in the modern world brad henderson page 2 of 7 seapac2009 s08 protection relay settings management. As per facory setting the relay will have starting charecteristic % of set value, how ever it can be made to pickup at 110%, by adjusting the spiral type controle spring. Dec 20, 2018 50n setting method is also same, but use minimum pick up setting, generally 510% of ngr rating can be used. Current setting is the setting of currentpickup current in a relay at which we want to operate that relay. This cdg 11 type relay is applied for selective phase and earth fault protection in time graded systems for ac machines.
Designed with attention to every detail, idec relays and timers go the extra mile in performance and dependability. This setting records every relevant operational activity of the cpc 100. Electrical relays alstom idmt relay wholesaler from pune. Im not sure if the cdg and cdg 14 data are in electronic format, although i think it will be. Different relays are used for industrial power system protection are cdg11, cdg12. This addendum lists a number of information items that appear in the instruction manual gek106436c revision f4 but are not included in the current b30 operations. For everyone with any interest in electrical engineering. This addendum contains information that relates to the b30 bus differential relay relay, version 3.
More templates could be downloaded from lz96 reg1 0 rel511 rel531 msoc razfe reb670 rec670 ref542 reg216 rel300 rel316 rel350 rel352 rel356 rel511 rel512 rel521 rel531 rel561 rel650 rel670 ret521 ret670 rez1 spac150c spac310c tpu2000r. Following the codes for relay type used in this program. Correlating sockets include multiple features for easeofuse and can be din rail, panel or pcb mounted. Type of relay cdg 11, 21, 31 or 61 and system frequency. The fullload current stated for the tnb relay is the preliminary md applied. It is software for controlling only the relays of denkovi modules. This work has not looked at the pickup times for the relays.
Hence, this relay has current setting range as well as time setting range. Protection and relays used in main circuit board at a. Idec produces a wide selection of interface, power, solid state and pcb mount relays to fit your application requirements. Each socket is designed to work with idec timers and relays, but will work equally well with any fitting component. Relay also pays for people to complete their degrees in software engineering. Drs numerical singlephase and threephase reclosing system. Typically used with 5a cts, the 5a setting is 1x and the 10a setting is 2x. Calculation for cdg 61 relay cr4 discussion thread. Thanks to technological advances and creative engineering. Stpu setting timecurrent curves circuit breakers cargill electrical team meeting 24. Type cdg 21 relay is a single pole type cdg 11 relay with a highset instantaneous unit. The current setting is given by the plug bridge, and the time multiplier by the graduated dial at the top. The timedomain relay uses the td32 element in the pott scheme, but the relay may also use it to supervise the td21 protection element and, in some applications, the tw87 protection scheme. Keywords relay coordination, etap, phase fault, earth fault, relays.
In all electrical relays, the moving contacts are not free to move. Gec protection relays cdg 11 14 bung electrical 23 nov 04 21. Designed with attention to every detail, idec relays are manufactured to ensure precision and quality. Engineers use these two terms but also refer to this function.
Abb library is a web tool for searching for documents related to abb products and services. The elements are vertically mounted on a mild steel backplate with the directional element in the upper position. Relays for breakers on the primaries of transformers. The gec cdg relay was brought out at a time well before. Iet forums english electric cdg type protection relays. Therefore the actual time of operation of the relay for psm 10, is 3. Protection and relays used in main circuit board at a power. Feeder load current 384 amp, feeder fault current min11ka and max 22ka. Cdg 31 relay technical manual by mankyrecords684 issuu.
Setting file and logic creation, editing and transfer to and from the. The settings, however, are both positive numbers and the relay inverts the sign of the td32zr setting. In this video we have explained calculation for idmt over current relay setting calculation. In the years since, we have grown and developed a complete line of products and services for the protection, monitoring, control, automation, and metering of electric power systems. Ability to transfer relaysettings data in both directions between the relay database and an sel5030 acselerator file. Calculate idmt over current relay setting 5051 electrical notes. For earth fault relay it is from 10% to 70% in steps of 10%. Operation, maintenance, and field test procedures for. Relay setting of idmt and instantaneous over current and. Types and applications of overcurrent relay part 1.
Sep 17, 2016 current setting is the setting of currentpickup current in a relay at which we want to operate that relay. Type cdg 14 extremely inverse time overcurrent and earth. This fact must be considered when selecting and setting the relay. Please check our article ct connection to sense earth faultearth faults detection philosophy to know earth fault is detected. Current setting range of highset unit, if required. Relay products are the market standard in ireland, and the company serves more than 400 customers with over 3,000 insurance professional users in the irish market. If ngr is not there then the same % of flc can be used, but try to use minimum pick up setting for the relay to ensure maximum percentage of protection. The current setting of overcurrent relay is generally ranged from 50 % to 200 %, in steps of 25 %. The fullload current stated for rt01 or rt03 is the actual md required without any spare.
Fist 38, operation, maintenance, and field test procedures for protective relays and associated circuits 5a. Relay offers an integrated suite of products including backoffice software and etrading platform for motor, home, commercial vehicle, lifeinvestment, and commercial lines panels. The cdg31 is just a threeelement version of the same relay, hopefully its similar enough that you can fdg31 it out. Ability to transfer relaysettings data in both directions between the relay database and an sel5010 file. For example, one electromechanical relay is adjustable from 2 to 48a pickup. More templates could be downloaded from lz96 reg1 0 rel511 rel531 msoc razfe reb670 rec670 ref542 reg216 rel300 rel316 rel350 rel352 rel356 rel511 rel512 rel521 rel531 rel561 rel650 rel670 ret521 ret670 rez1 spac150c spac310c tpu2000r cag17 cag37 cdd cdg 11 ctig. Type cdg 31 is a triple pole version of the type cdg 11 with three overcurrent units or two overcurrent units and one earthfault unit in the centre. Pickup is typically chosen at approximately 140% of nominal transformer. Ability to import relaysettings data from setting files and software of ge, areva, abb and other relay vendors. For example, for a common relay function such as instantaneous overcurrent the iec and ansi abbreviations are i and 50 respectively.
Type cdg 11 overcurrent and earthfault relay system controls. It owes its application from the fact that in the event of fault the current would increase to a value several times greater than maximum load current. Alstom grid 2002 1st pacis digital control sys commissioned in uk 2007 certification labs. Contact alstom for the data ive got some data for the cdg 11 electronic format from them. Earth fault is the unintended fault between the live conductor and the earth. The earthfault current can be measured either via a set of three phase current transformers in a residual current connection or a. I remember having some literature a long time ago of which screw to adjust to alter which setting moving magnets across the disc etcbut i cant find it any longer. Aug 31, 2018 finally that operating time of relay would be multiplied with time setting multiplier, in order to get actual time of operation of relay.
The curve types are given by the relay part number. Denkovi relay manager drm is windowslinux software for easy controlling all kinds of denkovi relay boards usb,snmp,tcpip. Authors paul price, nate myers, jim dehaan bureau of reclamation hydropower technical services group denver, colorado 5d. When the relay contacts close, they can bounce, opening slightly and creating an arc that will burn and erode the contact surfaces. Finally that operating time of relay would be multiplied with time setting multiplier, in order to get actual time of operation of relay. Selection of the required current setting is by means of a plug setting bridge which has a single insulated plug.
Setting the um30sv relay threephase voltage, frequency, vhz, and vector jump functions. Over the years idec has introduced many new innovations to its family of relays. Newsstand in le mesnilamelot, iledefrance foursquare uses cookies to provide you with an optimal experience, to personalize ads that you may see, and to help advertisers measure the results of their ad campaigns. Pick up current current setting plug setting multiplier and time. Current settings graded tap ranges 1040%, 2080% or 50200% of 0.
Cap 501 relay setting software classic cap 505 relay configuration software. A maintenance or testing program is used to determine the performance and availability of protection systems. The logfile can then be sent to omicron electronics for diagnosis. It is a cag 1212g standard attracted armature relay with adjustable settings. Vamp 11f overcurrent and earth fault protection relay is supported by the freeof charge setting software micom s1 studio version 5. Pick up current current setting plug setting multiplier. Over load current setting is 125%, plug setting of relay is 0. Page 72 this setting is suggested if the operator suspects, for example, an incorrect functioning or an operational malfunction of the cpc 100. As a result, the power factor correction reduces the start up current, but in the relay setting calculation, the relay should be set according to the ratio of the starting current and the corrected rated current. When electromechanical relays were more popular, the overcurrent protection was made up from separate singlephase units. A relay that operates or picks up when its current exceeds a predetermined value setting value is called overcurrent relay.
Calculation of phase fault overcurrent relay settings. This cdg 11type relay is applied for selective phase and earth fault protection in time graded systems for ac machines. Protective relay characteristics and settings fuse ratings lv circuit breaker ratings, characteristics, and. The setting is in pickup amperes, completely independent of the pickup setting of the inversetime element or, on some solidstate relays, in multiples of the inversetime pickup point. Low voltage breaker relay coordination requires a minimum 0. In electrical engineering, a protective relay is a relay device designed to trip a circuit breaker. Earthfault relay product guide spaj 110 c 1mrs750351mbg 4 design the earthfault relay spaj 110 c is a secondary relay that is connected to the current transformers of the object to be protected. Download manual of induction disc type cdg 61 relay alstom. Type cdg 61 relay is a triple pole version of type cdg 21 relay. The type cdg 34 relay is a triple pole version with three overcurrent units or two overcurrent units and one earth fault unit in the centre of the type cdg 14. Setting example iec 60255 an amp breaker protected by relay with standard inverse characteristic. Overcurrent protection protects electrical power systems against excessive currents which are caused by short circuits, ground faults, etc. Overcurrent relays are normally supplied with an instantaneous element and a timedelay element within the same unit. Calculate setting of idmt over current relay for following feeder and ct detail.