Easun Reyrolle Ltd. Bannerghatta Road, Bangalore, Karnataka

ERL in technical collaboration with Joslyn Clark, U.S.A offer a range of rugged Medium Voltage Vacuum Contactors for heavy industrial applications. Unlike conventional devices, these vacuum contactors enclose the power contacts within a vacuum chamber.   APPLICATIONS MV Motor Starter & Control Transformer & Capacitor Switching Pumping Induction Heating Soft Starters Transfer Switches Hazardous area equipment Crane Control Conveyors

ARGUS 8 range of numerical voltage and frequency relays have the power and flexibility of microprocessor technology, giving a wide range of settings which are supplemented by advanced features such as metering, data storage and Fibre-Optic communications. Supervisory and self-monitoring features give added confidence to the user as well as reduced maintenance and down time. A menu-based interface gives user friendly access to relay settings, meters and operational data Application Capacitor banks Ungrounded/ High impedance earthed systems AC generators Transmission lines Distribution feeders  

iCB series comprises embedded pole type vacuum circuit breakers for medium voltage and indoor use. They are suitable for three phase AC operations for 12kV, 17.5kV, 24kV and 36kV and are used for the protection of the electrical equipment in various industries, mining, and especially for medium voltage distribution sub stations, together with suitable air-insulated cubicles.The iCB used German Technology and is available in complete series for medium voltage and for all commonly used rated currents, from 630A to 4000A, and for rated breaking current up to 40kA. The iCB circuit breaker come with a mechanical lifetime of 30,000 operations. The embedding with epoxy resin covers the vacuum interrupter as well as the upper and lower contacts of the circuit breaker, thus creating a full insulation for the internal electrical circuits. The embedding is done with a fully automated process, the APG (automated pressure gelatin) process. Thus, the iCB is no longer subjected to environmental hazards, and is fully maintenance free in this aspect. A special flexible bedding fills the space between the vacuum interrupter and the epoxy resin, creating a cushion that responds to all thermal expansions and contractions, safeguarding the iCB from the occurrence of any electrical gap and therefore flash overs. The embedded pole technology protects the circuit breaker from shock and mechanical stress, pollution and condensation. Flash overs between the interrupters are now virtually a thing of the past. Also, the creep age length of the interrupter and therefore the voltage withstand level (BIL) of the circuit breaker increase dramatically, opening new dimensions in cubicle design. The use of modern, small-size vacuum interrupters with first class technology, the above features ensure the highest level of reliability for the iCB circuit breaker. While meeting all relevant standards, with a lifetime of over 30,000 mechanical operations, and the ability to function as a recloser, the iCB can surely meet the highest demands of the industry. Last not least, the high level of automation and technology used make the iCB also economically competitive and interesting for panel builders around the world.   Application Suitable for 3-phase AC operations for 12kV, 17.5kV, 24kV and 36kV Medium voltage distribution sub stations

The single-phase overvoltage relay basically comprises a tapped input transformer fitted with a plug-bridge, a potentiometer, a level-detector and a dry-reed repeat element. When the relay setting is exceeded, the level detector triggers and so energizes the repeat element. The single-phase undervoltage relay is similar to the above but is maintained operated and .drops off. when the monitored voltage falls below the relay setting.The three-phase relays comprise of three of the above elements.

XR relay has been developed for specific applications, and suitable for use with type AR relay range. It is an electro-mechanical relay with a consistent positive action, a long service life and complying with the appropriate requirements of IEC 60255. The XR351 has three attracted armature elements. It incorporates a time delay on de-energisation, to keep the relay in an operated condition, during temporary reduction in the battery voltage.   Features Low burden Preclose supervision

TESLA 4000 is an intelligent, state of the art, user-friendly multi-timeframe dynamic power system recorder with advanced Phasor Measurement Unit (PMU) and Continuous Disturbance Recording (CDR) capabilities.TESLA 4000 is an easy-to-use and cost effective, state of the art, multi-time frame (simultaneous) power system monitoring recorder. The integrated Phasor Measurement Unit (PMU) functionality streams synchrophasor data for wide area monitoring.The TESLA creates records simultaneously in three time domains - fault (fast), dynamic swing (slow) and trend records and also creates event logs.The CDR creates continuous records without triggers which together with the fault, swing and trend records provides wide area visibility of system performance. The CDR also creates redundancy in PMU data.With these powerful recording and communication capabilities, the TESLA recording systems provides the most versatile and complete monitoring of power system health. Application To provide early warning for unstable conditions in power system Improve system planning through real-time state estimation Major load centers, generation facilities and transmission interfaces Easy-to-use settings and analysis software PMU per IEEE C37.118-2005 standard Advanced communication protocols SCADA support with DNP3 and Modbus CDR meets NERC PRC-002 DME standards Remote input modules save on costly wiring runs Lossless data compression for fast file transfer Non-volatile on board flash memory  

MDDA Relay consists of a power supply unit, a timer unit and an attracted armature auxiliary relay. Resistor and Zener diode combination of the power supply unit provides low voltage stabilised DC supply to the static timer circuit. Non-linear resistors are used in the power supply unit for surge suppression. The timer unit consists of a timer circuit and a thumb wheel switch. The thumb wheel switch mounted on the name plate of the relay provides precise and high resolution time setting. The timer unit operates a reed relay which in turn energises an attracted armature auxiliary relay. This auxiliary relay is provided to achieve higher contact rating and flag indication, if required. MDDA can be provided either as a delay on pick up relay or as a delay on drop-off relay. A normally open contact is used for initiating time delay on pick up relay and output element gets energised after the set time delay. In the case of delay on drop off relay, the output element is normally energised and with the normally closed initiating contact opening out, the output elements gets de-energised after the set time delay.

ARGUS 7 is a combined check and system synchronising relay which can automatically select check or system synchronise from measurements of the relative phase angles between line and bus voltages. The relay will prevent closure of the circuit breaker if either the phase angle, slip frequency or the voltage magnitude of the incoming and running voltages fall outside prescribed limits.If the parameters are within the limits the relay will issue an output which can be used to close the circuit breaker directly or in conjunction with an autoreclose scheme. Both the check and system synchronise functions have independent settings and blocking features. The relay includes split system detection with a variable time delay, which can be used for blocking purposes within delayed autoreclose schemes.Synchronising bypass logic is provided to connect a dead line or bus to a live line or bus. For manual synchronising the relay includes a circuit breaker close guard feature which is used to prevent the control switch being held closed during a synchronising operation. This feature is implemented using internal logic and removes the need for an external relay. Application Check-synchronizing System-synchronizing

Substation Automation Solutions (SAS) for transmission utility sector which deals with bay oriented, distributed control solutions & RTU based solutions. This solution is provided along with Protection business and also as a separate model for existing substations. The SAS includes the integration of various Intelligent Electronic Devices (IEDs) like protective relays and multi-function meters besides data management facilities like process monitoring, supervisory control, alarming, reporting and data archiving and control of the substation implemented on the latest IEC61850 protocol standards.   Power System Automation   Data acquisition Data acquisition refers to acquiring, or collecting, data. This data is collected in the form of measured analog current or voltage values or the open or closed status of contact points. Acquired data can be used locally within the device collecting it, sent to another device in a substation, or sent from the substation to one or several databases for use by operators, engineers, planners, and administration.   SupervisionComputer processes and personnel supervise, or monitor, the conditions and status of the power system using this acquired data. Operators and engineers monitor the information remotely on computer displays and graphical wall displays or locally, at the device, on front-panel displays and laptop computers.ControlControl refers to sending command messages to a device to operate the I&C and power-system devices. Traditional supervisory control and data acquisition (SCADA) systems rely on operators to supervise the system and initiate commands from an operator console on the master computer. Field personnel can also control devices using front-panel push buttons or a laptop computer In addition, another task is power-system integration, which is the act of communicating data to, from, or among IEDs in the I&C system and remote users. Substation integration refers to combining data from the IED’s local to a substation so that there is a single point of contact in the substation for all of the I&C data. Power-system automation processes rely on data acquisition; power-system supervision and power-system control all working together in a coordinated automatic fashion. The commands are generated automatically and then transmitted in the same fashion as operator initiated commands.

We are offering sub harmonic protection relay. S-pro 4000 is a digital, microprocessor-based sub-harmonic protection system that provides comprehensive sub-harmonic protection for transmission lines at any voltage level, particularly those with serial compensation and interconnected with wind farms. Use the s-pro sub-harmonic protection relay for monitoring and protection of uncontrolled sub-harmonics, ensuring a reliable operation of the power grid.

We are offering serial converters. Automation business include the following in-house communication and control products. Serial converters er 05a : rs232 to rs 485rs422 converter er21a : rs232rs485 to fibre-optic converter er50 : fibre optic hub er 50-5 : serial converters er 50-15 : serial converters er 50-10 : serial converters

iGIS Ring Main Unit (RMU) demonstrates a highly innovative and modern design that complements the latest production technology from Germany. iGIS guarantees highest accuracies and realizes almost 100% gas tightness. Manufactured with the latest filling and testing techniques, iGIS undoubtedly has a superior performance in the market of SF6 gas insulated ring main units. iGIS is a state of the art medium voltage switchgear that not only guarantees high operational safety, but also has a reliable indication of switching positions. The panels are type tested as per IEC standard 62271-200 While utilizing the most modern design for Ring Main Units, the GLX24 also features the use of the most advanced manufacturing technology world wide. With laser cutting and punching machines from TRUMF (Germany), accuracy is guaranteed; the laser welding machine, also from TRUMPF, ensures 100% gas tightness, together with advanced filling and testing devices. Fuse holder and circuit breakers peruse the newest the newest in AGP process. This makes the GLX a world leader in technology.GLX24 has already successfully been type tested in institutes around the world,including KEMA. Designed for MV network up to 24 kV, power stations, all the important industries, the versatile design of the GLX24, in both extendability and compact versions, ensures safe power supply for all.   Major Technical Highlights of RMU The RMU's tested at Short circuit current of 21.5kA-3s & 25kA- 1s, to have better strength against short circuit forces. Microprocessor based LASER welding is used for stainless steel gas tank, which is superior to Robotic/Manual TIG welding. This ensures complete leak-tight gas tank for the entire product life of 20 years, ensuring a leakage rate of 0.02% per Annam only & being lowest in the market. A state of the art Design , which ensures Insulation agility worth a partial discharge value less than 4 pf.   Application MV network up to 24 kV Power Stations and Industries Indoor and Outdoor Versions

ER 1000 Remote Terminal Unit (RTU), the building block of ERL Substation Automation System is designed to meet the present day utility and industry demands. The RTU is built on internationally well proven hardware and software platform. The standard hardware platform gives the necessary ruggedness and RTOS (Real-Time Operating System) provides the multi-tasking and Real-Time data handling capability. This makes the ER 1000 Automation Product of the 21st century. Application Gateway for communication between IEDs and Master station Data concentrator for storing data from the IEDs and transferring it to master station. Automation unit for building soft logic. Station level RTU for hardwired inputs.     FEATURES 32-bit High performance RISC (Reduced Instruction Set Computing) operating at >80 MHz Core Frequency. Memory SRAM (64Kbytes Internal and 2MB External) FLASH (512Kbytes). On board 10/100 Mbps Fast Ethernet Controller. On board 6 serial I/Os (RS232 and RS485) and 1 Debug Port. Add on serial I/O’s (RS232 / RS485 software configurable). Add on parallel I/Os (DI, DO, AI, RTD, AO counters etc) High Speed Back Plane Architecture. Equipped with Real-Time Operating System. Equipped with various industrial protocol stacks both at Bay level and Station level. Highly modular in hardware and software design. Redundancy in CPU / Power Supply / Communication Port available. User friendly Configuration Tools for ease of Configuration and Management. Flexible soft logic programing

The Control and Protection Systems cater to system voltages upto 400kV for transmission schemes and upto 500MW for generator schemes. A wide range of schemes are offered for distribution and industrial sectors that include transformer, busbar, capacitor bank and reactor applications. Using advanced manufacturing technologies, these control and protection systems are available in modular and compact designs. Product Range Generator Control Panel Transformer Panel Line Panel Bus coupler Panel Bus Sectionalizer Panel Metering Panel Control Desk Mosaic Mimic Panel Control Desk-cum-Mosaic Panel

MJT 314B (Self powered numerical over current protection) & MJT 314C (Self powered with series trip numerical over current protection) relay combines the power and flexibility of microprocessor technology with decades of experience in the field of protection. A wide range of protection elements and characteristics are supplemented by advance features such as metering, fault recorder and communication. MJT 314 (B&C) offers inverse time and definite time over current protection for phase fault and earth fault with communication Application Distribution Feeders Transmission lines AC machines Capacitor banks Transformers Used in Compact MV Switch boards with CB Where Auxiliary Voltage is not available or guaranteed  

MVT 181 is a numerical true RMS single pole relay consists of two elements. Each element can be selected for under voltage function or over voltage function or switched off. The characteristics setting, voltage setting and time multiplier setting are independently settable for each element and the voltage setting is in terms of voltage. Hence this relay can be used as a two stage under voltage or two stage over voltage protection. Multiple Characteristics:There are four operating characteristics for over voltage function and two operating characteristics for under voltage function. Overvoltage Characteristics:Definite Time Lag (DTL) Long Time Inverse (LTI) Extremely Inverse 1(El 1) Extremely Inverse 2(El 2) Undervoltage Characteristics:Definite Time Lag (DTL) Extremely Inverse 1(El 1) Two elements:Two stage O/V Two stage U/V Or one O/V and one U/V Timer:The relay is provided with two status inputs, one of which is to be connected across the circuit breaker auxiliary contact 52a. From this the circuit breaker closed or opened condition is found out. This information is used to introduce a time delay between successive switching of the capacitor banks which allows the capacitor bank to discharge to a safer value after disconnected from a live network. This timer function is a settable one and its output (N/O) contact is used in the closing circuit of the circuit breaker. The completion of this time delay is also indicated by ^TIMER^ LED in the front fascia. In addition the same status input can be used for Trip circuit supervision also. During other under voltage and over voltage applications this timer function can be disabled or used as an independent timer function. Trip Circuit Supervision:Pre-closing and post-closing supervision of the trip circuit and trip supply is possible with this relay. A low value of DC current is passed through the entire trip circuit to monitor the trip coil, its auxiliary switch and the associated wiring. One of the status input is connected across the tripping contact and another status input is connected across the 52a contact (auxiliary contact of the circuit breaker) in series with the trip coil. During trip circuit fail condition the monitoring current flow ceases and the energised status input drops off and the relay gives a contact output to indicate this condition. In addition to this contact an LED is provided in the front fascia to indicate the ^T.C. FAIL^ condition. A time delay of approximately 400 msecs has been given to avoid false trip circuit fail indication at the time of normal tripping. Thus trip circuit supervision is the integral part of the relay. If this function is not required the same can be put off in the setting menu.  

We are offering numerical multi function relays. Rho 3 is used for protection and management of medium and large motors and driven equipment it is ideally suited for pumps, conveyors, compressors, fans etc. standard features thermal overload protection (49) short circuit protection (50) earth fault protection (50n) stall and locked rotor protection (48) phase unbalance protection (46) undercurrent detection (37) optional 8 thermistor or resistance temperature detector (rtd) inputs restart inhibit protection limitation of number of starts upto 9 programmable digital inputs & upto 7 programmable output contacts trip circuit supervision (95) ct supervision lcd display communication protocol compatible with iec 60870-5-103 or modbus rtu fiber-optic rs485 communication port

the relay is suitable up to four shots. It consists of four cards viz.front fascia, power supply status input & output card and micro controller card are housed in a compact 3n non draw-out case. micro controller does the sequence control and timing function. The dip switches on the relay front fascia select different operating functions and time setting.there is a watchdog timer in the relay which continuously monitors the program, put off ^power on^ led indication if the watch dog timer elapses.to start an auto re close cycle, the initiating contact from the protective relay must be closed without chatter for at least 12 milliseconds.inputs:two optically isolated inputs are provided. One is used to take the three phase protection operated contact inputs to initiate the auto rec lose relay.the another input is used to block the re close functions if the external blocking input is initiated.reclose timer:the relay has four re-close timers. The relay selects the respective timer sequentially depending upon the number of re-close selection and the re-close initiation.reclaim timer:there is the common reclaim timer. It operates in series with the re-close timers. The over all reclaim time delay from the relay initiation to relay reset is therefore reclaim timer setting plus re-close time. For every initiation the reclaim time counting are resets automatically.lockout function:when the number of shots switch is in off mode the protection operated contact input initiation condition it will energize the lockout relay and lockout led indication and it blocks the re-close function.when the external blocking input is initiated, the re-close function is blocked and it energize external blocking led, lockout led and lockout relay.as the relay allows the maximum of four re-close depending upon the number of shots selection, the number of shots is less than the number of initiation within the reclaim time it will energize the lockout relay and its led indication.  

The relay comprises an attracted armature element fed via a rectifier and series resistor. It can be provided with either a fixed setting, or variable settings using a plug bridge. It has a minimum withstand of rated voltage continuously.  

RHO 3 is used for protection and management of medium and large motors and driven equipmentIt is Ideally suited for pumps, conveyors, compressors, fans etc.   Standard Features Thermal overload protection (49) Earth fault Protection (50N) Phase unbalance protection (46)

ERL offers a complete range of medium voltage switchgear for primary and secondary distribution developed from customer requirements. The main task of medium-voltage switchgear is cost-efficient and safe power distribution. This is a responsibility we accept, and that is why we offer services and solutions for all requirements of medium-voltage systems to our customers worldwide.     TRUMP 1 : Indoor Metal Clad Vacuum Switchgear (3.3kV, 6.6kV, 11kV)TRUMP 1 : Outdoor Metal Clad Vacuum Switchgear Kiosk (3.3kV, 6.6kV, 11kV)SPARK 1  : Outdoor Porcelain Clad Vacuum Switchgear (3.3kV, 6.6kV, 11kV)SPARK 3  : Outdoor Porcelain Clad Vacuum Switchgear (22kV, 33kV) ApplicationTRUMP 1       : Control & protection of underground cables, transformers, motors and capacitor banks SPARK 1 & 3 : Control & protection of overhead lines, transformers, motors and capacitor banks

iSIS is now the switchgear (up to 40.5 kV) with the smallest foot print in the world, reducing the foot print to 50% of GIS switchgear. ISIS is also the greenest switchgear as the insulation is provided by patented solid insulation technology and as such eliminates completely the use of green house gas of SF6. It has other patented features like phase segregated, independantly earthed and metal clad poles, and all active components are insulated with special patented epoxy material, making iSIS extremely safe from fire, explosion and water.Thus, iSIS will be an ideal replacement for the GIS around the world, in all applications where space is critical like in large metropolitan cities, windmill applications, offshore platforms etc. where safety is paramount like in oil, petrochemical, chemical and pharmaceutical industries and in all countries which are increasingly banning the use of SF6 gas in switchgear.Application Incoming and outgoing feeders Bus risers and sectionalizers Metering panels Tie panels Variety of switchgear panels in single and double bus bar variants

We offer Igis Ring Main Unit. IGIS Ring Main Unit (RMU) demonstrates a highly innovative and modern design that complements the latest production technology from Germany. IGIS guarantees highest accuracies and realizes almost 100% gas tightness. Manufactured with the latest filling and testing techniques, iGIS undoubtedly has a superior performance in the market of SF6 gas insulated ring main units. IGIS is a state of the art medium voltage switchgear that not only guarantees high operational safety, but also has a reliable indication of switching positions. The panels are type tested as per IEC standard 62271-200