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ALIND AN + Series User Manual

Numerical panto flashover protection relay
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NUMERICAL PANTO FLASHOVER PROTECTION
RELAY AR10 [AN+ SERIES]
USER MANUAL
ALUMINIUM INDUSTRIES LIMITED
RELAYS DIVISION, THIRUVANANTHAPURAM

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  • Page 1 NUMERICAL PANTO FLASHOVER PROTECTION RELAY AR10 [AN+ SERIES] USER MANUAL ALUMINIUM INDUSTRIES LIMITED RELAYS DIVISION, THIRUVANANTHAPURAM...

  • Page 2: Table Of Contents

    AR10 Numerical Panto Flashover Protection Relay CONTENTS SAFETY REQUIREMENTS AR10-I INTRODUCTION AR10-II HANDLING INSTALLATIONS & CASE DIMENSIONS AR10-III USER GUIDE AR10-IV TECHNICAL DATA & CHARACTERISTIC CURVES AR10-V TROUBLE SHOOTING AR10-VI COMMUNICATION AR10-VII RELAYS DIVISION...
  • Page 3 AR10-I Page 1 of 7 SAFETY REQUIREMENTS RELAYS DIVISION...
  • Page 4 AR10-I Page 2 of 7 SAFETY REQUIREMENTS CONTENTS INTRODUCTION HEALTH AND SAFETY SYMBOLS AND EXTERNAL LABELS ON THE RELAY INSTALLING, COMMISSIONING AND SERVICING _______ DECOMMISSIONING AND DISPOSAL TECHNICAL SPECIFICATION FOR SAFETY RELAYS DIVISION...
  • Page 5 AR10-I Page 3 of 7 SAFETY REQUIREMENTS INTRODUCTION Before using this product, be sure to read this chapter carefully. This chapter describes safety precautions when using the relay. Before installing and using the equipment, read and understand this chapter thoroughly. It’s not a secret –...
  • Page 6 A visual determination that all employees are clear of the circuits and equipments must be made. For any queries related to relays, feel free to contact ALIND. Warning: Before working at the rear of unit, isolate all voltage and current supplies.
  • Page 7 AR10-I Page 5 of 7 SAFETY REQUIREMENTS SYMBOLS AND LABELS USED IN THE RELAY FRONT SIDE Caution: refer to equipment Caution: risk of electric shock Caution: Over voltage documentation Cat.III REAR SIDE Protective Conductor (*Earth) terminal Functional/Protective Conductor (*Earth) terminal. Battery Socket Battery Lock CMOS Battery provided for the RTC (Real Time Clock) purpose.
  • Page 8 AR10-I Page 6 of 7 SAFETY REQUIREMENTS WARNING Current transformer circuit Never allow the current transformer (CT) secondary circuit connected to this equipment to be opened while the primary system is live. Opening the CT circuit will produce a dangerous high voltage. Exposed terminals Do not touch the terminals of this equipment while the power is on, as the high voltage generated is dangerous.
  • Page 9 AR10-I Page 7 of 7 SAFETY REQUIREMENTS Modification Do not modify this equipment, as this may cause the equipment to malfunction, and any such cases, warranty may be affected. DECOMMISIONING AND DISPOSAL De-commissioning The supply input (auxiliary) for the equipment may include capacitors across the supply or to earth.

  • Page 10: Ar10-Ii

    AR10-II Page 1 of 5 INTRODUCTION Relays Division...
  • Page 11 AR10-II INTRODUCTION Page 2 of 5 CONTENTS AN SERIES DESCRIPTION PREVIOUS HISTORY OF PANTO FLASHOVER PROTECTION RELAYS BRIEF DESCRIPTION OF AR10 MAIN FUNCTIONS GENERAL FUNCTIONS Relays Division...
  • Page 12 AR10-II INTRODUCTION Page 3 of 5 AN+ SERIES (ALIND NUMERICAL SERIES) Advanced Digital Fourier Transform based Numerical algorithm design using 32-bit Digital Signal  Controller. Compact Construction covering several protection modules viz Over Current Protection, Earth  Fault/ Restricted Earth Fault protection along with Trip Circuit supervision in single module thus saving panel space.
  • Page 13 AR10-II INTRODUCTION Page 4 of 5 Designed as per RDSO specification no. TI/SPC/PSI/PROTCT/7101 and 6072. ALIND RELAYS AR10X V & I Rating code Communication Code None Panto Flash Over Protection Protection naming codes Communication naming codes- X V & I Rating codes-X...
  • Page 14 AR10-II INTRODUCTION Page 5 of 5 AR10: The relay conforms to RDSO specification no. TI/SPC/PSI/PROTCT/6072. AR10 (AN+ Series) relay is a comprehensive Panto Flashover Protection relay for the protection of panto graph in conventional 25kV AC Traction system. MAIN FUNCTIONS Sl No.

  • Page 15: Ar10-Iii

    AR10-III Page 1 of 5 HANDLING INSTALLATIONS &CASE DIMENSIONS RELAYS DIVISION...
  • Page 16 AR10-III Page 2 of 5 HANDLING, INSTALLATIONS & CASE DIMENSIONS CONTENTS HANDLING OF RELAY STORAGE RELAY AND RACK MOUNTING CASE DIMENSIONS RELAYS DIVISION...
  • Page 17 AR10-III Page 3 of 5 HANDLING, INSTALLATIONS & CASE DIMENSIONS HANDLING OF RELAY Protective relays generally of robust construction require careful treatment prior to installation on site. Care must be taken when unpacking and installing the relays so that none of the parts are damaged. Relays must be handled by skilled personnel.
  • Page 18 AR10-III Page 4 of 5 HANDLING, INSTALLATIONS & CASE DIMENSIONS RELAY AND RACK MOUNTING RELAYS DIVISION...
  • Page 19 AR10-III Page 5 of 5 HANDLING, INSTALLATIONS & CASE DIMENSIONS CASE DIMENSIONS RELAYS DIVISION...

  • Page 20: Ar10-Iv

    AR10-IV Page 1 of 22 USER GUIDE RELAYS DIVISION...
  • Page 21 AR10-IV Page 2 of 22 USER GUIDE CONTENTS FRONT PANEL INDICATIONS INTERNAL ARCHITECTURE AND BLOCK DIAGRAM ENERGIZING THE RELAY PCB DESCRIPTION RELAY SETTINGS AND ALGORITHM RELAYS DIVISION...
  • Page 22 AR10-IV Page 3 of 22 USER GUIDE FRONT PANEL INDICATIONS RELAYS DIVISION...
  • Page 23 AR10-IV Page 4 of 22 USER GUIDE Legend LCD DISPLAY PROTECTION HEALTHY (Green/Amber) TRIP (RED) UPLINE (Red) DOWN LINE (Red) LBB (RED) RELAY DISABLE (RED) PT1 HEALTHY (Red) PT2 HEALTHY (Red) PT3 HEALTHY (Red) PT4 HEALTHY (Red) RELAY ERROR (Red) >...
  • Page 24 AR10-IV Page 5 of 22 USER GUIDE LCD DISPLAY A 20 x 4 LCD display is provided for easy viewing of parameters, relay settings, fault event records, date& time, error counter etc. The display backlit can be made ON by pressing any push button key and the display backlit ON time is settable.
  • Page 25 AR10-IV Page 6 of 22 USER GUIDE INTERNAL SYSTEM LEVEL ARCHITECTURE The internal system level architecture of relay including card to card architecture in brief is shown below. 1. DSP Controller The 32bit MCU (Digital Signal Controller) machine that combines the control advantages of a high-performance 32-bit microcontroller with the high computation speed of a fully implemented Digital Signal Processor (DSP).
  • Page 26 AR10-IV Page 7 of 22 USER GUIDE 4. Communication Module The relay is having three communications port, Front port: RJ45, Rear port: ETHERNET & RS485.The relay is using IEC 60870-5-103 & IEC 61850-communication protocol for communication through RS485 & ETHERNET. Front Port: 1) Communication Port RJ 45 port shall be provided for uploading/downloading relay settings and events.
  • Page 27 AR10-IV Page 8 of 22 USER GUIDE ENERGIZING THE RELAY 1. Before turning ON the relay, proper earthing should be provided. 2. Visual Inspection for any physical damage in housing, display etc. shall be checked. 3. Operating voltage range: 45 to 170 VDC. Rated Operating voltage: 110 V DC. 4.
  • Page 28 AR10-IV Page 9 of 22 USER GUIDE Controller PCB (640 262): The Controller PCB is mount on the backside of the Display PCB. This PCB consists of major components such as DSP controllers, ADC and its filter circuits, Memory ICs, RTC etc. The Analog signal get filtered and digitized in this board.
  • Page 29 AR10-IV Page 10 of 22 USER GUIDE RELAY ONLINE DISPLAY PARAMETERS After Power ON, the relay boot screen shows Then comes the online parameter display Window: Setting Mode  Press and hold for 5 seconds Relay will enter to setting mode. ...
  • Page 30 AR10-IV Page 11 of 22 USER GUIDE Relay Settings Algorithm Use SET key Use Left/Right key Use SET key Type password Use set key Use Left/Right key Use Left/Right key RELAYS DIVISION...
  • Page 31 AR10-IV Page 12 of 22 USER GUIDE Use SET key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key for selection use SET key then u Use SET key for change the settings & Use Left/Right key, se SET key.
  • Page 32 AR10-IV Page 13 of 22 USER GUIDE Use Right key Use Left/Right key Use SET key Use Left/Right key Type password Use set key Use SET key Type password Use set key Use SET key Type password Use set key Use Left/Right key Use Left/Right key, for next window press both Left &...
  • Page 33 AR10-IV Page 14 of 22 USER GUIDE Use Left/Right key Use set key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key RELAYS DIVISION...
  • Page 34 AR10-IV Page 15 of 22 USER GUIDE Use SET key Use Left/Right key Use Left/Right key Use Left/Right key, for next window press both Left & Right keys simultaneously Use Left/Right key Use SET key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key...
  • Page 35 AR10-IV Page 16 of 22 USER GUIDE Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key Use Left/Right key RELAYS DIVISION...
  • Page 36 AR10-IV Page 17 of 22 USER GUIDE To access & clear logs Use this key Use Set Key Use Set Key Use Set Key Use Set Key Use Right Key Use Left/Right Key Use Set Key Use Set Key Use Set Key Use Left/Right Key Use Set Key RELAYS DIVISION...
  • Page 37 AR10-IV Page 18 of 22 USER GUIDE To view device Info. Use Right Key For Relay healthiness check & I/O Verification Use Left key Use Set Key Use Set Key & Enter password Use Right Key Use Right Key for next & SET key for contact making Use Set Key RELAYS DIVISION...
  • Page 38 AR10-IV Page 19 of 22 USER GUIDE Use Right Key for next & Use Set Key SET key for contact making Use Right Key Use Set Key Use Right Key for next move of cursor Use Right key & corresponding name shows in display Use Set Key Use Right key Use Set Key...
  • Page 39 AR10-IV Page 20 of 22 USER GUIDE Binary Output & Input Details Binary Output 1 Binary Output 2 Binary Input NAME NAME TB NUMBER NAME NUMBER NUMBER TB B2 - 1 & 3 , 2 & TB B1 - Trip CB1 Relay Bypass TB A - 8 &...
  • Page 40 AR10-IV Page 21 of 22 USER GUIDE Binary Output 1 Terminal Block Name Terminal block numbers Name of Function Binary Output Contacts. Use Left</>Right key for selecting previous or next contact & moving cursor also change the corresponding name in ...
  • Page 41 AR10-IV Page 22 of 22 USER GUIDE Binary Input Terminal Block Name Terminal block numbers Name of Function Use left</>Right key for selecting previous or next contact & moving cursor also change the corresponding name in display. When 110 DC (-ve) permanently supplied to the TB-B1-23 as status common and 110 DC (+ve) is given to the status pulse corresponding TB numbers in TB-B1.

  • Page 42: Ar10-V

    AR10–V Page 1 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES RELAYS DIVISION...
  • Page 43 AR10 -V Page 2 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES CONTENTS DESCRIPTION OF PROTECTION FUNCTIONS TECHNICAL SPECIFICATIONS GENERAL SETTINGS TB DETAILS RELAY CONFORMING STANDARDS RELAYS DIVISION...
  • Page 44 AR10 -V Page 3 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES 5.1 DESCRIPTION OF PROTECTION FUNCTIONS Panto flash over protection relay should be included in the protection scheme for a traction network wherever insulated overlaps (IOL) are involved. Whenever there is a tripping of circuit breaker due to intermittent fault on one of the sides of IOL, and an electric train enters from live section to dead section of the IOL, there shall be heavy flash over when the panto graph leaves IOL.
  • Page 45 AR10 -V Page 4 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES All the above conditions can take place either during normal feed condition or during feed extension from adjacent substation. The indication type PTs PT I to PT IV, 27 kV/100 V, on either side of the overlap indicates OHE healthiness status continuously.
  • Page 46 AR10 -V Page 5 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES UP LINE TRIP (CB1 normal TRIP) normal RELAY HEALTHY normal RELAY HEALTHY DN LINE TRIP (CB1 normal TRIP) DN LINE TRIP (CB1 normal TRIP) normal RELAY HEALTHY UP LINE TRIP (CB1 normal TRIP) DN LINE TRIP (CB1...
  • Page 47 AR10 -V Page 6 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES Extended feed condition Under the extended feed condition, i.e. in case the feed is extended to the failed TSS, the relay shall be disabled. This shall be recognised by the relay from the status of the feeder interrupters BM1, BM2, BM3, BM4 and the coupling interruptor BMC1 (52I3).
  • Page 48 AR10 -V Page 7 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES 5.3 RELAY SETTINGS Settings Particulars Password protection (YES/NO) 0000-9999 1. General Config. PT Primary 100-30000V in steps of 10V PT Secondary 100/110V Post fault cycles 0-5 in steps of 1 0 –...
  • Page 49 AR10 -V Page 8 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES 5.4 TB DETAILS RELAYS DIVISION...
  • Page 50 AR10 -V Page 9 of 9 TECHNICAL DATA & CHARACTERISTIC CURVES RELAY CONFORMING STANDARDS The relay conforms to the following standards: Standards Description UNCTIONAL EQUIREMENTS FOR NDER IEC 60255-151 URRENT ROTECTION NSULATION COORDINATION OF MEASURING RELAYS AND IEC 60255-5 PROTECTION EQUIPMENT REQUIREMENTS AND TESTS EASURING RELAYS AND PROTECTION EQUIPMENT III.

  • Page 51: Ar10-Vi

    AR10-VI Page 1 of 2 TROUBLE SHOOTING RELAYS DIVISION...

  • Page 52: Ar10-Vii

    AR10-VI Page 2 of 2 TROUBLESHOOTING Under normal working conditions, the ‘PROTECTION HEALTHY LED’ provided in the front panel of the relay glows green. The same LED turns amber to recognize any fault inside the relay itself. Following are certain guidelines for the relay to identify the nature of fault and necessary checking procedures to be adopted at site so that relay can be rectified suitably.
  • Page 53 SCADA COMMUNICATION INTERFACE AS PER IEC 60870-5-103 PROTOCOL VERSION 1.00 TYPE – AR 10 RELAY DESIGNED AS PER RDSO SPECIFICATION NO. TI/SPC/PSI/PROTCT/6072 ALUMINIUM INDUSTRIES LIMITED RELAYS DIVISION...
  • Page 54 [IEC 60870-5-103 COMMUNICATION INTERFACE – AR 27] August 25, 2021 PROTOCOL MAPPING SYSTEM FUNCTIONS IN MONITOR DIRECTIONS ASDU DESCRIPTION TYPE End of general interrogation Time synchronization According to main Reset FCB According to main Reset CU According to main Reset CU/Start/Restart STATUS INDICATIONS IN MONITOR DIRECTION ASDU DESCRIPTION...
  • Page 55 [IEC 60870-5-103 COMMUNICATION INTERFACE – AR 27] August 25, 2021 FAULT INDICATION IN (MONITOR DIRECTIONS) ASDU DESCRIPTION TYPE  Breaker Failure (LBB)  Start/pickup CB1 Down line  Start/pickup CB1 Up line  Start/pickup CB2 Down line  Start/pickup CB2 Up line *Start/pickup CB1 Down line ...
  • Page 56 [IEC 60870-5-103 COMMUNICATION INTERFACE – AR 27] August 25, 2021 STANDARD INFORMATION NUMBERS IN CONTROL DIRECTION SYSTEM FUNCTIONS IN CONTROL DIRECTION ASDU DESCRIPTION TYPE Initiation of general interrogation Time Synchronization GENERAL COMMANDS IN CONTROL DIRECTION ASDU DESCRIPTION TYPE  (PULSE) RCC Reset ...
  • Page 57 [IEC 60870-5-103 COMMUNICATION INTERFACE – AR 27] August 25, 2021 124/127 CB4 UP LINE TRIP OUTPUT 124/85 LBB TRIP OUTPUT 124/130 CATENARY PT-1 DEAD OUTPUT 124/131 CATENARY PT-2 DEAD OUTPUT 124/132 CATENARY PT-3 DEAD OUTPUT 124/133 CATENARY PT-4 DEAD OUTPUT 124/25 RELAY DISABLE INPUT...
  • Page 58 Model Implementation Conformance Statement for the IEC 61850 interface in ALIND AR 10 relay version 1.0 Based on UCA International Users Group Testing Sub Committee Template version 1.0 Date: April 24, 2008 TITLE: MICS Ver. MICS DOCUMENT FOR AR 10 RELAY...
  • Page 59 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 Index PAGE INDEX…………………………………………………………………………………………………………………………………………….2 1. Introduction………………………………………………………………………………………………..………………………..…4 2. Logical Device…………………………………………………………………………………………………………………..……..5 3. Logical Node List………………………………………………………………………………………………………………………7 4. Logical Nodes.………………………………………………………………………………………………………………………….8 4.1 GGIO_FDR_5C………………………………………………………………………………………………………….8 4.2 GGIO_FDR_ALM8.….…………………………………………………………………………………………………9 4.3 GGIO_FDR_BI10……………………………………………………………………………………………………….9 4.4 LLN01 …………………………………………………………………………………………………………….………10 4.5 LLN02 .……………………………………………………………………………………………………………………10 4.6 LLN03 .……………………………………………………………………………………………………………………10 4.7 LLN04 ...…………………………………………………………………………………………………………….……10 4.8 LLN05 …………….………………………………………………………………………………………………………11 4.9 LPHD_FDR .…………………………………..………………………………………………………………………..11 4.10 MMXN_FDR_MTR..…………………………………..………………………………………………………..11...
  • Page 60 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 4.21 RBRF_FDR……………………………………..…………………………………………………………………..13 4.22 RDRE_FDR ..…………………………………..………………………………..…………………………………..14 5. Enum types ..………………………………………………………………………………………………………………………….15 5.1 Mod …………….…………………………………………………………………………………………………………15 5.2 ctlModel..…….…………………………………………………………………………………………………………15 5.3 Health…...…….…………………………………………………………………………………………………………15 ALUMINIUM INDUSTRIES LTD. | RELAYS DIVISION...
  • Page 61 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 1. Introduction This model implementation conformance statement is applicable for ALIND AR 27 relay. The definitions of all used Logical Devices, Logical Nodes and their associated Common Data Classes, components and associated enumerated values are also included for completeness.
  • Page 62 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 2. Logical Device Logical Device Description CONTROL Controls Domain MEASUREMENT Measurements Domain PROTECTION Protection Domain RECORDS Fault Records Domain SYSTEM System Domain Logical Device data model Logical Device Logical Node Instance Logical Node type Description LLN0 for Logical Device...
  • Page 63 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 Thermal Overload TH_OL_PTTR1 PTTR_FDR protection UV_PTUV1 PTUV_FDR Under Voltage Protection LBB_RBRF1 RBRF_FDR Breaker Failure LLN0 for Logical Device LLN0 LLN04 RECORDS RECORDS RDRE1 RDRE_FDR Disturbance recorder LLN0 for Logical Device LLN0 LLN05 SYSTEM Physical Device...
  • Page 64 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 3. Logical Node List Following list contains list of logical node classes implemented in device G: Logical Nodes for generic references GGIO (Generic Process I/O) System Logical Nodes LLN0 (Logical device LN) LPHD (Physical device LN) Logical Nodes for metering and measurement MMXN (Non-Phase Related Measurements)
  • Page 65 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 4. Logical Nodes The following table use • M: Data object is mandatory in the IEC 61850-7-4 ED.2. • O: Data object is optional in the IEC 61850-7-4 ED.2 and is used in the device •...
  • Page 66 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 4.3 Logical Node: GGIO_PF_BI12 Description: Generic Process I/O LN Class: GGIO Data Object CDC type Description Common Logical Node Information Behavior Status Information General Indication Ind1 (RCC reset) General Indication Ind2 (CB1 close status) General Indication Ind3...
  • Page 67 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 4.4 Logical Node: LLN01 Description: Logical Node Zero (Logical Node for Logical Device CONTROL) LN Class: LLN0 Data Object CDC type Description Common Logical Node Information Behavior Mode Health Health NamPlt Name Plate 4.5 Logical Node: LLN02 Description: Logical Node Zero (Logical Node for Logical Device MEASUREMENT)
  • Page 68 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 4.8 Logical Node: LLN05 (Logical Node Zero for Logical Device SYSTEM) Description: Logical Node Zero LN Class: LLN0 Data Object CDC type Description Common Logical Node Information Behavior Mode Health Health NamPlt Name Plate 4.9 Logical Node: LPHD_PF...
  • Page 69 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 4.12 Logical Node: DN1WBM_PTOV1 Description: Overvoltage Protection LN Class: PTOV Data Object CDC type Description Common Logical Node Information Behavior Status Information Start Operate 4.13 Logical Node: UP1WBM_PTOV1 Description: Overvoltage Protection LN Class: PTOV Data Object CDC type...
  • Page 70 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 4.16 Logical Node: PTTR_FDR Description: Thermal Overload Protection LN Class: PTTR Data Object CDC type Description Common Logical Node Information Behavior Status Information Start Operate 4.17 Logical Node: PTUV_FDR Description: Under Voltage Protection LN Class: PTUV Data Object CDC type...
  • Page 71 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 Common Logical Node Information Behavior Status Information RcdMade TRUE = disturbance recording complete FltNum Fault Number ALUMINIUM INDUSTRIES LTD. | RELAYS DIVISION...
  • Page 72 [MICS DOCUMENT FOR AR 10 RELAY] September 22, 2021 5. Enum types Enum types used are listed in this clause. 5.1 Mod Value Description blocked test test/blocked 5.2 ctlModel Value Description status-only direct-with-normal-security sbo-with-normal-security direct-with-enhanced-security sbo-with-enhanced-security 5.3 Health Value Description Warning Alarm ALUMINIUM INDUSTRIES LTD.
  • Page 73 ALUMINIUM INDUSTRIES LTD Relays division, Kavinpuram, Vilappilsala (P.O) Thiruvananthapuram, Kerala, India-695 573 ☎: 0471-2379704, 2379503 �� : www.alindrelays.com ✉ : contact@alindrelays.com (enquiry) ✉ : service@alindrelays.com (service) _______________________________________________________________________________________ Subject to change without notice publishing: 08/2022...

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