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MD1501 Series Auxiliary Relay Instruction Manual NR Electric Co , Ltd Preface MD1501 Series Auxiliary Relay i Date 2017 08 17 Preface Introduction This guide and the relevant operating or service manual documentation for the equipment provide full information on safe handling, commissioning and testing of this equipment Documentation for equipment ordered from NR is dispatched separately from manufactured goods and may not be received at the same time Therefore, this guide is provided to ensure.
MD1501 Series Auxiliary Relay Instruction Manual NR Electric Co., Ltd Preface Preface Introduction This guide and the relevant operating or service manual documentation for the equipment provide full information on safe handling, commissioning and testing of this equipment Documentation for equipment ordered from NR is dispatched separately from manufactured goods and may not be received at the same time Therefore, this guide is provided to ensure that printed information normally present on equipment is fully understood by the recipient Before carrying out any work on the equipment, the user should be familiar with the contents of this manual, and read relevant chapter carefully This chapter describes the safety precautions recommended when using the equipment Before installing and using the equipment, this chapter must be thoroughly read and understood Health and Safety The information in this chapter of the equipment documentation is intended to ensure that equipment is properly installed and handled in order to maintain it in a safe condition When electrical equipment is in operation, dangerous voltages will be present in certain parts of the equipment Failure to observe warning notices, incorrect use, or improper use may endanger personnel and equipment and cause personal injury or physical damage Before working in the terminal strip area, the equipment must be isolated Proper and safe operation of the equipment depends on appropriate shipping and handling, proper storage, installation and commissioning, and on careful operation, maintenance and servicing For this reason, only qualified personnel may work on or operate the equipment Qualified personnel are individuals who: Are familiar with the installation, commissioning, and operation of the equipment and of the system to which it is being connected; Are able to safely perform switching operations in accordance with accepted safety engineering practices and are authorized to energize and de-energize equipment and to isolate, ground, and label it; Are trained in the care and use of safety apparatus in accordance with safety engineering practices; Are trained in emergency procedures (first aid) Instructions and Warnings The following indicators and standard definitions are used: MD1501 Series Auxiliary Relay i Date: 2017-08-17 Preface DANGER! means that death, severe personal injury and considerable equipment damage will occur if safety precautions are disregarded WARNING! means that death, severe personal and considerable equipment damage could occur if safety precautions are disregarded CAUTION! means that light personal injury or equipment damage may occur if safety precautions are disregarded NOTICE! is particularly applies to damage to device and to resulting damage of the protected equipment DANGER! NEVER allow a open current transformer (CT) secondary circuit connected to this device while the primary system is live Open CT circuit will produce a dangerously high voltage that cause death WARNING! ONLY qualified personnel should work on or in the vicinity of this device This personnel MUST be familiar with all safety regulations and service procedures described in this manual During operating of electrical device, certain part of the device is under high voltage Severe personal injury and significant device damage could result from improper behavior WARNING! Do NOT touch the exposed terminals of this device while the power supply is on The generated high voltage causes death, injury, and device damage WARNING! Thirty seconds is NECESSARY for discharging the voltage Hazardous voltage can be present in the DC circuit just after switching off the DC power supply CAUTION! Earthing Securely earthed the earthing terminal of the device Operating environment ONLY use the device within the range of ambient environment and in an environment free of abnormal vibration ii MD1501 Series Auxiliary Relay Date: 2017-08-17 Preface Ratings Check the input ratings BEFORE applying AC voltage/current and power supply to the device Printed circuit board Do NOT attach or remove printed circuit board if the device is powered on External circuit Check the supply voltage used when connecting the device output contacts to external circuits, in order to prevent overheating Connection cable Carefully handle connection cables without applying excessive force NOTICE! The firmware may be upgraded to add new features or enhance/modify existing features, please MAKE SURE that the version of this manual is compatible with the product in your hand Copyright © 2017 NR All rights reserved We reserve all rights to this document and to the information contained herein Improper use in particular reproduction and dissemination to third parties is strictly forbidden except where expressly authorized The information in this manual is carefully checked periodically, and necessary corrections will be included in future editions If nevertheless any errors are detected, suggestions for correction or improvement are greatly appreciated We reserve the rights to make technical improvements without notice NR ELECTRIC CO., LTD Tel: +86-25-87178888 Headquarters: 69, Suyuan Avenue, Jiangning, Nanjing 211102, China Fax: +86-25-87178999 Manufactory: 18, Xinfeng Road, Jiangning, Nanjing 211111, China Website: www.nrelect.com, www.nrec.com PN: ZL_MD1501 Series_X_Instruction Manual_EN_Overseas General_X MD1501 Series Auxiliary Relay Version: R1.03 iii Date: 2017-08-17 Preface Documentation Structure The manual provides a functional and technical description of this relay and a comprehensive set of instructions for the use and application of MD1501 series auxiliary relays All contents provided by this manual are summarized as below: Introduction Briefly introduce the application, functions and features about MD1501 series auxiliary relays Technical Data Introduce the technical data about MD1501 series auxiliary relays, such as electrical specifications, mechanical specifications, ambient temperature and humidity range, type tests and the certifications that our products have passed Operation Theory Introduce a detailed functional description of each auxiliary relay Installation Introduce the recommendations on unpacking, handling, inspection and storage of the relay A guide to the mechanical and electrical installation of this relay is also provided, incorporating earthing recommendations Commissioning Introduce how to commission the relay, comprising checks on the calibration and functionality of the relay Maintenance A general maintenance policy for the relay is outlined Decommissioning and Disposal A general decommissioning and disposal policy for the relay is outlined Manual Version History List the instruction manual version and the modification history records iv MD1501 Series Auxiliary Relay Date: 2017-08-17 Introduction Introduction Table of Contents Introduction 1-a 1.1 Application 1-1 1.2 Function 1-1 1.3 Features 1-1 1.4 Type 1-1 MD1501 Series Auxiliary Relay 1-a Date: 2017-08-17 Introduction MD1501 Series Auxiliary Relay 1-b Date: 2017-08-17 Introduction 1.1 Application MD1501 series auxiliary relays are of various functions mainly used with main protection and control device in modular design Each relay type is designed with specific function Each relay is independent from each other with high configurability and extensibility Relay types are continuously developed in order to meet the requirement of various applications 1.2 Function MD1501 series auxiliary relays provide functions as follows: Trip circuit supervision Lockout function Tripping relay function Repeat relay function (voltage operated or current operated) AC voltage switching function 1.3 Features Types of relay of dedicated function are available and can be flexible combined to meet with requirement of various applications Completely-sealed, high-resistance and small power consumption relays are used, power consumption and heat dissipation are greatly reduced and moisture proof is improved, hence the security of relay is increased Adaptive mounting modes, the relay modules can be accommodated in a casing installed on a panel as a relay device High burden of the relay for tripping or closing circuit breaker has strong interference withstand capability More spare relays can be provided and flexible applied 1.4 Type MD1501 series auxiliary relays can be classified in following types according to their functions Table 1.4-1 Types of MD1501 series auxiliary relay Type Applications MD1501-551 Trip circuit supervision with current operated auxiliary relay MD1501-552 Phase segregated trip circuit supervision MD1501-556 Current operated auxiliary relay (3 elements) MD1501-561 Bi-stable switching relay MD1501-571 Electrical reset auxiliary element with internal operating coil supervision (high burden) MD1501 Series Auxiliary Relay 1-1 Date: 2017-08-17 Introduction MD1501-572 Self reset auxiliary relay with electrical reset LED indicator (high burden) NOTICE! Devices may be upgraded to amend or enhance functions, please ENSURE that this manual version is compatible with your devices MD1501 Series Auxiliary Relay 1-2 Date: 2017-08-17 Commissioning 5-b MD1501 Series Auxiliary Relay Date: 2017-08-17 Commissioning 5.1 General Before carrying out any work on the equipment, the user should be familiar with the contents of the safety and technical data sections and the ratings on the equipment’s rating label 5.2 Safety Instructions WARNING! HAZARDOUS voltages are present in this electrical equipment during operation Non-observance of the safety rules can result in severe personal injury or property damage WARNING! ONLY the qualified personnel shall work on and around this equipment after becoming thoroughly familiar with all warnings and safety notices of this manual as well as with the applicable safety regulations Particular attention must be drawn to the following: Hazardous voltages can be present on all circuits and components connected to the supply voltage or to the measuring and test quantities The limit values stated in the Chapter “Technical Data” must not be exceeded at all, not even during testing and commissioning When testing the device with secondary test equipment, make sure that no other measurement quantities are connected Take also into consideration that the trip circuits and maybe also close commands to the circuit breakers and other primary switches are disconnected from the device unless expressly stated WARNING! Primary test may ONLY be carried out by qualified personnel, who are familiar with the commissioning of protection system, the operation of the plant and safety rules and regulations (switching, earthing, etc.) 5.3 Commission Tools Minimum equipment required: Multifunctional protection tester (for example: CMC356 multifunctional protection tester of Omicron) MD1501 Series Auxiliary Relay 5-1 Date: 2017-08-17 Commissioning Multimeter with suitable AC voltage range of 0~500V and DC voltage range of 0~250V respectively NOTICE! Modern test set may contain many of the above features in one unit Optional equipment: An electronic or brushless insulation tester with a DC output not exceeding 500V (for insulation resistance test when required) 5.4 Product Checks These product checks cover all aspects of the relay which should be checked to ensure that it has not been physically damaged prior to commissioning, is functioning correctly and all input quantity measurements are within the stated tolerances 5.4.1 With the Relay De-energized This relay is fully numerical and the hardware is continuously monitored Commissioning tests can be kept to a minimum and need only include hardware tests and conjunctive tests The function tests are carried out according to user’s correlative regulations 5.4.1.1 Visual Inspection After unpacking the product, check for any damage to the relay case If there is any damage, internal module might also have been affected, contact the vendor The following items listed is necessary Protection panel Carefully examine the protection panel, equipment inside and other parts inside to see that no physical damage has occurred since installation The rated information of other auxiliary protections should be checked to ensure it is correct for the particular installation Panel wiring Check the conducting wire which is used in the panel to assure that their cross section meeting the requirement Carefully examine the wiring to see that they are no connection failure exists Label Check all the isolator binary inputs, terminal blocks, indicators, switches and push buttons to make sure that their labels meet the requirements of this project Earthing cable Check whether the earthing cable from the panel terminal block is safely screwed to the panel 5-2 MD1501 Series Auxiliary Relay Date: 2017-08-17 Commissioning steel sheet Switch, keypad, isolator binary inputs and push button Check whether all the switches, equipment keypad, isolator binary inputs and push buttons work normally and smoothly 5.4.1.2 Insulation Test (if required) Insulation resistance tests are only necessary during commissioning if it is required for them to be done and they have not been performed during installation Isolate all wiring from the earth and test the isolation with an electronic or brushless insulation tester at a DC voltage not exceeding 500V, The circuits need to be tested should include: Optic-isolated control inputs Output contacts Grounding terminal The insulation resistance should be greater than 100MΩ at 500V Test method: To unplug all the terminals sockets of this relay, and the insulation resistance test for each circuit above with an electronic or brushless insulation tester On completion of the insulation resistance tests, ensure all external wiring is correctly reconnected to the equipment 5.4.1.3 External Wiring Check that the external wiring is correct to the relevant relay diagram and scheme diagram Ensure as far as practical that phasing/phase rotation appears to be as expected Check the wiring against the schematic diagram for the installation to ensure compliance with the customer’s normal practice 5.4.1.4 Auxiliary Power Supply The relay only can be operated under the auxiliary power supply depending on the relay’s nominal power supply rating The incoming voltage must be within the operating range specified in Chapter 2, before energizing the relay, measure the auxiliary supply to ensure it within the operating range Other requirements to the auxiliary power supply are specified in Chapter See this section for further details about the parameters of the power supply WARNING! Energize this relay ONLY if the power supply is within the specified operating ranges in Chapter MD1501 Series Auxiliary Relay 5-3 Date: 2017-08-17 Commissioning 5.4.2 With the Relay Energized The following check verify that the relay hardware is functioning correctly and should be carried out with the auxiliary supply applied to the relay The trip circuit should also remain isolated to prevent accidental operation of the associated circuit breaker for these checks Testing the Binary Inputs and Binary Outputs This test checks that all the binary inputs and binary outputs on the equipment are functioning correctly Ensure that the voltage applied on the binary input must be within the operating range The binary inputs should be energized one at a time, see external connection diagrams for terminal numbers If the relay circuit is operating normally and corresponding binary output is energized, it means the binary input is valid 5.4.3 Final Checks After the above tests are completed, remove all test or temporary shorting leads, etc If it has been necessary to disconnect any of the external wiring from the protection in order to perform the wiring verification tests, it should be ensured that all connections are replaced in accordance with the relevant external connection or scheme diagram Ensure the equipment is put into service, and make sure that all abnormality that may effect the device have been cleared and signal indicators have been reset 5-4 MD1501 Series Auxiliary Relay Date: 2017-08-17 Maintenance Maintenance Table of Contents Maintenance 6-a 6.1 Failure Tracing and Repair 6-1 6.2 Replace Failed Relay 6-1 6.3 Cleaning 6-2 6.4 Storage 6-2 MD1501 Series Auxiliary Relay 6-a Date: 2017-08-17 Maintenance 6-b MD1501 Series Auxiliary Relay Date: 2017-08-17 Maintenance After installation, regular maintenance of the equipment is recommended If the equipment runs under harsh natural conditions and operates rarely, then regularly confirm whether the device is operating normally and the external wiring is good 6.1 Failure Tracing and Repair Failures will be detected by automatic supervision or regular testing When a failure is detected during regular testing, confirm the following: Test circuit connections are correct Correct power supply voltage is applied Test procedures comply with those stated in the manual 6.2 Replace Failed Relay If the failure is identified in the relay and the user has spare relays, the user can recover the relay by replacing the failed relay Repair at the site should be limited to relay replacement Maintenance at the component level is not recommended Check that the replacement relay has an identical type and rated parameters to the removed relay Furthermore The relay type is indicated on the relay CAUTION! When handling a relay, take anti-static measures such as wearing an earthed wrist band and placing modules on an earthed conductive mat Otherwise, many of the electronic components could suffer from damages WARNING! Hazardous voltage can be present in the DC circuit just after switching off the DC power supply It takes approximately 30 seconds for the voltage to discharge WARNING! Units and modules may ONLY be replaced while the supply is switched off and only by appropriately trained and qualified personnel Strictly observe the basic precautions to guard against electrostatic discharge MD1501 Series Auxiliary Relay 6-1 Date: 2017-08-17 Maintenance DANGER! After replacing relays, BE SURE to check that the external wiring is same as that before the replacement If this is not the case, there is a danger of the unintended operation of switchgear taking place or of relays not functioning correctly Persons may also be put in danger 6.3 Cleaning Before cleaning the relay, ensure that DC supply is isolated to prevent any chance of an electric shock Use a smooth cloth to clean the front panel Do not use abrasive material or detergent chemicals 6.4 Storage The spare relay or module should be stored in a dry and clean room Based on IEC standard 60255-1 the storage temperature should be from -40°C to 70°C, but the temperature of from -10°C to 40°C is recommended for long-term storage 6-2 MD1501 Series Auxiliary Relay Date: 2017-08-17 Decommissioning and Disposal Decommissioning and Disposal Table of Contents Decommissioning and Disposal 7-a 7.1 Decommissioning 7-1 7.2 Disposal 7-1 MD1501 Series Auxiliary Relay 7-a Date: 2017-08-17 Decommissioning and Disposal 7-b MD1501 Series Auxiliary Relay Date: 2017-08-17 Decommissioning and Disposal 7.1 Decommissioning Switching off To switch off the external miniature circuit breaker of the power supply Disconnecting Cables Disconnect the cables connected to the equipment DANGER! Before disconnecting the power supply cables that connected with the equipment, MAKE SURE that the external miniature circuit breaker of the power supply is switched off Dismantling The equipment may now be removed from the system cubicle, after which the cubicles may also be removed DANGER! When the station is in operation, MAKE SURE that there is an adequate safety distance to live parts, especially as dismantling is often performed by unskilled personnel 7.2 Disposal In every country there are companies specialized in the proper disposal of electronic waste NOTICE! STRICTLY observe all local and national regulations when disposing of the device MD1501 Series Auxiliary Relay 7-1 Date: 2017-08-17 Decommissioning and Disposal 7-2 MD1501 Series Auxiliary Relay Date: 2017-08-17 Manual Version History Manual Version History In the latest version of the instruction manual, several descriptions on existing features have been modified Manual version and modification history records Manual Version Source New R1.00 Date 2012-06-04 Description of change Form the original manual Main technical data of each type are removed to Chapter 2; R1.00 R1.01 2013-01-21 Add a kind of output contact mode for type MD1501-571; Breaking capacity for contact is modified R1.01 R1.02 2013-04-26 R1.02 R1.03 2017-08-17 The definition of n15 and n16 for type MD1501-561 are exchanged The parameters of MD1501-551, MD1501-552 and MD1501-571 are modified MD1501 Series Auxiliary Relay 8-1 Date: 2017-08-17 Manual Version History 8-2 MD1501 Series Auxiliary Relay Date: 2017-08-17 ... www.nrec.com PN: ZL _MD1501 Series_ X_ Instruction Manual_ EN_ Overseas General _X MD1501 Series Auxiliary Relay Version: R1. 03 iii Date: 2017-08-17 Preface Documentation Structure The manual provides... operated auxiliary relay (3 elements) MD1501- 561 Bi-stable switching relay MD1501- 571 Electrical reset auxiliary element with internal operating coil supervision (high burden) MD1501 Series Auxiliary... MD1501 series auxiliary relay Type Applications MD1501- 551 Trip circuit supervision with current operated auxiliary relay MD1501- 552 Phase segregated trip circuit supervision MD1501- 556 Current