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ELM Earth Leakage

Protection Relay

USER MANUAL

121408 ISSUE 4 15/02/11

ELM_Manual_Issue_4_121408_150211.pdf

Designed  and  Manufactured  in  Australia  by
Ampcontrol  Pty  Limited  ACN  000  915  542
Phone: (02) 4956 5899   Fax:

(02) 4956 5985

www.ampcontrol.com.au

No copies of the information or drawings
within this manual shall be made without
the prior consent of Ampcontrol.

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Summary of Contents for ELM

Page 1: ...al_Issue_4_121408_150211 pdf Designed and Manufactured in Australia by Ampcontrol Pty Limited ACN 000 915 542 Phone 02 4956 5899 Fax 02 4956 5985 www ampcontrol com au No copies of the information or drawings within this manual shall be made without the prior consent of Ampcontrol ...

Page 2: ...s documentation and specifically disclaims any implied warranties or fitness for any particular purpose Ampcontrol further reserves the right to alter the specification of the system and or manual without obligation to notify any person or organisation of these changes Before You Begin We would like to take a moment to thank you for purchasing the ELM Earth Leakage Relay To become completely famil...

Page 3: ...eutral Protection 2 2 5 Earth Leakage Toroids 3 2 6 Toroid Selection 3 2 7 Toroid Installation Guidelines 3 3 ELM Earth Leakage Relay 3 1 Description 4 3 2 Methods of Earth Leakage Protection 4 3 3 Testing Procedure 4 3 4 Toroids 4 3 5 Mode of Operation 4 4 Specifications 5 5 Equipment List 5 6 Diagrams ELM Typical Installation Diagram 6 Core Balance E L System 7 Series Neutral E L System 8 Mounti...

Page 4: ...Installation in accordance with accepted State and Federal Regulations 6 Equipment maintained in accordance with industry standards 2 The Need for Earth Leakage Protection Unless properly controlled the occurrence of an earth fault can be hazardous because it may cause a Frame to earth voltages dangerous to personnel b Electric arcing which may initiate an explosion or fire when arcing occurs in a...

Page 5: ... not intended to take the place of sound installation practice and the regular maintenance and testing of electrical apparatus Care must be taken in the selection and installation of all electrical equipment with due regard to its required duty and the conditions under which it may be called upon to operate Where automatic earth leakage protection has been installed it is essential that its operat...

Page 6: ...etry decreases Nuisance tripping tends to occur when the total current rises such as when a large motor is started The following guidelines would help to avoid such problems 2 6 Toroid Selection 1 Select the smallest internal diameter toroid which will allow the cables to fit through Avoid very large toroids 200mm or toroids with square apertures 2 Only use approved toroids specified by Ampcontrol...

Page 7: ...re maximum protection the earth leakage system should be used in conjunction with the other protection systems covered by AS2081 The collective systems are designed to limit touch and step potentials The relay is also suitable for industry where equipment or system earth leakage protection is required The relay is not suitable for personal protection which requires trip levels of 20 30mA with inst...

Page 8: ...t be greater than 10VDC and less than 30VDC Relay Contacts 1 N O 1 C O Rated at 5A 250V 100VA maximum Trip and Time Delay Settings Two separate rotary 16 position switches set the trip and time delay parameters of the relay Switch Position Trip Level mA Time Delay mS 0 100 50 1 150 100 2 200 150 3 250 200 4 300 250 5 350 300 6 400 350 7 450 400 8 500 450 9 750 500 A 1000 750 B 1250 1000 C 1500 150...

Page 9: ...g Output Shown in the Relay Contacts De energised State Circuit Test 110Vac Alternative Toroid Position NC 2 Com 2 NO 2 Com 1 NO 1 PWR 2 PWR 1 Earth CT com CT sig 4 20mA 4 20mA Non Fail Safe Link Ext Reset Link 3 Link 2 Link 1 PLC Analog Input or Remote Indication Meter 10 30Vdc ELM 19 9 18 8 17 7 16 6 14 4 15 5 13 3 12 2 1 10 11 Optional ...

Page 10: ...ELM USER MANUAL ISSUE 4 7 CORE BALANCE EARTH LEAKAGE PROTECTION ...

Page 11: ... 8 SERIES NEUTRAL EARTH LEAKAGE PROTECTION ...

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