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1 EARTH LEAKAGE RELAY ELR VI Programmable Multi-function Relay Multifunction Meters Transducers & Isolators Temperature Controllers Converters & Recorders Digital Panel Meters Current Transformers Analogue Panel Meters EARTH LEAKAGE RELAY - ELR VI Programmable Multi-function Relay User Manual - Issue 1.0 Shunts Digital Multimeters Clamp Meters Insulation Testers SUBJECT TO CHANGE WITHOUT NOTICE This manual superseded all previous versions please keep for future reference
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4 1. INTRODUCTION Earth Leakage Relay: - The purpose of Earth-Leakage protection is to measure the Earth leakage current of an electrical installation, or part of an installation, and interrupt the power supply if the Earth-Leakage current becomes dangerous to property. Earth Leakage Relay with associated sensors (Core Balance Current Transformers), measure the leakage current in an electrical installation to detect levels that may be damaging. When used for protection, they cause an associated circuit breaker or switch to interrupt the supply of power to the protected system. Earth Leakage Relay may also be used to monitor earth-leakage in electrical insulation due to aging of cables or extensions in the installation. Continuous measurement of leakage currents makes it possible to plan maintenance on faulty circuits before an increase in the leakage currents leads to a complete shutdown of the installation. Alarming / Monitoring Applications :- A need to set up the relay for an alarm only (but not protection) may be encountered in situations where an automatic shutdown would introduce additional hazards and therefore an operator must make the shutdown decision (e.g., continuous industrial processes, life-support equipment, or a fire pump circuit). Critical processes of industrial machines can also benefit by application of Earth Leakage Relay in alarm mode. In these cases, providing indication of higher than normal earth-leakage current can allow planned maintenance, rather than a costly disruption of production. 4 Programmable Multi-function Relay Issue 1.0
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35 Trip Delay Pressing or key, meter will enter into edit mode. Pressing key increments digit value & Pressing key decrements digit value. Pressing ENTER key will confirm new trip Delay. After setting new trip Delay meter will goto Hysteresis (refer section ) Note: - 1. Alarm tripping delay will be Earth Leakage Current Trip delay. 2. If ELC (Earth Leakage Current) parameter is disabled then user can set Alarm delay upto 30 Sec. TABLE 2 (B): ELR+ Parameters Upper Limit Lower limit ELC.1(Earth Leakage Current 1) ALr.1(Alarm 1) ELC.2(Earth Leakage Current 2) ALr.2(Alarm 2) 30 sec 30 sec 30 sec 30 sec Note: ELR model has only ELC1 and Alarm1. TABLE 2 (C): ELR VI ELC.1(Earth Leakage Current 1) ALr.1(Alarm 1) PH.OC (Phase Over Current) PH.UC (Phase under Current) PH.OU (Phase Over Voltage) PH.uU (Phase under Voltage) 0 sec 0 sec 0 sec 0 sec Parameters Upper Limit Lower limit 30 sec 30 sec 30 sec 30 sec 0 sec 0 sec 0 sec 0 sec 0 sec 0 sec 30 sec 30 sec r.por (Reverse Power) 30 sec 0 sec Inverse-time tripping curve (applicable to Earth Leakage Current) :- The inverse-time tripping curve built into the Earth Leakage Relay optimize protection of property and enhance continuity of service. Protection is optimized because the higher the Earth Leakage current it detects, the faster the relay will operate. Issue 1.0 Programmable Multi-function Relay 35
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48 Earth Leakage Relay - ELR VI 48 Programmable Multi-function Relay Issue 1.0
49 L Earth Leakage Relay - ELR VI 8. CONNECTION DIAGRAMS A) DIN RAIL MOUNTABLE ELR: CBCT NC NC NC NC NC L N L N E Aux Supply L O A D S1 S2 5 6 EL1 ELR CBCT1 NC NC NC N L N E Aux Supply L O A D S1 S2 5 6 L EL1 N CBCT2 L O A D E EL 2 S1 S2 3 4 ELR+ Issue 1.0 Programmable Multi-function Relay 49
50 L Earth Leakage Relay - ELR VI Current Voltage Aux Supply CBCT NC L N S1 E S2 L N L O A D S1 S2 5 6 EL1 ELR - VI (For Earth to Neutral Voltage Measurement) Current 3 4 Voltage Aux Supply CBCT NC N L N S1 E S2 L O A D S1 S2 5 6 EL1 ELR-VI 50 Programmable Multi-function Relay Issue 1.0
51 L Earth Leakage Relay - ELR VI B) PANEL MOUNTABLE ELR: CBCT NC NC NC NC NC NC L N L N E Aux Supply L O A D S1 S2 1 2 EL1 ELR CBCT1 NC NC NC NC L N N E Aux Supply L O A D S1 S2 1 2 L EL1 N CBCT2 L O A D E EL 2 S1 S2 3 4 ELR+ Issue 1.0 Programmable Multi-function Relay 51
52 Current Voltage Aux Supply CBCT NC NC L N S1 E S2 L N L O A D S1 S2 1 2 EL1 ELR - VI (For Earth to Neutral Voltage Measurement) Current 3 4 Voltage Aux Supply CBCT NC NC L N S1 E S2 L N L O A D S1 S2 1 2 EL1 ELR-VI 52 Programmable Multi-function Relay Issue 1.0
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56 10. Core Balance Current Transformer (CBCT):- TWE - 73/30(50) TWE - 95/50(40) TWE - 135/85(30) TWE - 165/130(30) TWE - 260/200(22) 56 Programmable Multi-function Relay Issue 1.0
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58 Models : - > TWE - 73/30(50) > TWE - 95/50(40) > TWE - 135/85(30) > TWE - 165/130(30) CBCT Specications: - CBCT Type Turns Ratio Rated Current System Voltage System Frequency Insulation Voltage Distance Between CBCT and ELR Operating Temperature Features: - > Slim Design > Encapsulated CBCT > Compact in size > Light in Weight : Closed Toroid : 600 / 1A : 30A : 720 V maximum : 50 Hz or 60 Hz : 3kV for 1 minutw : < 1 meters : -10 C to +55 C 58 Programmable Multi-function Relay Issue 1.0
59 Dimensions :- OD ID Axial CBCT TWE - 73/30(50) TWE - 95/50(40) TWE - 135/85(30) TWE - 165/130(30) Dimensions (in mm) OD ID Axial L Current Ranges 30mA to 30A 30mA to 30A 30mA to 30A 500mA to 30A W H W CBCT L H W TWE - 260/200(22) Current Ranges 30mA to 30A Issue 1.0 Programmable Multi-function Relay 59
60 Contact Sifam Tinsley Instrumentation Ltd 1 Warner Drive Springwood Industrial Estate Braintree, Essex CM7 2YW Tel: sales@sifamtinsley.com 60 Programmable Multi-function Relay Issue 1.0
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