Related Manuals for Ampcontrol MEC-1
Summary of Contents for Ampcontrol MEC-1
- Page 1 MEC-1 – Earth Continuity Protection Relay User Manual Part Number: 167261 Revision: 1 – March 2020 Designed and manufactured in Australia by Ampcontrol CSM Pty Ltd...
- Page 2 Ampcontrol CSM Pty Ltd - ABN 35 000 770 141 ECDB006 MEC-1 User Manual Rev 1 – MARCH/2020 WARNING! This safety alert symbol identifies important safety messages in this manual and indicates a potential risk of injury or even death to personnel. When you see this symbol, be alert, your safety is involved, carefully read the message that follows, and inform other operators.
- Page 3 Rev 1 – MARCH/2020 Copyright Notice The Ampcontrol MEC-1 described in this document is the property of AMPCONTROL PTY LTD. It is furnished under a license agreement and is to be used only in accordance with the terms of the agreement.
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Page 4: Table Of Contents
Ampcontrol CSM Pty Ltd - ABN 35 000 770 141 ECDB006 MEC-1 User Manual Rev 1 – MARCH/2020 TABLE OF CONTENTS 1 SAFETY AND OTHER WARNINGS................5 1.1 Safe Use of Equipment ..................5 2 RECEIVING AND STORAGE ..................6 2.1 Receiving ....................... -
Page 5: Safety And Other Warnings
1.1.5 Operation As safety depends on the MEC-1 functioning correctly it is highly recommended that all safety functions of the MEC-1 be periodically tested to ensure correct operation. Page 5 of 18... -
Page 6: Receiving And Storage
Equipment that is found to be damaged or has been modified away from its published specification must not be used. Please contact Ampcontrol if the equipment is suspected to be different than that ordered or if it does not match the published specifications. -
Page 7: Installation
The MEC-1 as supplied has been designed and manufactured to comply with the requirements of protection standards. If modifications of any form are made to the MEC-1, the equipment may no longer be fit for use. If any modifications or damage to the MEC-1 is evident, do not use the equipment and contact Ampcontrol for advice. -
Page 8: Mec-1 Relay Overview
(shunt resistance), to ensure the integrity of the pilot-earth loop. If these tests fail the MEC-1 will trip, de-energising its output relay which can be used to switch a contactor, circuit breaker or for signalling. -
Page 9: Mechanical Arrangement
4.1.2 Mounting arrangement The MEC-1 enclosure is designed to be mounted on a standard 35mm DIN rail. The pilot and earth connections are located at the top of the enclosure and the power and user inputs and outputs are located at the bottom of the enclosure. -
Page 10: Electrical Connections
Rev 1 – MARCH/2020 4.2 Electrical Connections Once the MEC-1 relay has been mounted at a suitable location, it is necessary to wire it correctly. Figure 2 shows a typical wiring diagram for the application of the MEC-1 relay. N.O. USER... - Page 11 4.2.4 Reset - Optional This is an active high input that allows MEC-1 trips to be reset in latching mode, after the fault has been cleared. The reset input has no affect in non-latching mode.
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Page 12: Commissioning And Calibration
The series resistance measurement can be verified by installing a resistor which is a minimum of 3Ω above the selected trip level, or creating an open circuit, in series with the pilot conductor and verifying that the MEC-1 relay trips within the selected trip time and indicates an open circuit fault. -
Page 13: As/Nzs 2081 Protection Function: Earth Continuity
In a typical installation the MEC-1’s pilot terminal will be connected to the pilot conductor of a trailing or reeling cable. The load end of the pilot conductor will then be terminated with a diode to earth, creating a return path through the earth conductors of the cable to the main earth point of the outlet and then to the MEC-1’s earth terminals. -
Page 14: Remote Start
Latching mode can be selected via the DIP switches at the front panel. When a fault occurs in latching mode the trip will be latched, preventing the MEC-1 from starting (even if the fault is cleared), until a manual reset occurs. -
Page 15: Operation Summary
The user can select the trip time via one of the rotary switches at the front of the unit. The trip time represents the delay after which a trip condition has occurred when the MEC-1 relay will de-energise. The allowed settings for the trip time are 50ms, 100ms, 200ms, 300ms, 400ms, and 500ms. -
Page 16: Fault Indication
LEDs and returning the relay contacts to the default position. 7.5 Starting the MEC-1 When first powered, the MEC-1 will begin checking its internal circuitry as well as the pilot circuit. If no faults are detected within 1.7s the MEC-1 will be ready to start. -
Page 17: Service, Maintenance & Disposal
These ‘routine inspections’ must be carried out by suitably trained people with knowledge of the MEC-1 and the systems into which it is fitted. Routine inspections may take the form of either visual-only checks, or visual and ‘hands-on’... -
Page 18: Specifications
Ampcontrol CSM Pty Ltd - ABN 35 000 770 141 ECDB006 MEC-1 User Manual Rev 1 – MARCH/2020 9 SPECIFICATIONS Supply Voltage 24VAC/DC ± 20%, 5W Voltage -20°C ≤ Ta ≤ 65°C Temperature Range Relay Contacts 2 x NO / 1 x NC / 2 x COM Contacts 1A @ 110Vac –...
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