Table of Contents
Advertisement
Quick Links
Earth Leakage Relay
ME-ELR-DD
Applications
•
Industrial equipment protection
•
Personnel protection from Earth Leakage
faults
•
Suitable for low voltage distribution
protection
Technical Data
Auxiliary Supply
ME-ELR-DD-110A
ME-ELR-DD-24A
Rated frequency
VA rating
Setting Ranges
Sensitivity adjustment
Delay time adjustment
Fault record
Storage
User Manual
Features
•
Adjustable sensitivity
•
Adjustable time delay
•
LED Status indicators
•
Leakage current indication
•
Remote test and reset switching
•
DIN rail mounting
•
Current measurement based on fundamental frequency, prevents nuisance tripping
•
Dial adjustment for ease of use
•
Robust casing protects the unit from external interference
•
Serial Number Tracked
Description
The ME-ELR-DD are microprocessors based earth leakage relays designed for measure the
low-level leakage or unbalanced currents due to insulation loss in conductors or equipment to be
protected. A zero phase current transformer is used to sense the leakage current. All conductors
of the circuit to be protected shall go through the ME-T.
For better fault preventive control of the system or equipment, ME-ELR-DD comes with a pre-
fault alarm contact and a positive safety contact. The pre-fault alarm contact is energized when-
ever the leakage current exceed 50% of the sensitivity setting, I n. The positive safety contact is
energized if the relay is power up and function correctly.
94 ~ 127 VAC
21 ~ 28 VDC
50Hz
3 VA typical
30mA, 50mA,
0.10A – 1.00A (Step = 50mA),
1.00A – 5.0A (Step = 1.00A)
0.05s - 0.5s (Step = 0.05s)
3 latest tripped fault currents
Non-volatile memory
MerCs Pty Ltd, 55 Pendlebury Rd, Cardiff, NSW, 2285, Australia | 2018 V1.1
02 4047 0777
02 4047 0788
Input
Remote reset
Outputs
Trip contact
Positive safety contact
Pre-fault alarm contact
Contact Specification
Contact arrangement
Contact material
Expected electrical life
Expected mechanical life
www.mercs.com.au
N.O. dry contact
5A / 250V AC1
5A / 250V AC1
5A / 250V AC1
3 latest tripped fault currents
Non-volatile memory
100,000 at rated current
5x10
operations
6
Advertisement
Table of Contents
Related Manuals for MerCs ME-ELR-DD
Summary of Contents for MerCs ME-ELR-DD
- Page 1 ME-T. protection For better fault preventive control of the system or equipment, ME-ELR-DD comes with a pre- fault alarm contact and a positive safety contact. The pre-fault alarm contact is energized when- ever the leakage current exceed 50% of the sensitivity setting, I n.
- Page 2 I△n. Time delay countdown started Delay time lapsed and relay tripped Scroll through setting Scroll through records Programming mode MerCs Pty Ltd, 55 Pendlebury Rd, Cardiff, NSW, 2285, Australia | 2020 V1.1 02 4047 0777 02 4047 0788 www.mercs.com.au...
- Page 3 To exit programming mode without saving the selected setting, press the “RESET” button once. MerCs Pty Ltd, 55 Pendlebury Rd, Cardiff, NSW, 2285, Australia | 2020 V1.1 02 4047 0777 02 4047 0788...
- Page 4 Remote Input The ME-ELR-DD built in one remote reset input. Tis digital input is to remotely reset the relay when tripped or afer fixing the ME-T connec- tion error. To reset the relay, make a connection between terminals 4 and 5 of the relay.
Need help?
Do you have a question about the ME-ELR-DD and is the answer not in the manual?
Questions and answers