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Accessories to allow rapid creation of powerful MEprotect-based protection systems

Comprehensive set of optional accessories to complement the power of MEprotect relays for designing and building cost-effective, reliable and high-quality electrical asset protection applications.

Relay expansion modules

Extend the power of the relay with:
- Additional digital IO (8x DIN, 4x Relay DOT)
- RTD sensors (4ch. or 8ch. modules) - PT100, PT1000, NTC, or PTC
- 4-20mA IO (2x AIN, 2x AOT) incl. PID control blocks
- Ethernet expansion module (Modbus TCP, Profinet)

Relay expansion modules

CT module blocks (with voltage sensing up to 550Vac)

Select the appropriate CT module block for the application (0.1A to 300A models available).

Note: for larger currents - or for MV applications - use external CTs and VTs with model MEP0400 interposing module block.

CT module blocks (with voltage sensing up to 550Vac)

Core balance CTs

MEprotect offers core balance CTs (CBCT) in various ratings and cable-window geometries/sizes.

Alternatively, user-supplied CBCTs with 1A secondary current can be used with MEprotect relays.

Core balance CTs

HMIs / Graphical Operator Terminals

MEprotect can work completely autonomously without any HMI. If local access is needed for operating equipment (on/off); for monitoring live equipment status: or making setting changes, two HMIs are offered:
- 7" full TFT colour touch screen or
- 3.8" greyscale touchscreen with 4 backlight colours representing relay status
The HMI can be mounted up to 100m (Ethernet cable) or 1000m (RS485 cable) distance from its MEprotect relay.

HMIs / Graphical Operator Terminals

Other accessories

- External memory module (for storing MEprotect relay's configuration, allowing one-step relay programming, e.g. after replacement)
- LV Insulation lockout module, used to prevent the closure of main contactor onto an earth fault
- LV Voltage converter module - used when measuring phase voltage >550Vac (max. = 1050Vac)

Other accessories

Visit our Smart Manufacturing Solutions – Visit us at stand P03 to learn about our Smart Manufacturing Solutions at the National Manufacturing Exhibition in Citywest Dublin 29 & 30th January 2020.
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