MET148-2

Configured for temperature signal acquisition in Sepam protection relay platforms, the Schneider Electric 59641 (MET148-2 Temperature Sensor Module) provides direct physical measurement interface for RTD inputs.

Hardware Specifications

Parameter	Specification
Model	59641 / MET148-2
Brand	Schneider Electric
Weight	0.2 kg
Dimensions	88 mm x 144 mm x 30 mm
Operating Temp	-25 to 70 deg C
Module Type	Temperature Sensor Module
Compatible Series	Sepam series 20, Sepam series 40, Sepam series 60, Sepam series 80, Sepam series 80 NPP
Measurement Type	Temperature
Number of Inputs	8 temperature inputs
Supported Sensors	Ni 100, Ni 120, Pt 100 RTD sensors
Mounting Type	Fixed mounting on symmetrical DIN rail
Maximum Sensor Distance	1 km
RTD Terminal Connection	Screw connector, 0.2 to 2.5 mm2 wire
Ground Terminal Connection	Screw connector, 6 to 100 mm2 tinned copper stranded cable

RTD Signal Acquisition and Protection Relay Integration

The MET148-2 module processes resistance temperature detector (RTD) signals from Ni 100, Ni 120, and Pt 100 sensors and transfers temperature measurement data to compatible Sepam protection relay systems. The module supports up to 8 temperature measurement channels and provides separated field wiring terminals for RTD connection.

The module includes channel measurement capability for thermal monitoring functions within Sepam series 20, 40, 60, 80, and 80 NPP relay configurations. The RTD input interface is designed for direct sensor connection with defined cable routing and grounding requirements.

Frequently Asked Questions

Q: How many temperature sensors can the MET148-2 module connect simultaneously?
A: The MET148-2 module provides 8 temperature measurement inputs for RTD sensors including Ni 100, Ni 120, and Pt 100 types.

Q: What is the maximum distance between the temperature sensor and MET148-2 module?
A: The specified maximum distance between the RTD sensor and module is 1 km.

Q: Which mounting method is specified for the MET148-2 module?
A: The module is designed for fixed mounting on a symmetrical DIN rail.

Field Installation Guidelines

Install the MET148-2 module on a symmetrical DIN rail and maintain separation between RTD signal wiring and high-current power conductors to reduce electromagnetic interference.

Connect RTD cables according to the specified terminal requirements and ensure the grounding terminal uses the correct conductor type. Apply proper cable shielding and grounding practices when installing in environments with electrical noise sources.

Verify sensor polarity, wiring continuity, and insulation condition before connecting the module to the Sepam relay system. Confirm the RTD cable routing remains within the specified maximum sensor distance.

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