The ABB RLDA 103 (order code: RK638005-BA) is a measurement unit module used in ABB protection and control systems, primarily associated with the REB 103 relay platform.
It is designed to handle precise signal acquisition and measurement processing within protection schemes, ensuring stable data input for relay decision-making. The RLDA 103 plays a key role in enabling accurate monitoring of electrical parameters in medium-voltage protection systems, supporting reliable operation of ABB legacy relay architectures.
This unit is typically found in ABB legacy protection panels where high-precision measurement integrity and system compatibility are required.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | RLDA 103 (RK638005-BA) |
| Device Type | Measurement Unit Module |
| System Compatibility | ABB REB 103 protection system |
| Function | Signal measurement and data acquisition |
| Application | Protection relay auxiliary measurement |
| Origin | Sweden |
| Operating Environment | Industrial electrical substations |
| Mounting Type | Rack / system-integrated module (REB platform) |
Physical Characteristics
| Item | Specification |
|---|---|
| Net Weight | Approx. 1.8 kg |
| Gross Weight | Approx. 1.8 kg |
| Dimensions | ~16 × 10 × 12 cm |
| Housing | Industrial electronic module casing |
| Installation | Plug-in module for REB 103 system |
Recommended Related Models
- ABB REB 103 – Protection relay system platform
- ABB REF542plus – Substation automation terminal
- ABB RET541 / RET543 – Transformer protection relays
- ABB REA 101 / REA 103 – Arc protection system modules
- ABB SPA-ZC series – Communication interface modules
Popular ABB Models
- ABB RLDA 103 – Measurement unit module for REB 103 systems
- ABB REB 103 – Legacy protection relay platform
- ABB REF615 – Modern feeder protection relay
- ABB RET670 – Transformer protection relay system
- ABB REL670 – Transmission line protection relay
