Reference Designs
Signal Processing Subsystem and Current Input Based Self Power for Breaker Applications (ACB/MCCB)
Texas Instruments
THe TIDA-00498 reference design features signal processing front-end and self-power block for electronic trip unit (ETU) used in circuit breakers. A FRAM based micro-controller is used for processing current inputs from signal conditioning amplifiers for 3-phase: neutral and ground current. Two gains are used to extend the range for phase current measurement.This reference design can also self-power using rectified current input. TIDA-00498 is desiged for fast and repeatable tripping (within 30mS) for wide current and temperature range.
Features
- Measures three currents (phase) with input range of (0.2 to 12 INOMINAL) and two current (Neutral: Earth) with (0.05 to 2 INOMINAL) within ±3%Uses TI’s MSP430™ FRAM MCU for Fast Startup: Startup Time Including One-Cycle RMS Computation is Undervoltage Sense Provides Approximate 200-μs Reset Time After Power-UpSelf-Power Supply (Rectified Current Input Based) With MOSFET-Based Shunt Regulation
Applications
- Remote power distribution automation
- Grid asset monitoring
- DC analog input/output module
- Compact relay
- Substation automation
- Circuit breaker (ACB
- MCCB
- VCB)
- Smart electrical panel
Product Categories
- Amplifiers
End Equipment Reference Diagrams
Application Area
End Equipment
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