MRI MACHINE ELECTRICAL PANEL
RuncoN MRI Machine Electrical Panel is a critical component in the power and control infrastructure for Magnetic Resonance Imaging (MRI) systems. It ensures safe, stable, and filtered electrical power to the MRI and its supporting subsystems.
Purpose
- Power Distribution: Supplies electrical power to the MRI magnet, gradient amplifiers, RF amplifiers, chiller, and console.
- Protection: Includes breakers and surge protection to safeguard sensitive electronics.
- Isolation: Reduces electrical noise and ensures patient safety using isolation transformers and filters.
- Control: Interfaces with facility systems for Emergency Power-Off (EPO), HVAC interlocks, and system monitoring.
Typical Power Requirements
| MRI Type | Main Power | Frequency | Notes |
|---|
| 1.5 Tesla | ~100–150 kVA | 50/60 Hz | 3-phase |
| 3.0 Tesla | ~150–200+ kVA | 50/60 Hz | 3-phase, dedicated subsystems |
| Dedicated Subsystems | 5–50 kVA | 50/60 Hz | For gradient, RF, cryocooler, etc. |
Note: Voltage and frequency depend on the local grid (e.g., 400/230V 50Hz or 480/277V 60Hz).
Main Components
| Component | Description |
|---|
| Main Breaker / Disconnect | Isolates MRI system from facility power. |
| Surge Protection Devices (SPD) | Protects against voltage spikes. |
| Isolation Transformer | Provides electrical isolation and reduces interference. |
| Power Line Filters (EMI/RFI) | Filters electrical noise to prevent image artifacts. |
| Circuit Breakers and Contactors | Protect individual subsystems (gradient, RF, chiller, etc.). |
| Emergency Power Off (EPO) | Shuts down MRI system safely in emergencies. |
| Grounding and Bonding System | Ensures patient and equipment safety; minimizes noise. |
| Monitoring Devices | For voltage, current, temperature, and alarms. |
Design Considerations
- Dedicated Power Feed: MRI must be on an isolated, dedicated circuit.
- Stable Power Quality: Voltage fluctuations or harmonics can cause image distortion.
- Proper Grounding: Separate RF ground from building ground to prevent interference.
- Shielded Cabling: Power and signal lines are shielded to avoid electromagnetic interference.
- Environmental Control: Electrical panels are installed in the Equipment Room, separate from the MRI Scan Room due to magnetic field and RF shielding requirements.
