Overview
The AIM-M10 is a dedicated insulation monitoring device designed for medical IT systems in operating rooms, ICUs, and other critical care areas. It continuously monitors the insulation resistance, load current, and transformer temperature of isolated power systems, ensuring electrical safety and uninterrupted power supply in medical facilities. With real time fault indication and RS485 Modbus communication, it integrates seamlessly into hospital power distribution networks.
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Insulation Monitoring
- Range: 15-999kΩ
- Alarm: 50-999kΩ adj.
- Response: ≤3s
- Voltage: ≤13V
Current & Temp Monitoring
- Current: 2.1-60A, ±5%
- Temp: -50-+200℃, Pt100
- Alarm: 5-80A / 0-200℃
- Leakage capacitance ≤5μF
Fault Location & Alarm
- Injects location signal
- 2 relay outputs, 250V/3A
- Detects wire breaks (LL/FK/TC/CT)
- LED + LCD indication
Dual Comms & Logging
- RS485 Modbus-RTU
- CAN bus (custom protocol)
- 20 event records
- DC 24V supply, ≤6W
Function
| Insulation Monitoring | Measures insulation resistance (15-999kΩ) with adjustable alarm threshold (50-999kΩ). Response time ≤3s, test voltage ≤13V, current ≤50μA. |
| Load Current Monitoring | Monitors current from 2.1A to 60A (accuracy ±5%), alarm set 5-80A adjustable. |
| Transformer Temperature Monitoring | Uses two Pt100 sensors, range -50℃ to +200℃, alarm 0-200℃ adjustable. |
| Fault Location | Injects a location signal (≤12V, ≤1mA peak) into the IT system when insulation fault occurs; works with AIL series locators to pinpoint the faulty circuit. |
| Alarm Outputs | Two independent relay outputs (AC250V/3A, DC30V/3A) for over-temperature, overload, insulation, or system faults. |
| Wire Break Detection | Continuously monitors L1/L2, FE/KE, TC, and CT connections; gives alarm within 2s on disconnection. |
| Communication | RS485 interface with Modbus-RTU protocol for BMS/SCADA integration; CAN interface for communication with AIL locators and AID series display units. |
| Event Logging | Stores up to 20 fault events with time stamps for later analysis. |
| Self–diagnosis | Built-in self-test verifies proper operation of monitoring circuits. |
Specification
| Parameter | Value |
| Model | AIM-M300 |
| Auxiliary Power | DC 18-36V, ≤6W |
| Insulation Resistance Range | 15-999kΩ |
| Insulation Alarm Range | 50-999kΩ adjustable |
| Response Time | ≤3s |
| Measuring Voltage | ≤13V |
| Measuring Current | ≤50μA |
| Internal Resistance Ri | ≥240kΩ |
| System Leakage Capacitance | ≤5μF |
| Current Measurement Range | 2.1-60A |
| Current Accuracy | ±5% |
| Current Alarm Range | 5-80A adjustable |
| Temperature Sensor | 2 × Pt100 |
| Temperature Range | -50-+200℃ |
| Temperature Alarm Range | 0-+200℃ adjustable |
| Location Signal Voltage | ≤12V |
| Location Signal Current | ≤1mA (peak) |
| Alarm Output | 2 relays, AC250V/3A, DC30V/3A |
| Communication | RS485 (Modbus-RTU), CAN (custom) |
| Event Records | 20 |
| Operating Temperature | -10-+55℃ |
| Storage / Transport Temperature | -25-+70℃ |
| Relative Humidity | <95% non-condensing |
| Altitude | <2500m |
| Mounting | DIN rail |
| Display | LCD + LED |
| Protection Degree | IP40 |
| Rated Impulse Voltage / Pollution | 4kV / III |
| EMC Compliance | IEC 61326-2-4 |
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FAQ
Up to 16 AIM-M300 units can be monitored by a single AID150 (via RS485) or AID200 (via CAN). The system number must be set accordingly.
“FK” indicates FE/KE terminal disconnection (ground wire). “LL” indicates L1/L2 disconnection (system power lines). Both trigger an insulation alarm and need immediate wiring check.
Yes, when used with AIL series fault locators (AIL150-4/8 or AIL160-6) and proper wiring, it injects a locating signal and displays the faulty branch number on the AIM-M300 screen.
According to transformer capacity: 10kVA → 45A, 8kVA → 35A, 6.3kVA → 28A, 5kVA → 22.5A, 3.15kVA → 14A. Enter the AIM-M300 menu and adjust the “load current alarm” parameter.
The factory default password is 0001. It can be changed via the “Other Settings” menu.
Summary
The AIM-M300 medical intelligent insulation monitor delivers comprehensive protection for IT power systems in critical medical areas. Combining insulation, current, and temperature monitoring with active fault location, it helps operators quickly detect and pinpoint ground faults, preventing power interruptions and ensuring patient safety. Dual communication interfaces allow seamless integration with building management systems and remote displays. With its robust design, extensive self-diagnostics, and event logging, the AIM-M300 is the ideal choice for new hospital constructions or upgrades of existing medical facilities.
