1.Overview
Although the local IT system is not mandatory for power supply in some hospitals, such as rescue rooms, delivery rooms and dialysis centers, the safety requirements of distribution system are still very high because of the particularity of the hospital. ACREL Medical Residual Current Monitoring Device is specially developed for leakage current monitoring in such places. It can monitor leakage current at micro-ampere level, thus providing more precise leakage safety monitoring and escorting the safe operation of electrical equipment in such places.
2.Introduction
Medical residual current monitoring products are mainly used to monitor the residual current status of the trunk and branch of TN-S distribution system in medical places. When the residual current exceeds the pre-set threshold (where the threshold is less than 30 mA for leakage protection current, usually 6-10 mA), the system sends an alarm signal to prompt the staff to deal with it in time so as to eliminate the potential safety hazards such as electrical fire, leakage and shock caused by insulation aging, break-line, etc., and to provide clean, safe and continuous power supply for the equipment. Medical residual current monitoring products mainly include AIM-R100 residual current monitor, AKH-0.66/L-20 residual current transformer, AID150 centralized alarm and display instrument and ACLP10-24 DC regulated power supply, etc.
2.1AIM-R100 Medical Residual Current Monitor
AIM-R100 Medical Residual Current Monitor adopts advanced micro-controller technology with high integration, compact size, convenient installation, intellectualization, digitalization and networking. It is the preferred product for residual current monitoring in medical group 1 and group 2.
Product Functions
1.Real-time monitoring and display of residual current in monitored TN-S system；
2.Real-time monitoring of residual current transformer connection short-circuit, break-line fault, and send out alarm signal when the fault occurs;
3.Relay alarm output, LED alarm indication and other fault indication functions;
4.Advanced fieldbus communication technology, communication with centralized alarm and display device, can real-time monitor and control the operation of the system；
5.With event recording function, it can record the time of alarm occurrence and the type of fault. It is convenient for operators to analyze the operation status of the system and eliminate the fault in time..
6.One-button self-checking function, through which the residual current detection function of the device is checked
7.With remote reset function, the residual current monitor can be reset remotely to eliminate alarm information.
Standard
1.GB 16895.24-2005/IEC 60364-7-710:2002 Electrical installations of buildings—Part 7-710：Requirements for special installations or locations—Medical locations
2.GB19214-2008/IEC62020：2003 Electrical accessories—Residual current monitors（RCM） for household and similar uses
3.JGJ 16-2008 Code for electrical design of civil buildings
Technical Parameters
Parameters | Values | |
Auxiliary Power Supply | Voltage | AC220V±10% |
Maximum power consumption | ≤3VA | |
Residual Current Monitoring | Loops | 12 |
measuring range | 0~5000mA | |
Setting range of alarm value | 6~1000mA | |
Frequency | 50Hz±5Hz | |
Alarm output | Output mode | 1 Relay |
contact rating | AC250V/3A DC30V/3A | |
Communication | interface | RS485 |
Protocol | Modbus-RTU | |
Average trouble-free working hours | ≥50000小时Hours | |
Overall and installation dimensions(unit：mm)
front view side view 35mm DIN-Rail Mounting
2.2Residual Current Transformer
AKH-0.66/L-20 Residual Current Transformer is a special residual current transformer matched with AIM-R100. It is used to monitor the residual current status of each circuit with a ratio of 2000:1. The installation of AKH-0.66/L-20 Residual Current Transformer uses screw to fix directly in the cabinet, and the secondary side is fed with lead, so it is easy to install and use.
Technical Parameters
Name | AKH0.66/L-20 |
Level | 0.2 |
Ratio | 2000:1 |
Rated current (secondary) | 50mA |
Secondary output of CT | Self-contained lead |
Overall and installation dimensions(unit：mm)
front view bottom view
2.3Intelligent Socket Box
AMIS series intelligent socket box is an intelligent product developed meticulously by ACREL with rich product design experience and strict reference to relevant standards. This product is mainly used for TN-S power supply system in medical places, biological laboratories and purification rooms. As wall socket boxes in these places, when the leakage of sockets or loads exceeds the standard, the socket box will send out alarm signals to remind the staff to check and deal with them in time so as to eliminate potential safety hazards such as personal shock and electrical fire caused by leakage, so as to provide safety and feasibility for the equipment.
AMIS100-J3
AMIS10-J4
Product Function
1.Leakage fault alarm function. It can monitor the leakage current of the main circuit of the socket box and several branch sockets in real time, monitor the leakage fault of the socket load, and send out alarm signal when the fault occurs.
2.Equipment failure alarm function. Equipped with equipment running normally and equipment system failure indicator lamp, indicating the working state of the system.
3.Fieldbus communication technology. The socket box has a RS485 communication interface based on Modbus-RTU protocol, which supports networking and communication with external alarm and display devices. It can monitor the operation status of multiple sets of intelligent socket boxes through external alarm and display devices in real time.
4.Acousto-optic alarm function. When the fault occurs, various alarm modes are provided, such as sound alarm, LED alarm and so on. The sound alarm can be eliminated manually by pressing the muffler button, and the sound alarm function can also be turned off (3 seconds to the alarm sound for a long time, that is to say, the function can be turned off), while the LED alarm can not be artificially cancelled until the fault is removed.
5.Power failure alarm function. The AMIS 100-J3/B intelligent socket box also has built-in battery module. When the socket box loses power, the monitoring system can still send an alarm signal indicating that the socket box has been cut off.
Standard
1.GB19214-2008/IEC62020：2003 Electrical accessories—Residual current monitors（RCM） for household and similar uses
2.JGJ 16-2008 Code for electrical design of civil buildings
3.GB50333-2013 Architectural technical code for hospital clean operating department
Technical Parameters
Parameters | AMIS100-J3/B | AMIS100-J3 | AMIS10-J4 | ||
AUX POWER | voltage | AC220V | |||
Power consumption | 10W | ||||
Residual current monitoring | Loop Number | 4 (1 main, 3 branches) | 5 (1 main, 4 branches) | ||
Measurement range | 0-1000mA | ||||
Alarm value | 6-1000mA(Default is 10mA) | ||||
Measurement accuracy | ±5% | ||||
Alarm output | 4-way acousto-optic warning instructions (and the sound can be eliminated, can be turned off) | 4-way acousto-optic warning instructions (and the sound can be eliminated, can be turned off) | |||
Communication | 1 RS485，Modbus-RTU | ||||
Dimension | 500(W)×300(H)×170(D)(mm) | 575(W)×155(H)×96(D)(mm) | |||
Other functions | Fault record, power failure detection, power failure alarm and power failure record | Fault record | |||
Containment module | Monitoring module, fire power supply, battery, residual current transformer, socket | Monitoring module, residual current transformer, socket | |||
Overall and installation dimensions(unit：mm)
AMIS100-J3 Front View AMIS100-J3 Side View AMIS100-J3 Panel Hole Size
AMIS10-J4 Front View AMIS10-J4 Side View AMIS10-J4 Panel Hole Size
3.Application Schemes
3.1Design of Residual Current Monitoring in operating room
3.2Connection Diagram of Medical Residual Current Monitor
3.3Design of Intelligent Socket Box
