The medical IT system is mainly used in important Class 2 medical locations such as operating room, ICU/CCU intensive care unit, providing safe, reliable and continuous power distribution for the important equipment at these locations. Medical insulation monitoring and fault locating device is developed by the many years’ design experience of the Acrel Electric in electric power meter industry, according to the special requirements of the insulation monitoring and fault locating of the power distribution system in Class 2 medical locations. The products can realize the real-time monitoring of insulation, load and temperature of isolation transformer in IT system, and have the functions of system insulation fault loop positioning and centralized monitoring by multiple pieces of systems. Products conform to the provisions of enterprise standard Q31/0114000129C013-2016 IT System Insulation Monitoring Instrument.Medical IT system insulation monitoring and fault locating products (seven-piece set) include AITR series
medical isolation transformer, AIM-M200 medical intelligent insulation monitoring instrument, AKH-0.66P26 current transformer, AIL100-4/AIL100-8 insulation fault locator, ASG100 test signal generator, DR-60-24 power module and AID200 centralized alarm and display instrument, which are shown in Table 1.
2 Function features
Function features of AITR series medical isolation transformer
The transformation ratio between the primary and secondary windings is 1:1;
Double insulation treatment is adopted between the windings, and the electrostatic shielding layer is designed.
The PT100 temperature sensor is installed in each wire packet to monitor the temperature of the isolation
transformer;
Used for the transformation of TN system into IT system (ungrounded system) after isolation transformer.
4 Technical parameters
Technical parameters of AITR series medical isolation transformer
Table 2 Technical Parameters of AITR Series of Medical Isolation Transformer
5 Installation and wiring
5.1 Shape and mounting hole size
5.1.1 External dimensions of AITR series medical isolation transformer (unit: mm)
Shape structure and size of AITR series medical isolation transformer are shown as below and in Table 9 (unit: mm)
Table 9 External Dimensions of AITR Series Medical Isolation Transformer