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Hospital Grade Isolation Transformers for Ground Fault Location in Ungrounded System
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Meo wig Trading Co., Ltd
China - Hangzhou
Manufacturer
Trade Capacity
Export Percentage
Nearest Port
Hangzhou,Shanghai
Accepted Delivery Terms
Employees
51-100 people
Accepted Payment Currency
USD,CNY
Average Lead Time
45 Day(s)
Certifications
BRC
Product Specifications
--Product Description
ACREL AITR series Hospital Grade Isolation Transformers for Ground Fault Location in Ungrounded System
Features
● Capacity: 3.15, 5, 6.3, 8, 10 KVA
● Noise Level: <40dB
● Insulation Class: H
● Short Circuit Voltage ≤ 3%
● No-load Output Current ≤ 3%
● Inrush Current ≤ 12 In
● Leakage Current <0.2mA
● Efficiency >96%
● Noise Level: <40dB
● Insulation Class: H
● Short Circuit Voltage ≤ 3%
● No-load Output Current ≤ 3%
● Inrush Current ≤ 12 In
● Leakage Current <0.2mA
● Efficiency >96%
Standard
◆ IEC 61558-1:2009 Safety of transformers, reactors, power supply units and combinations thereof—Part 1: General requirements and tests
◆ IEC 61558-2-15:2011 Safety of transformers, reactors, power supply units and combinations thereof—Part 16: Particular requirements and tests for isolating transformers for the supply of medical locations
◆ IEC60364-7-710:2016 Electrical installations of buildings—Part 7-710：Requirements for special installations or locations—Medical locations
Technical Parameters
Rated Capacity | 3.15kVA/5kVA/6.3kVA/8kVA/10kVA |
Frequency | 50/60Hz |
Rated input voltage | 230V |
The output voltage | 230V/115V |
Inrush current | <12In |
Leakage Current | <200uA |
No-load output voltage | <235V |
No-load output current | <3% In |
Short-circuit voltage | <3% Un |
Efficiency | >96% |
Maximum ambient temperature | <40℃ |
No-load temperature rise | <33℃ |
Full load temperature rise | <76℃ |
Withstand voltage | 4200V/Min |
Insulation Class | H |
Noise Level | <40dB (A) |
Dimensions and Model Selection
Model | Capacity(VA) | Dimensions(mm) | Weight（Kg） | ||||||||||
A | B | C | D | E | F | ||||||||
AITR10000 | 10000 | 280 | 275 | 427 | 240 | 190 | φ11 | 92 | |||||
AITR8000 | 8000 | 280 | 265 | 427 | 240 | 190 | φ11 | 90 | |||||
AITR6300 | 6300 | 280 | 255 | 427 | 240 | 175 | φ11 | 75 | |||||
AITR5000 | 5000 | 280 | 255 | 427 | 240 | 175 | φ11 | 73 | |||||
AITR3150 | 3150 | 280 | 225 | 427 | 240 | 175 | φ11 | 53 | |||||
Name Rule
Comparison
Type | AITR10000 | AITR8000 | AITR6300 | AITR5000 | AITR3150 | ||||
Rated power | 10000VA | 8000VA | 6300VA | 5000VA | 3150VA | ||||
Insulation class | H | H | H | H | H | ||||
Protection class | IP00 | ||||||||
Rated frequency | 50-60Hz | ||||||||
Rated input voltage | AC230V | ||||||||
Rated input current | 45.3A | 36A | 28.5A | 22.5A | 14.2A | ||||
Rated output voltage | AC230V/115V | ||||||||
Rated output current | 43.5A | 34.7A | 27.4A | 21.7A | 13.7A | ||||
Inrush current | <12In | ||||||||
Leakage current | <200μA | ||||||||
No load input current | 1.359A | 1.08A | 0.855A | 0.675A | 0.426A | ||||
No load output voltage | 235V±3% | ||||||||
Short circuit voltage | <6.9V | <7.5V | |||||||
General parameters | ||||||||||
Type | AITR10000 | AITR8000 | AITR6300 | AITR5000 | AITR3150 | |||||
Fuse wire | 80A | 63A | 50A | 35A | 25A | |||||
Primary winding resistance | <55mΩ | <64mΩ | <80mΩ | <131 mΩ | <245mΩ | |||||
Secondary winding resistance | <45mΩ | <64mΩ | <80mΩ | <116 mΩ | <228mΩ | |||||
Iron loss | <150W | <105W | <107W | <77W | <55W | |||||
Copper loss | <230W | <200W | <170W | <125W | <120W | |||||
Efficiency | >96% | >95% | ||||||||
Maximum ambient temperature | <40℃ | |||||||||
No-load temperature rise | <36℃ | <33℃ | <31℃ | <26℃ | <22℃ | |||||
Full load temperature rise | <65℃ | <76℃ | <67℃ | <62℃ | <55℃ | |||||
Noise grade | <40dB | |||||||||
Selection Description
Any isolation transformer will generate inrush current at start time ,Therefore, for the medical IT systems , In selecting the circuit breaker which is installed in the line circuit into an isolation transformer , Breaker has short-circuit protection and without overload protection, such as ordinary breaker should be selected in line of C, D circuit breaker tripping curves, And the rated current should be determined according to the following relationship with isolation transformer capacity: 10kVA-63A, 8kVA-50A,
6.3/5kVA-40A, 3.15kVA-20A, to prevent the impact of the current circuit breaker switching difficulties or safety-power tripping, resulting in serious medical malpractice .
6.3/5kVA-40A, 3.15kVA-20A, to prevent the impact of the current circuit breaker switching difficulties or safety-power tripping, resulting in serious medical malpractice .
Wiring Diagram and Terminals
The isolation transformer is installed in the bottom of the distribution cabinet fixed with matching bolts, and the cooling fan should be installed. If the isolation transformer is installed separately, it is not suitable to put it too far away from the AIM-M200 insulation monitor.
The input terminals at the transformer terminal blocks are labeled with “PM”, in which two terminals 0 and 230 are connected to the input 220V single-phase AC. The output terminals are labeled with “SEC”, in which the output voltage of two terminals 0 and 230 is AC 220V and is connected to external field load. The S terminal is connected to the PE bus bar on the spot (or the equipotential terminal line). Two ST terminals are temperature sensor interfaces, which are respectively connected to the No.13 and 14 terminals of AIM-M200 insulation monitoring instrument.
Note:
1) The S terminal wiring can select 2×4mm2 yellow-green wire. The wiring of two ST terminals can select 2×1.5mm2 shielded twisted pairs, and the wiring should not be too long.
2) The connection line diameter of the input and output of the isolation transformer should match the rated current of the isolation transformer, or it can be selected according to the following table:
Isolation transformer type | Selected line diameter |
AITR3150 | 3×4mm2 |
AITR5000/AITR6300 | 3×6mm2 |
AITR8000/AITR10000 | 3×10mm2 |
3) Special reminder:
Any isolation transformer will have an impact current when it starts up, and too large impact current may cause the circuit breaker at primary side of the transformer difficult to disconnect or shut down. Therefore, for medical IT systems composed of medical isolation transformers and insulation monitoring products, in the selection of inlet circuit breaker of the isolation transformer, it is recommended to choose the circuit breakers only with short circuit protection but without overload protection according to GB requirements. If choosing the circuit breaker with overload protection, the circuit breaker should conform to the C and D tripping curves of GB14048.2-2008, and the rated current of the circuit breaker should be determined according to the capacity of the isolation transformer as follows: 10kVA-63A, 8kVA-50A, 6.3kVA-40A, 5kVA-40A, 3.15kVA-20A.
If the circuit breaker selection is not in accordance with the above requirements, the company shall not be liable for any medical malpractice caused by the closure difficulty of the circuit breaker or the disconnection of the circuit breaker during operation.
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