Acrel AID120 User manual

076
Medical IT System Insulation Monitoring Devices
(Five-Piece Set)
Installation and Operation Manual V2.5
Acrel Co., Ltd.

Declaration
Please read this manual carefully before using this series of products, in which
the involved pictures, logos, symbols, etc. are all reserved by the Acrel Electric Co.,
Ltd. Personnel not inside the company shall not publicly reprint all or part of the
contents without written authorization.
Before using the IT system which is made up of this series of products, please read
the tips and precautions in this operation manual, and Acrel does not take
responsibility for personal injuries or economic losses caused by ignoring tips of this
manual;
Transformers and related insulation monitors are professional electrical equipment,
and any relevant operation needs to be carried out by specialized electrical technicians.
Acrel does not take responsibility for personal injuries or economic losses caused by
improper operations of non-professionals.
The contents of the manual will be continuously updated and revised, thus the products
functions in this manual may inevitably have a slight discrepancy with the real objects
during the continuous upgrading process. Users should give first place to the purchased
real products, and can search www. acrel.cn to downloads or through sales channels
to obtain the latest version of the manual.

Revision history
Number
of times
Revision
date
Versions after
revision
Reasons for revision
01
2016.1.20
V2.0
On the basis of the original insulation monitoring
products, the contents of all five pieces of
products are integrated to replace the
instructions of each sub-product.
02
2016.10.25
V2.1
Some errors have been fixed
03
2016.11.7
V2.2
The overview added "products conform to Enterprise
standards Q31/0114000129C013-2016 IT System
Insulation Monitoring Instrument” .
04
2020.4.1
V2.3
Remove discontinued models from the five-piece set
and make adjustments and updates where necessary
05
2020.6.11
V2.4
Added panel installation schematic for AID120/150
06
2020.8.14
V2.5
Correct errors and omissions, adjust the wording
Note:

contents
1 Introduction........................................................................................................................... 1
2 Function features................................................................................................................. 2
2.1 Function features of AITR series medical isolation transformer.......................2
2.2 Function features of AIM-M100.........................................................................................3
2.3 Function features of AID120/150.....................................................................................3
2.4 Function features of ACLP10-24.......................................................................................4
2.5 Function features of AKH-0.66P26 current transformer...........................................4
3.Reference standard............................................................................................................... 4
4 Technical parameters........................................................................................................... 4
4.1 Technical parameters of AITR series medical isolation transformer.................4
4.2 Technical parameters of AIM-M100 medical insulation monitor.............................6
4.3 Technical parameters of AID120/AID150.........................................................................7
4.4 Technical parameters of ACLP10-24.................................................................................7
4.5 Technical parameters of AKH-0.66P26 current transformer.....................................8
5Installation and wiring....................................................................................................... 8
5.1 Shape and mounting hole size...........................................................................................8
5.2 Installation method...........................................................................................................10
5.3 Wiring method........................................................................................................................13
5.4 Typical wiring diagram.....................................................................................................16
5.5 Considerations.....................................................................................................................17
6 Programming and application........................................................................................... 18
6.1 Panel description................................................................................................................18
6.2 LED indicator instructions.............................................................................................18
6.3 Button function descriptions..........................................................................................19
6.4 Button operation descriptions.......................................................................................20
7 Communication protocol..................................................................................................... 28
7.1 Modbus-RTU communication protocol...............................................................................28

7.2 Introduction to the function code...............................................................................28
7.3 AIM-M10 parameter address table....................................................................................30
8 Typical applications......................................................................................................... 32
8.1 Application of five-piece set of medical IT system insulation monitoring
products in operating room.....................................................................................................32
9 Power on and debugging instructions........................................................................... 33
9.1 Wiring check.........................................................................................................................33
9.2 Common faults and eliminations.....................................................................................34
9.3 Settings and debugging.....................................................................................................35

1
Medical IT System Insulation Monitoring Devices
1 Introduction
Medical IT systems are primarily used in critical medical 2 locations such as operating rooms,
ICU/CCU intensive care units to provide safe, reliable, and continuous distribution of critical
equipment in these locations. Medical insulation monitoring products are developed by Ankore
Electric according to the special requirements of insulation resistance of distribution system
in medical 2 type places with many years of design experience in the power meter industry. It can
be used for isolating power system in various operating rooms and intensive care units in medical
places, realizing real-time monitoring of system insulation, load, isolation transformer
temperature and other operating conditions, as well as remote monitoring. Products comply with
the enterprise standard Q31/0114000129C013-2016 IT System Insulation Monitor provisions.
Insulation monitoring products of medical IT system (five-piece set) include AITR series
medical isolation transformer, AIM-M100 medical intelligent insulation monitor, AKH-0.66P26
current transformer, ACLP10-24 dc power module for instrument and AID series (AID120, AID150)
external alarm and display instrument, etc., as shown in Table 1.
Table 1 Medical IT System Insulation Monitoring Products
Type
Picture
Description
AITR series
medical isolation
transformer
AITR series isolation transformer is specially used
in medical IT system. The windings are treated with
double insulation and have electrostatic shielding
layer, which reduces electromagnetic interference
between windings. The PT100 temperature sensor is
installed in the wire bag to monitor the temperature
of transformer. The whole body is treated with vacuum
invasion paint, which increases mechanical strength
and corrosion resistance. The product has good
temperature rise performance and very low noise.
AIM-M100 medical
intelligent
insulation
monitoring
instrument
The AIM-M100 medical intelligent insulation monitor
is compact in size, easy to install, intelligent,
digital and networked, and is an ideal choice for
insulation monitoring of isolation power supply
systems in operating rooms, intensive care units and
other medical places.

2
AKH-0.66P26
current
transformer
The AKH-0.66P26 type current transformer is the
protective current transformer supporting the
AIM-M100 insulation monitor, of which the maximum
measurable current is 60A and the transformation
ratio is 2000:1. The current transformer is directly
fixed inside cabinet by screwing, and the secondary
side is leaded out by the terminal, which is
convenient to install and use.
ACLP10-24 dc power
module
Special DC module for instrument, stable output
voltage. The module adopts the standard guide way to
install, and can be installed on the same guide way
with the insulation monitor, easy to install.
AID
series
external
alarm and
display
instrume
nt
AID120
It is suitable for wall installation embedded in
operating room or nurse station and can monitor 1
AIM-M100 insulation monitor. It has sound and light
alarm function of insulation, overload,
overtemperature and equipment failure, digital tube
display and RS485 communication
AID150
LCD display, RS485 bus, centralized monitoring of up
to 16 SETS of AIM-M100 medical intelligent
insulation monitor data, sound and light alarm can
be remote. The AID150 can also monitor data from
multiple AIM-R100 residual current monitors.
2 Function features
2.1 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.

3
2.2 Function features of AIM-M100
Functions of real-time monitoring and fault alarming of the ground insulation resistance,
transformer load current and transformer winding temperature of the monitored IT system.
Can be used with insulation fault locator, remotely starting fault-locating and displaying
locating results when there are insulation faults.
Real-time monitor the line disconnection fault, temperature sensor disconnection fault
and the functional grounding line disconnection fault of the monitored system, and give the alarm
indication when the fault occurs.
Relay alarm output, LED alarm indication and other faults indication functions.
Two kinds of fieldbus communication technology, which are used for centralized alarm and
display instrument, test signal generator, insulation fault locator and upper computer management
software communications, and can monitor the operation status of IT system in real time.
With event recording function, it can record the time and fault type of the alarm, which
is convenient for operators to analyze the system operation status and eliminate the fault in time.

2.3 Function features of AID120/150
The insulation resistance alarm value, load current alarm value and transformer temperature
alarm value of the system can be set remotely.
When the system appears insulation fault, overload, transformer temperature over limit and
wiring fault, alarm and display instrument gives out the corresponding sound and light alarm,
and has the function of eliminating sound alarm.
Using advanced fieldbus technology, the remote monitoring function can be realized by real-time
data interaction with the insulation monitor.
Table 2 Functional Description of AID Series Products
Model
Selection Description
AID120
It can monitor one set of AIM-M100 insulation monitor and be used for installation
by embedding into wall. It can be applied to monitor operating room or ICU only using
single set of isolated power.
AID150
It can monitor 16 sets of AIM-M100 insulation monitoring instruments to the maximum
and AIM-R100 residual current monitor which can be used for installation by embedding
into wall. It is fit for the centralized monitoring on operating room or ICU or other
medical sites.

4
2.4 Function features of ACLP10-24
To employ isolated linear transformer with the characteristics of strong capacity of resisting
disturbance and small ripple etc.
AC 220V input, DC 24V output, with max output power of 3 W.
Used for the DC 24V power supply for AID series centralized alarm and display instrument and
other instruments.
2.5 Function features of AKH-0.66P26 current transformer
The maximum measurable current is 60A, and the transformation change ratio is 2000:1.
Work with the AIM-M100 insulation monitoring instrument to measure the load current of
isolation transformer.
3.Reference standard
◆IEC 60364-7-710: 2002 Building electrical installations section 7-710: Requirements for
special installations or locations----medical locations ;
◆IEC 61557-8-2014 Electrical safety of low voltage distribution system below AC 1000V and DC
1500V, Test, measurement or monitoring equipment for protection test section 8: Insulation
monitoring device for IT systems ;
◆IEC 61557-9-2014 Electrical safety of low voltage distribution system below AC 1000V and DC
1500V, Test, measurement or monitoring equipment for protection test section 9: insulation
fault positioning equipment for IT systems ;
◆JGJ 16-2008 Code for electrical design of civil buildings ;
◆IEC61558-1: 2009 Safety of power transformers, power supplies, reactors and similar products
section 1: General requirements and tests ;
◆IEC61558-2-15: 2011 Safety of power transformers, power supplies and similar products section
16: Special requirements for isolation transformers for power supply in medical locations .
4 Technical parameters
4.1 Technical parameters of AITR series medical isolation transformer
Refer to Table 3.
Table 3 Technical Parameters of AITR Series of Medical Isolation Transformer
Type
AITR10000
AITR8000
AITR6300
AITR5000
AITR3150
Insulation
class
H
H
H
H
H
Protection
class
IP00
IP00
IP00
IP00
IP00
Power / voltage

5
/ current
Rated power
10000VA
8000VA
6300VA
5000VA
3150VA
Rated frequency
50-60Hz
50-60Hz
50-60Hz
50-60Hz
50-60Hz
Rated input
voltage
AC230V
AC230V
AC230V
AC230V
AC230V
Rated input
current
45.3A
36A
28.5A
22.5
14.2A
Rated output
voltage
AC230V/115V
AC230V/115V
AC230V/115V
AC230V/115V
AC230V/115V
Rated output
current
43.5A
34.7A
27.4A
21.7
13.7A
Inrush current
<12In
<12In
<12In
<12In
<12In
Leakage current
<200μA
<200μA
<200μA
<200μA
<200μA
No load input
current
1.359A
1.08A
0.855A
0.675A
0.426A
No load output
voltage
235V±3%
235V±3%
235V±3%
235V±3%
235V±3%
Short circuit
voltage
<6.9V
<6.9V
<6.9V
<6.9V
<7.5V
General
parameters
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%
>96%
>96%
>96%
>95%
Maximum ambient
temperature
<40℃
<40℃
<40℃
<40℃
<40℃
No-load
temperature
rise
<36℃
<33℃
<31℃
<26℃
<22℃
Full load
temperature
rise
<65℃
<76℃
<67℃
<62℃
<55℃
Noise grade
<40dB
<40dB
<40dB
<40dB
<40dB

6
4.2 Technical parameters of AIM-M100 medical insulation monitor
Refer to Table 4.
Table 4 Technical Parameters of AIM-M100 Medical Intelligent Insulation Monitoring
Auxiliary
power
supply
Voltage
AC220V
(fluctuati
ng range±
10%)
Temper
ature
measur
ement
Thermistor
PT100
Frequency
50/60Hz
Measuring range
-50—+200℃
Maximum
power
consumpti
on
<8W
Alarm value
scope
0—+200℃
Insulatio
n
monitorin
g
Measuring
range of
insulatio
n
resistanc
e
10-999kΩ
Alarm
output
Output mode
2-route relay
output(programmable)
Absolute
percentag
e error
0—±10%
Contact
capacity
AC 250V/3A DC 30V/3A
Alarm
value
scope
50—999kΩ
Envir
onment
Operating
temperature
-10—+55℃
Response
time
<2s
Storage
temperature
-20—+70℃
Measuring
voltage
<12V
Relative
humidity
5%-95%, non-condensate
Measuring
current
<50uA
Altitude
≤2500m
Load
current
Measuring
range
2.1-50A
Communication
RS485 interface,
Modbus-RTU
agreement

7
Alarm
value
scope
5-50A
Rated impulse
voltage/pollution
degree
4KV/Ⅲ
Measuring
accuracy
≤±5%
EMC electromagnetic
compatibility/electrom
agnetic radiation
Conform to IEC 61326-2-4
4.3 Technical parameters of AID120/AID150
Refer to Table 5.
Table 5 Technical parameters of AID120/150
Parameter Type
AID120
AID150
Auxiliary power
supply
Voltage
DC 24V
Consumption
< 0.6W
Display range of insulation
resistance
0—999kΩ
——
Insulation alarming range
50—999kΩ
——
Transformer load rate display
Percentage display
——
Load current alarm setting
14A、18A、22A、28A、35A、45A
Temperature alarm setting range
0~+200℃
Alarm method
Sound-light alarm
Alarm type
Insulation failure, overload, overheat, equipment
failure
Communication mode
RS485，MODBUS-RTU
Display mode
Digital display
128×64 LCD display
4.4 Technical parameters of ACLP10-24
Refer to Table 6.
Table 6 Technical parameters of ACLP10-24
Input voltage
AC 220V(fluctuating range±10%)
Frequency
50/60Hz
Power
3W
Output voltage
DC 24V±5%
Voltage regulation factor
≤30%
Temperature rise
≤20℃
Dielectric intensity
4000V AC/minute

8
4.5 Technical parameters of AKH-0.66P26 current transformer
Refer to Table 7.
Table 7 Technical Parameters of AKH-0.66P26 Current Transformer
Input current
0.5mA～50A
Frequency
range
0.02-10 kHZ
Output current
0.025～25 mA
Loading
resistance
<200Ω
Temperature
coefficient
100 ppm/℃
Transient
current (1s)
200A
Phase
displacement
10
Installation
Fixed with 4×10 screws
Operating
temperature
-35～+70℃
Secondary
wiring
Single core >0.75mm2, Maximum
length of 1 meter
Storage
temperature
-40～+75℃
Single core twisted pair,
0.75mm2,Maximum length of 10
meters
Secondary
resistance range
95～120Ω
Isolation
pressure
5000Vac
Accuracy
0.5%
Linearity
0.5%
5Installation 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)
External dimensions of AITR series medical isolation transformer

9
Table 9 External Dimensions of AITR Series Medical Isolation Transformer
Type
Capacity (VA)
A(mm)
B(mm)
C(mm)
D(mm)
E(mm)
F(mm)
Total weight
(kg) (mm) (mm)
(kg)
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
5.1.2 External dimensions of AIM-M100 medical insulation monitor (unit: mm)
1 2 345 6 78 9 10 1112
13 14 15 16 17 18 19 20 2122 23 24
Medical Intelligent Insulation Monitor On Overload
Insulation Overtemp
AIM-M100AIM-M100AIM-M100AIM-M100AIM-M100AIM-M100AIM-M100AIM-M100AIM-M100AIM-M100
Acrel
AIM-M100
Acrel
AIM-M100
Acrel
AIM-M100
Acrel
AIM-M100
Acrel
AIM-M100
Acrel
AIM-M100
Test Menu
Front view Side view
5.1.3 External dimensions of ACLP10-24（unit：mm）
Type:ACLP10-24
Input:AC 220±10% 50-60Hz
Output:DC 24V 0.125A
www.acrel.cn
Acrel
ACLP10-24 DC Power Supply
DC ON
1 2 34567
8 9 10 1112 13 14
Front view Side view
5.1.4 External dimensions of AID120/AID150（unit：mm）

10
Acrel
Insulation resistancekΩ
Transformer load rate%
On
Insulation
Overload
Overtemp
AID120
Test Mute
Menu
AID120 front view AID120 hole size
AID120 side view
Test
Mute
Menu
Acrel
On Comm
AID150
AID150 front view AID150 hole size AID150 side view
5.1.5 External dimensions of AKH-0.66P26 current transformer (unit: mm)
φ2.3
I
Front view Bottom view
5.2 Installation method
In addition to the AID series external alarm and display instrument, the five-piece insulation
monitoring products of medical IT system should be centrally installed in the distribution cabinet
(isolated power cabinet). The isolation transformer should be installed at the bottom of the
distribution cabinet, fixed with supporting bolts, and cooling fan should be installed. The
instrument and circuit breaker are mounted on the upper panel. If the isolation transformer is

11
installed separately, it should not be too far from the AIM-M100 insulation monitor. When the
AID120/150 external alarm and display instrument is used in the operating room, it can be embedded
in the wall and installed next to the information panel in the operating room for the convenience
of manual medical personnel. When AID150 is used in ICU/CCU and other intensive care units, it
should be installed in the hand nurse station for the nurses on duty to check, and the RS485
communication between each insulation monitoring instrument, AID centralized alarm and display
instrument under centralized monitoring should be connected hand in hand. The external wiring of
the AID series external display device includes two 24V power lines and one RS485 communication
line with 2-core shielded twisted pair. These three lines are drawn from the isolated power cabinet,
and pipelines should be reserved during construction.
5.2.1 Installation mode of AIM-M100 medical insulation monitor
AIM-M100 insulation monitor adopts the installation method of the guide rail, and the fixation
mode is the clip buckle type, as shown in the following figure:
5.2.2 Installation method of ACLP10-24 power module
ACLP10-24 power module is installed by guide rail and fixed by clip-on, which can also be
installed at the same guide rail as AIM-M100 monitoring instrument.
5.2.3 Installation mode of AID series alarm and display instrument
1) The shell of AID120/150 is the same. If you choose to embed the wall for installation, the
installation diagram is as follows (taking AID150 as an example):

12
1.Product shape 2.Size of wall
openings
3.Insert the shell
into the wall
5.Fixed LCD board
and Shell
4.Connect to the
LCD board through
the terminal
Attention：
As our products
are constantly
updated, this
drawing is for
reference only
until it has been
confirmed by the
relevant
personnel.
Acrel
Run Comm Error Alarm
AID150
TEST
MENU
During the decoration, firstly the AID120/150 shell should be embedded in the wall to be fixed
and be close to the knockouts of the pipeline, so that the wires (two power cords + a two-core
shielded twisted pair) can be drawn to the front cover, and then fix the cover on the shell with
screws.
2）If the AID120/150 external alarm and display instrument is installed by opening the cabinet
door, the installation diagram is as follows (taking AID150 as an example)
AID150 shape Separate the product
body from the cassette
Install the cassette on
the door panel
Hole size of door
panel
Screw Clasp
Fix the panel to
the cassette
Screw
Attention：
As our products
are constantly
updated, this
drawing is for
reference only
until it has
been confirmed
by the relevant
personnel.

13
5.3 Wiring method
5.3.1 Wiring mode of AITR series medical isolation transformer
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.11 and 12 terminals of AIM-M100 insulation monitoring instrument.
Figure 2 AITR series medical isolation transformer terminal blocks diagram
Note: The wirings of input and output terminals of the isolation transformer should select the
copper wires matching the line diameter based on the isolation transformer rated input and output
current (refer to tables in section 5.4). S terminal wiring can select 2×4mm2yellow-green wire.
The wiring of two ST terminals can select 2×1.5mm2shielded twisted pairs, and the wiring should
not be too long.
5.3.2 Wiring mode of AIM-M100
Upper row terminals: U1, U2 for the auxiliary power supply, and L1, L2 are connected to the monitored
IT system (which can be connected with U1 and U2 in parallel, and then connected to the two output
terminals of isolation transformer). I0, I1 for the current transformer signal input, and T0, T1
as the temperature sensor signal input.

14
Lower row terminals: FE,KE are respectively connected to the field equipotential grounding terminal
block, A1,B1 are the communication terminals with the upper computer, A2,B2 are the communication
terminals with the external alarm and display instrument, J1 is the over temperature alarm output
(used to control the cooling fan), and J2 is the output of the fault alarm relay.
Note:
1)
为用于CT二次侧短接的试验端子
注
：
is used for the test terminals of CT secondary side short connection.
2) Do not install the insulation monitor upside down during installation, so as to prevent the
auxiliary power supply of terminals 1 and 2 connected to the normally closed contacts 23 and 24
of the relay by mistake, which may cause the instrument to burn out after being powered on.
3)The wirings connecting the No.1 and 2 terminals of the insulation monitor can select 2×1.5mm2
copper wires, and the L1 and L2 terminals corresponding to the No.4 and 5 can select 2×1.5mm2copper
wires, and the FE and KE terminals corresponding to the No.13 and 14 can select 2×4mm2yellow-green
wires (grounding wires). J1, J2 relay output are the dry nodes, which need additional power supply
during the control of external load. For example, J1 controls AC 220V cooling fan, then the AC
220V power supply is needed, and the wiring line type should be determined according to the load
current.
4) 2×1.5mm2shielded twisted pair cable can be selected for current transformer signal line
corresponding to terminals 8 and 9, temperature signal line corresponding to terminals 11 and 12,
RS485 communication line corresponding to terminals 15 and 16, and RS485 communication line
corresponding to terminals 18 and 19. The COM port for communication does not need wiring
5.3.3 Wiring mode of AID120/150 centralized alarm and display instrument
A and B are connected with A2 and B2 in the lower terminal of AIM-M100. The terminals of the power
supply correspond to the positive pole and ground of the 24V DC power module respectively. The
wiring diagram is shown in the following figure.