AC/DCCurrent
CurrentTransducer
transducer DHR-C420
DHR-C5
AC/DC
Thetransducer
transducerfor
forthe
theelectronic
electronicmeasurement
measurementofofDC
DC&&distorted
distortedAC
AC
The
waveform
waveformcurrents,
currents,with
withgalvanic
galvanicisolation
isolationbetween
betweenthe
theprimary
primarycircuit
circuit
(power)
secondary
circuit
(measurement).
TrueTrue
RMSRMS
4-20 0-5V
mA
(power)and
andthe
the
secondary
circuit
(measurement).
current
output.
voltage output.
IPN
AA
IPN==100..1000
100 .. 1000
Electrical data
Primary
Nominal data
Primary AC Current
Electrical
C & AC Current Max. Peak Value 1)
D
Primary Nominal
Primary AC Current
DC
IPN &
(A.t.RMS)
IP (A)
AC Current
Max. Peak
Value (*)
I (A.t.RMS)
100
600
I
(A)
PN
P
200
600
100
600
300
1000
200
600
400
1000
300
1000
500 2)
1800
400
1000
500
1800
600 2)
1800
600
1800
1000 2)
1800
RL
VCR L
ICVC
ISLIC
ÎPVSL
ÎP
1000
Output current
1800
Output voltage
IOUT(Analog)
(mA DC)
4-20
V OUT
(VDC)
4-20
0-5
4-20
0-5
4-20
0-5
4-20
0-5
0-5
4-20
0-5
4-20
Load resistance
Load
resistance
Supply
voltage
Supply
voltage
Current
consumption
Current
Output
currentconsumption
limitation
Output
voltage (Ampere
limitation Turns)
(0-5V)
Overload
capability
Overload capability (Ampere Turns)
0-5
Type
Type
DHR 100 C420
DHR 200 C420
DHR 100 C5
DHR
300 C420
DHR 200 C5
DHR
400
DHR
300C420
C5
DHR
500
DHR
400C420
C5
DHR
500C420
C5
DHR
600
DHR
600
C5
DHR 1000 C420
DHR 1000 C5
< 300
W
10
kW
+ 20 .. ≥50
V DC
30 mA ++ 20
IOUT.. 50 V DC
mA
< 2530
mA
30000< 7
A.t V
30000
A.t
Performance data
Performance data
XX
Accuracy
@ IPN@
, TIA ,=T25°C
(excluding
offset)
Accuracy
= 25°C
(excluding
offset)
PN
A
eLε L Linearity
error
(1%
of
I
..
±
I
)
Linearity error (1%PNof IPN PN
.. ± IPN)
IOEV
Electrical
offsetoffset
current,
TA = 25°C
Electrical
voltage,
TA = 25°C
OE
TCI
Temperature
coefficient
of
IOEof
(V0..+60
°C) °C)
OE
TCV
Temperature
coefficient
( 0..+60
OE
OE
(-40..+70
°C) °C)
(-40..+70
TCI
Temperature
coefficient
of
I
(%
of
reading)
OUT
OUT
TCV
Temperature coefficient
of VOUT (% of reading)
OUT
trt
Response
time time
to 90to%90
of %
IPN of
step
Response
IPN step
r
BW
Frequency
bandwidth
(±
1
dB)
BW
Frequency bandwidth (±1dB)
< ± 1< ± 1 %%ofofIPNI
PN
< ± 1.0< ± 1.0%%ofofIPNI
PN
4< ± 1.0 % mA
of IPN
± 3.2± 2.0
mA/K
mV/K
± 6.4
mA/K
± 4.0
mV/K
± 0.1 ± 0.1
%/K
%/K
< 150< 150
ms
ms
DC 20..6000
Hz
DC 20..6000Hz
General
Generaldata
data
TAT A
TST S
mm
IPxx
IPxx
Ambient operating
operatingtemperature
temperature
Surrounding
Ambient
storage
temperature
Surrounding storage temperature
Mass
Mass
Protection
degree
Protection degree
- 40 .. +- 40
70.. + 70 °C°C
40
- 40 .. + 85.. + 85 °C°C
260260
gg
IP20
IP20
Notes : The
Max. Peak AC Current is the highest peak level of the primary Note : (*) The Max. Peak AC Current is the highest peak level of the primary signal that is
signal
that is taken into account for accurate True RMS calculation. Yet taken into account for accurate True RMS calculation. Yet the device is designed for
the
devicecontinuous
is designed
forRMS
maximum
continuous
True RMS
value
equal by
to the output
is limited
maximum
True
value equal
to I PN, whereas
the
above specified
outputislimitation.
IPN
, whereas
the output
limited by the above specified output limitation.
2)
According to the UL 508 Standard for Safety for Industrial Control Equipment the primary current must not exceed 475 A.t.RMS through the transducer hole.
1)
090413/18
080725/15
Features
• Features
VFD and SCR waveforms current
measurement
●● VFD and SCR waveforms current
• True
RMS output
measurement
• ●Panel
● Truemounting
RMS output
● 4-20 mA current
• ●Eliminates
insertionoutput
loss
● Panel plastic
mounting
• ●Isolated
case recognized
●● Eliminates
insertion loss
according
to UL94-V0
●● Isolated plastic case recognized
according to UL94-V0
Advantages
Advantages
• Large aperture for cable up to
●● Large aperture for cable up to
Ø32mm
Ø32mm
• High isolation between primary and
●● High isolation between primary
secondary
circuitscircuits
and secondary
•●
Easy
installation
● Easy installation
Applications
Applications
●● VFD Controlled Loads
• VFD
Controlled
Loads how the
VFD
output indicates
VFD
output
how are
the motor
motor
and indicates
attached load
and
attached load are operating.
operating.
• SCR
Controlled
Loads
●● SCR
Controlled
Loads
Acurate
Acuratemeasurement
measurementofof phase
phase
angle
fired
or
burst
fired
(time
angle fired or burst fired (time
proportioned)SCRs.
SCRs.Current
Current
proportioned)
measurement
gives
faster
measurement gives faster
response than temperature
response than temperature
measurement.
measurement.
●● Switching Power Supplies and
• Switching
Power
Supplies and
Electronic
Ballasts
Electronic
Ballasts
True RMS
sensing is the most
True
RMS way
sensing
is the most
accurate
to measure
power
supply
or
ballast
input
power.
accurate way to measure power
supply or ballast
input power.
Application
domain
●● Energy and Automation
Application
domain
• Energy and Automation
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
Page 1/4
Page 1/4
www.lem.com
www.lem.com
Current Transducer DHR-C420
Isolation characteristics
Vb
Vd
Vw
dCp
dCl
CTI
Rated isolation voltage rms 3)
300
V
according to the standard IEC 61010-1 and with the following conditions:
- Reinforced isolation
- Over voltage category CAT III
- Pollution degree PD2
- Heterogeneous field
Rms voltage for AC isolation test 4), 50 Hz, 1min
4.0
kV
Impulse withstand voltage 4), 1.2/50 uS
7.3 kV
Creepage distance
7.2
mm
Clearance distance
7.2
mm
Comparative tracking index (Group I)
> 600
Notes :3) Between primary conductor voltage and ground. If insulated cable is used for the primary circuit, the voltage category could be improved according to the insulation characteristics given by the cable manufacturer.
4)
Between primary (completely filling the aperture) and secondary.
Transfer characteristics
Output in mA
20
4
-Ipn
+Ipn
Page 2/4
090413/18
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
Current Transducer DHR-C420
Safety and warning notes
In order to guarantee safe operation of the transducer and to be able to make proper use of all features and functions,
please read these instructions thoroughly!
Safe operation can only be guaranteed if the transducer is used for the purpose it has been designed for and within the
limits of the technical specifications.
Ensure you get up-to-date technical information that can be found in the latest associated datasheet under www.lem.com.
Caution! Risk of danger
Ignoring the warnings can lead to serious injury and/or cause damage!
The electric measuring transducer may only be installed and put into operation by qualified personnel that have received an appropriate training.
The corresponding national regulations shall be observed during installation and operation of the transducer and any electrical conductor.
The transducer shall be used in electric/electronic equipment with respect to applicable standards and safety requirements and in accordance with all the related systems and components manufacturers’ operating instructions.
Caution! Risk of electrical shock
When operating the transducer, certain parts of the module may carry hazardous live voltage (e.g. primary conductor, power supply).
The user shall ensure to take all measures necessary to protect against electrical shock.
The transducer is a built-in device containing conducting parts that shall not be accessible after installation.
A protective enclosure or additional insulation barrier may be necessary.
The transducer shall not be put into operation if the jaw opening is open (split core version) or the installation is not completed.
Installation and maintenance shall be done with the main power supply disconnected except if there are no hazardous live parts in or in close proximity to the system and if the applicable national regulations are fully observed.
Safe and trouble-free operation of this transducer can only be guaranteed if transport, storage and installation are carried
out correctly and operation and maintenance are carried out with care.
Page 3/4
090413/18
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
DimensionsDHR-C5
DHR-C420
(in mm.
mm =
= 0.0394
inch)
Dimensions
(in mm.
1 1mm
0.0394
inch)
Dimensions DHR-C420 (in mm. 1 mm = 0.0394 inch)
25
70
60
25
70
40
10
10
8.30
25
15
22.28
6.80
8.30
15
25
6.80
6.80
22.28
40
32
6.80
70
4.
60
32
4.
60
70
60
4
2.50
90
15
4
25.6025.60
15
8.30
7
8.30
7
4.60
33.80
4.60
33.80
2.50
90
6
Plug in connector:
Plug in connector:
FKC2.5/4-ST-5.08
FKC2.5/4-ST-5.08
(Phoenix
Contact)
78
6
78
(Phoenix Contact)
DHR-C420
Connections
DHR
Connections
Connections
DHR
• Wires up to ∅ 2 mm
●● Wires
up toprovided
Ø 2 mm(spring terminal blocks)
• Female
connector
• Wires
up to
∅ 2 mm
●
●
Female
connector
provided (spring
terminal blocks)
• User-friendly
spring-cage
connection
for no-tool
• Female
connector
provided
(spring terminal
blocks)
●
●
User-friendly
spring-cage
connection
for no-tool direct
direct conductor
connection
• User-friendly
spring-cage
connection for no-tool direct conductor
conductor connection
connection
Output Connector
24 VDC Power
1(Vcc)
2(Iout) 3(NC) 4(GND)
Output
Connector
1(Vcc) 2(NC) 3(Vout) 4(GND)
Mechanical characteristics
24 VDC Power
Mechanical characteristics
(+)
●● General
tolerance
Mechanical
characteristics
• General tolerance
±1 mm
±1 mm
●● Primary aperture Ø 32.0 mm
• Primarytolerance
aperture
∅ 32.0
• General
±1 mm
mm4 holes Ø 4.6 mm
●● Panel mounting • Panel aperture
mounting
4 holes ∅ 4.6mm
mm
• Primary
●● Distance between holes ∅ 32.0 70.0
mm & 78 mm
• Distance
between holes
70 mm
& 78 mm
• Panel
mounting
4
holes
∅
4.6 mm
(see above dimensions)
(see above drawings)
• DistanceFor
between
holes
70.0 mm
& 78
mm
panel mounting,
replace
by(not
newsupplied)
one (not
For panel mounting,
replace M4
screwsM4
byscrews
new one
(see above
dimensions)
supplied)
with
appropriate
length
to
panel´s
thickness.
with appropriate length to panel´s thickness.
For panel mounting, replace M4 screws by new one (not supplied)
Remarks
with appropriate
length to panel´s thickness.
(+)
(-)
(-)
(-)
(-)
10k
Load(+)
(+)
(Controller,
Load meter etc)
(Controller, meter etc)
●● The temperature of the primary busbar can not exceed
Remarks
Ip
090413/18
080725/16
080725/15
90 °C.
Remarks
• The temperature of the primary conductor can not exceed 90 °C.
●● Dynamic performances are the best with a primary
• Dynamic performances are the best with a primary conductor
•
The
temperature
of the primary
can not
exceed 90 °C.
busbar completely
fillingbusbar
the primary
aperture.
+24VDC
completely filling the primary aperture.
●
●
This
is
a
standard
model.
For
different
versions
•
Dynamic
performances
are
the
best
with
a
primary
busbar
Is
• This is a standard model. For different versions (supply voltages,
(supply
voltages,
different
outputs, bidirectional
OUT
completely
filling
the
primary
aperture.
GND
different outputs, bidirectional measurement,...), please
please
contact
us.
• This
is a measurements...),
standard
model. For
different
versions
(supply voltages,
Page 4/4
contact
us.
GND
bidirectional
please
LEM reserves the right to carry out modifications on different
its transducers,outputs,
in order to improve
them, withoutmeasurements...),
prior notice.
Page 4/4
www.lem.com
us. in order to improve them, without prior notice.
LEM reserves the right to carry out modifications oncontact
its transducers,
www.lem.com
OUT
Ip
+24VDC
Is
Page 4/4
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com