Specifications are subject to change without notice (25.01.06) 1
Monitoring Relays
AC Current Transformer
Types A 82-10, A 82-20
•5types of input: 0 - 25 AAC
0-50 AAC
0-100 AAC
0-250 AAC
0-500 AAC
• Output: A 82-10: 0 - 20 mADC (source)
A82-20: 4 - 20 mADC (sink)
• Easy interface to PLC or setpoint relays
Product Description
AC current metering trans-
former for 25, 50, 100, 250 or
500 AAC. Output current from
the transformer is 0-20 mADC
or 4-20 mADC in accordance
with IEC 60381-1. Can be
Type
Output
Input current
used with relays DIB01,
PIB01, DIC01, PIC01 or
S183 or directly connected
to a PLC. Power supply ON
is indicated by a green LED
on the side of the housing.
Ordering Key
Type Selection
Input current Output current Type no.
25 AAC 0 - 20 mA A82-10 25
50 AAC 0-20 mA A82-10 50
100 AAC 0 - 20 mA A82-10 100
250 AAC 0-20 mA A82-10 250
500 AAC 0-20 mA A82-10 500
25 AAC 4 - 20 mA A82-20 25
50 AAC 4-20 mA A82-20 50
100 AAC 4 - 20 mA A82-20 100
250 AAC 4 - 20 mA A82-20 250
500 AAC 4 - 20 mA A82-20 500
Input Specifications
A82-10/20 25 A 82-10/20 50 A 82-10/20 100 A 82-10/20 250 A 82-10/20 500
Current range 0-25 AAC 0 - 50 AAC 0 - 100 AAC 0 - 250 AAC 0 - 500 AAC
Max. current (continuously) 30 AAC 60 AAC 120 AAC 300 AAC 600 AAC
Max. overload current (t = 30 s)
250 AAC 300 AAC 700 AAC 1500 AAC 3000 AAC
Rated insulation voltage
Input - output 1000 VAC rms 1000 VAC rms 1000 VAC rms 1000 VAC rms 1000 VAC rms
Overvoltage category
IV
(IEC 60664)
IV
(IEC 60664)
IV
(IEC 60664)
IV
(IEC 60664)
IV
(IEC 60664)
Dielectric strength
Dielectric voltage 6 kVAC rms 6kVAC rms 6kVAC rms 6kVAC rms 6kVAC rms
Rated impulse withstand volt. 12 kV 12 kV 12 kV 12 kV 12 kV
(1.2/50 µs) (1.2/50 µs) (1.2/50 µs) (1.2/50 µs) (1.2/50 µs)
A82-10 50
2Specifications are subject to change without notice (25.01.06)
A82-10, A 82-20
Output Specifications
Rated insulation voltage (cable) 250 VACrms
Output current 10: 0 - 20 mADC
20: 4 - 20 mADC
Power supply (loop voltage) 10 - 40 VDC
Tolerance of output current
@50 Hz A 82-10 ±2% ±0.08 mA
A82-20 ± 2%
Temperature variation ±400 ppm/ºC
Frequency range 40 Hz -1 kHz
Frequency variation 10 ppm/Hz
Maximum output current 35 mADC
General Specifications
Power ON delay <1s
Reaction time τ<100 ms
worst case reaction time
may be up to 5 x τ
Indication for
Power supply ON LED, green
Environment
Degree of protection IP 20
Pollution degree 3 (IEC 60664)
Operating temperature -20° to 50ºC (-4° to +122 ºF)
Housing
Dimensions 95 x 67.5 x 20 mm
Material ABS
Weight A82-10 300 g
A82-20 270 g
Connection cable
A82-10 2 m, 3 x 0.25 mm2
A82-20 2 m, 2 x 0.25 mm2
Approval UL
CE marking Yes
EMC Electromagnetic Compatibility
Immunity Acc. to EN 61000-6-1
(tolerance of output current:
± 2%)
Acc. to EN 61000-6-2
(tolerance of output current:
± 5%)
Emission Acc. to EN 61000-6-3
A82-10, A 82-20 arecurrent
metering transformers with
standardsource/sink output
0-20 mA/4 - 20 mA. This
makes it veryuseful as an
AC current interface to a
PLC with mADC input.
Used with relays DIB01,
PIB01, DIC01, PIC01 or
S183 one or moresetpoints
can monitor the current and
signal alarm. S 183 also pro-
vides the DC voltage supply
for the A 82-10, A 82-20.
The metered conductor is
drawn through the central
hole of the current metering
transformer. It is possible to
meter currents below the
nominal range by drawing
the conductor through the
hole several times. If the
conductor is drawn through
the central hole e.g. 5 times,
the transformer will register
50 A when the current in the
conductor is 10 A.
A82-10 has factory-set gain
(span) adjustment, whereas
A82-20 has zeroas well as
gain (span) adjustment, both
factory-set.
Note: Do not change the set
values.
Mode of Operation
Wiring Diagrams
A82-10 ... (source)
Yel-
low Black
Red
Power
supply
R load
I
+
A82-20 ... (sink)
Grey
Black
Loop
voltage
R load
I
+
Specifications are subject to change without notice (25.01.06) 3
Dimensions
Resistance/Voltage Curve
Max. load resistance versus Power supply (loop voltage)
(V)
Power supply
(loop voltage)
Max. R load (Ω)
A82-10, A 82-20
Input/Output Curve
20
16
12
8
4
50 100 Input
(% of range)
Output
(mADC)
A 82-20
A 82-10
