A 1179, A 1257, A 1395 Flex current clamps
14
10 Technical specifications
FEATURES NOTES
DESCRIPTION
Length of the sensor
48 cm
Measuring range A1179
20 A / 200 A / 2000A ac rms
Measuring range
A1257/A1395
30 A / 300 A / 3000A ac rms
Overscale A1179
40A / 400A / 4000 A sinus
Overscale A1257/A1395
60A / 600A / 6000 A sinus
Sensitivities A1179
50 mV / A; 5 mV / A; 0.5 mV / A
Sensitivities A1257/A1395
33.3 mV / A; 3.33 mV / A; 0.333 mV / A
Bandwidth 1
10 Hz up to 8 kHz
Accuracy 2,3,4
+/-1 %
Linearity (10 % to 100 %)
2,3,4
+/-0,2 %
Position sensitivity
6
+/-2 % of full scale
Temperature dependency
9
+/-0.02 % of reading / ºC
External fields
7
+/- 1% of full scale
Noise (residual current)
A1179
2,4
<4 mV/ <1 mV/ <1 mV, equivalent to 0.08 A (range
20 A) / 0.2 A (range 200 A) / 2 A (range 2000 A)
Noise (residual current)
A1257/A1395
2,4
<4 mV/ <1 mV/ <1 mV, equivalent to 0.12 A (range
30 A) / 0.3 A (range 300 A) / 3 A (range 3000 A)
Nominal output voltage
1 V at full scale
Minimum load impedance in
output
2
10 k
(internal output is 150
)
Phase error
<1° @ 50Hz
<10° @1.5kHz
Crest factor
Up to 3.0
Overrange indication
Corresponding range LED indication starts blinking
Power supply
2 x 1,2 V AA NIMiH rechargeable batteries or
2 x 1,5 V AA alkaline
Low battery indication: Low Bat blinking
Auxiliary External Power
Supply
Standard Power Supply 220 VA C / 12 V DC,
maximum consumption 30mA.
Authonomy 5
>120 h
External power supply
12 V DC 300 mA
Battery Charger
Integrated battery charger with constant current cca
160mA. Charging battery indication: Low Bat ON
Electrical Security
Double insulation
EN 61010 – 1000 V- Cat III- Contamination Deg. 2
Environment Conditions
8
Sensor
: Usage and storage: -20 to 85 ºC
and 15 % to 85 % RH (without condensing)
Module
: Usage and storage: -20 to 70 ºC
and 15 % to 85 % RH (without condensing)
Dimmensions / Weight
Enclosure : 120 x 65 x 22 mm / 220 g
Attached signal cable: 1 m (other lengths upon
request)
Weight of flexible sensor
< 130 g
Water and dustpruffing
Sensor
: IP 64
Module
: IP 40
