Flex current clamps A 1501, A 1502 and A 1503
9
7 Technical specifications
7.1 A 1501 and A 1502
FEATURES
DESCRIPTION
NOTES
Length of the sensor
A 1501
– 25 cm / 10 in
A 1502
– 48 cm / 25 in
Max. conductor diameter
A 1501
– 7 cm / 2,7 in
A 1502
– 14 cm / 5,5 in
Nominal current range
30 A / 300 A / 3000 A ac rms,
with current crest factor 3
Effective measuring range
30A range: 3 A
… 45 A
300A range: 15 A
… 450 A
3000A range: 80 A
… 4500 A
3,5
Maximal current
60 A / 600 A / 6000 A of pure sinus current
Bandwidth
10 Hz
… 8 kHz
1
Accuracy
±1.2 % of reading
2,3
Position sensitivity
±1 % of nominal current range
Temperature dependency
+/-
0.01 % of reading / ºC
Residual current (noise)
30A range: 0.12 A
300A range: 0.3 A
3000A range: 3 A
3
Phase error
<0.2
° @ 50 Hz
<3
° @1.5 kHz
External magnetic field
rejection in reference to
adjacent conductor
Min. 40 dB ( < 1% of adjacent conductor current)
4
Electrical Safety
Double insulation
EN 61010
– CAT III / 1000 V up to 3000 m
Pollution degree
2
Working and storage
temperature range:
Flexible current sensor: -20
… 85 ºC
Other clamp parts: -20
… 70 ºC
Humidity
95 % RH (0
C
… 40
C), non-condensing
Weight of flexible sensor
A 1501
– < 150 g
A 1502
– < 170 g
Water and dust proofing
IP 65
1. Limits of bandwidth corresponding to a relative gain > - 3 dB
2. Reference conditions:
Frequency 50/60 Hz;
conductor is in the centre and perpendicular to the current clamps;
temperature 23
ºC;
Clamps connected to MI 2892 Power Master;
Laboratory environment.
3.
𝑀𝑒𝑎𝑠𝑢𝑟𝑒𝑚𝑒𝑛𝑡 𝑒𝑟𝑟𝑜𝑟 = √(
𝐼
𝑅𝑒𝑠𝑖𝑑𝑢𝑎𝑙
𝐼
𝑀𝑒𝑎𝑠𝑢𝑟𝑒𝑑
∙ 100)
2
+ 𝐴𝑐𝑐𝑢𝑟𝑎𝑐𝑦
𝐶𝑙𝑎𝑚𝑝
2
+ 𝑃𝑜𝑠𝑖𝑡𝑖𝑜𝑛
2
+ 𝐴𝑐𝑐𝑢𝑟𝑎𝑐𝑦
𝑀𝐼2892
2
4. Adjacent conductor
≥
20 cm from current clamps.
5.
With accuracy: ±5 % of reading from the MI 2892 Power Master in real
conditions (with position, residual current, and intrinsic errors included)
