Data Sheet

Non-contractual document
906131102B - Ed 1
2.09 (1/1)
MN series
Current clamp for AC current
Model MN71
ELECTRICAL SPECIFICATIONS
•
Current range:
0.01 AAC .. 12 AAC
•
Output signal:
100 mV AC / AAC (1.2 V for 12 A)
•
Accuracy and phase shift
(1)
:
Primary current 0.01 A .. 0.1 A 0.1 A .. 1 A 1 A .. 5 A 5 A .. 12 A
Accuracy in % of output signal ≤3 % + 0.1 mV ≤2.5 % ≤1 %
Phase shift not specified ≤5 ° ≤3° ≤3°
•
Bandwidth:
40 Hz .. 10 kHz
•
Crest factor:
5 for a current of 40 A peak (8 A
RMS
)
•
Maximum currents:
20 A continuous for a frequency ≤10
kHz (limitation proportional to the inverse
of one tenth of frequency beyond)
•
Load impedance:
> 1 MΩ
•
Operating voltage:
600V
RMS
•
Common mode voltage:
600 V category III and pollution degree 2
•
Infl uence of adjacent conductor:
<15 mA / A at 50 Hz
•
Infl uence of conductor position in jaws:
<0.5 % of output signal at 50/60 Hz
•
Infl uence of frequency
(2)
:
<5 % of output signal from 20 Hz .. 1 kHz
<10 % of output signal from1 kHz .. 10 kHz
•
Infl uence of crest factor:
< 3 % of output signal for crest factor < 5 with
current <40 A
RMS
MECHANICAL SPECIFICATIONS
•
Operating temperature:
-10 °C to +55 °C
•
Storage temperature:
-40 °C to +70 °C
•
Infl uence of temperature:
≤0.2 % of output signal per 10 °K
•
Relative humidity for operation:
0 to 85% RH decreasing linearly above 35 °C
•
Infl uence of relative humidity:
<0.2 % of output signal from 10% to 85% RH
•
Operating altitude:
0 to 2,000 m
•
Max. jaw opening:
20mm
•
Clamping capacity:
Cable: Ø max 20mm
Busbar: 1 busbar of 20 x 5mm
•
Casing protection rating:
IP40 (IEC529)
•
Drop test:
1m (IEC68-2-32)
•
Shock resistance:
100 g (IEC68-2-27)
•
Vibration resistance:
10 / 55/10 Hz, 0.15mm (IEC68-2-6)
•
Self-extinguishing capability:
Casing: UL94 V2
Jaws: UL94 V0
•
Dimensions:
135 x 51 x 30mm
•
Weight:
180 g
•
Colours:
Dark grey case with red jaws
•
Output:
1.5 m two-wire lead with double or reinforced
insulation terminated by 2 elbowed male safety
plugs (4 mm)
SAFETY SPECIFICATIONS:
•
Electrical safety:
Instrument with double insulation or reinforced
insulation between the primary the secondary and
the grippable part located under the guard as per
IEC1010-1 & IEC1010-2-032
- 600V category III, pollution degree 2
- 300V category IV, pollution degree 2
•
Electromagnetic compatibility (EMC):
EN50081-1: classB
EN50082-2:
- Electrostatic discharge: IEC1000-4-2
- Radiated field: IEC1000-4-3
- Fast transients: IEC1000-4-4
- Magnetic field at 50 Hz: IEC1000-4-8
(1) Conditions of reference: 23 °C ± 3 °K, 20 % to 75 % RH, sinusoidal signal with frequency of 48 Hz to 65 Hz, external magnetic fi eld <40A/m,
no DC components, no external conductor with circulating current, conductor centred for measurement, load impedance > 1 MΩ.
(2) Out of reference domain
DESCRIPTION
This clamp was specially designed to measure current
on current transformer secondary circuits.
Current
10 AAC
Output
100 mV / A
To order Reference
AC current clamp model MN71 with operating manual P01120420