Sonel MPI-540 User Manual

MPI-540 – USER MANUAL
197
Correcting zero DC indication
After making sure that the jaws are closed and there is no conductor between them, connect them to
PQM analyzer and run "Sonel Analysis" software in the current preview mode (pay attention to cor-
rectly configure the measurement point for the measurement with clamps C-5). Press the knob and
turn it around until zero is reached in constant current component.
Reference conditions
a) temperature: ................................................................................................................. +18…+28°C
b) relative humidity: .............................................................................................................. 20…75%
c) battery voltage: ............................................................................................................... 9 V ± 0.1 V
d) conductor position ..................................................................... the conductor centred in the jaws
e) current: .............................................................................. direct (DC) or sinusoidal (AC) f ≤ 65 Hz
f) permanent magnetic field: ............................................................. <40 A/m (Earth's magnetic field)
g) variable, external magnetic field: ............................................................................................ none
h) conductors in the immediate vicinity: ....................................................................... no current flow
Technical data
a) accuracy:
Current range
.
0.5…100 A
100…800 A
800…1000 A (AC)
800…1400 A (DC)
Basic uncertainty
1)
 1.5% + 1 A
 2.5%
 4%
1)
as % of the measured value
b) phase error (45...65 Hz):
Current
range
.
10…200 A
200…1000 A
Phase error
 2.5
 2
c) ratio: ................................................................................................................................. 1 mV/1 A
d) frequency range:............................................................................................................ DC...5 kHz
e) output impedance: .................................................................................................................. 100 Ω
f) DC zero adjustment range: .................................................................................................... ±10 A
g) noise:
DC up to 1 kHz: ............................................................................................. 1 mVp-p (or 1 Ap-p)
DC up to 5 kHz: ....................................................................................... 1.5 mVp-p (or 1.5 Ap-p)
1 Hz up to 5 kHz: ...................................................................................... 0.5 mVp-p (or 0.5 Ap-p)
h) additional errors:
due to current frequency:
65..440 Hz: ................................................................................................... -2%
440..1000 Hz: ............................................................................................... -5%
1..5 kHz: ..................................................................................................... -4 dB
due to the battery voltage: ..................................................................................................... ≤1A/V
due to temperature: .............................................................................  300 ppm/C or 0.3%/10C
due to relative humidity in the range of 10…85%: .................................................................. ≤0.5%
i) due to the position of the conductor with diameter 20 mm:
DC dup to 440 Hz: .................................................................................... 0.5%
DC up to 1 kHz: ........................................................................................... <1%
DC up to 2 kHz: ........................................................................................... <3%
DC up to 5 kHz: ......................................................................................... <10%
j) due to a parallel conductor with 50…60 Hz, located within 23 mm of the clamps: ..........................
........................................................................................................................................ <10 mA/A
k) due to an external magnetic field of 400A / m (50 Hz), influencing the centred conductor
.............................................................................................................................................. <1.3 A
l) in-phase rejection factor ......................................................................... 65 dB A/V (50…400 Hz)

Sonel MPI-540 Specifications

General

Brand	Sonel
Model	MPI-540
Category	Measuring Instruments
Language	English