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7
Instruction manual for current clamp LW-MZ-50
7.0 Technical data
• Temperature:
-10° ... +50°C
• Rel. humidity:
20% ... 75%
• The conductor is in the centre of the clamps
• Sinusoidal alternating current with:
10 Hz...150 kHz
• THD:
< 1%
• No DC component
• External DC magnetic field:
Earth magnetic field (<40 A/m)
• Input impedance:
≥ 1 MΩ and ≤ 47 pF
• No external AC magnetic field
• No other live conductors in the vicinity
8.0 Usage
8.1 Measuring deviation and phase error
Range 10 A (30 A peak max.)
Current strength in A~
0,01...0,5 A
0,5...2 A
2...10 A
10...12 A
Measurement deviation (1)
≤ 3%
(3)
Phase error
(2)
≤ 15°
≤ 10°
≤ 5°
Range 1 A (3 A peak max.)
Current strength in A~
0,01...0,05 A 0,05...0,2 A
0,2...1 A
1...1,2 A
Measurement deviation (1)
≤ 3%
(3)
Phase error
(2)
(2)
≤ 15°
≤ 5°5
(1) In % of the output signal (2) No information
(3) Sinusoidal, 50 Hz...10 kHz
8.2 Operating conditions
To ensure the safety of the user and the metrological properties, the current
clamps must be operated under the following conditions.
