AEMC instruments 2136.35, Руководство пользователя

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Power Quality Analyzer PowerPad
®
IV Model 8345 91
Nominal current (A
nom
) depending on the sensor
Current Sensor
Nominal
RMS
Current
A
nom
(A)
Full-Scale Technical
RMS per Class A
(2)
Full-Scale
Commercial RMS
per Class A
(3)
AmpFlex
®
193 and
100 A
nom
1000 A
nom
10,000 A
nom
14.14 A to 16.97 A
141.42 A to 169.71 A
1414.21 A to 1697.06 A
(1)
30 A
300 A
3000 A
(1)
MiniFlex
®
MA194-24-BK
100 A
nom
1000 A
nom
10,000 A
nom
14.14 A to 16.97 A
141.42 A to 169.71 A
1414.21 A to 1697.06 A
(1)
30 A
300 A
3000 A
(1)
SR193 clamp 1000 A
nom
471 A to 566 A 500 A
MR193 clamp 1000 A
nom
471 A to 566 A 500 A
MN93 clamp (200 A) 200 A
nom
94.3 A to 113 A 100 A
MN193 clamp (5 A)
MN193 clamp (100 A)
5 A
nom
1.77 A to 2.12 A 2 A
100 A
nom
47.1 A to 56.6 A 50 A
SL261 clamp (10 mV/A)
SL261 clamp (100 mV/A)
100 A
nom
47.1 A to 56.6 A 50 A
10 A
nom
3.54 A to 4.24 A 4 A
1. AmpFlex
®
and MiniFlex
®
current sensors do not guarantee Class A at full scale
because they generate a signal proportional to the current’s
differential coefficient,
and the scale factor can easily reach 3, 3.5, or 4 if the signal is not sinusoidal.
2. Calculation formulas:
Lower Value Upper Value
x A
nom
√ 2
CF
Class-A
x x A
nom
√
2
CF
Class-A
1.2
The factor 1.2 follows from the instrument’s current input capacity to accept 120 % of
A
nom
with a sinusoidal signal.
A
nom
≤ 5 A => CF
Class-A
= 4
5 A < A
nom
≤ 10 A => CF
Class-A
= 3.5
10 A < A
nom
=> CF
Class-A
= 3
3. The commercial full-scale RMS value is chosen inside the technical full scale.