METREL A 1398 PQA, Instruction Manual

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A 1398 PQA Iron Current Clamp Technical specifications
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Technical specifications
Nominal current (I
Nom
) ................................... 10 A
Nominal current range .................................. 5 % I
Nom
… 200 % I
Nom
Maximal current (I
Max
) ................................... 20 A
Crest factor @ Nominal current .................... 4,0
Peak current .................................................. 40 A
Bandwidth ..................................................... 40 Hz
… 400 Hz
Uncertainty .................................................... ± (0,5 % of reading ± 10 mA)
Phase Error .................................................... ± ≤ 0,45 ° (50 – 60 Hz)
External fields ................................................ 30 A/m (No influence)
Continuity of measurements ......................... 20 A (continuous)
30 A (40 min / 20 min intermitted)
Dimensions & Mechanical data:
Current sensor type ....................................... D
Length of connection cable ........................... 1,2 m
Jaw opening ................................................... 13 mm
Maximum conductor sizes............................. fi < 13 mm
Length of connection cable ........................... 1,2 m
Dimensions (W x H x L) .................................. 27 mm x 52 mm x 170 mm
Weight .......................................................... 340 g
Safety specification:
Over-voltage category ................................... No CAT, (can be used on insulated conductors in 300 V CAT II)
Pollution degree ............................................ 2
Degree of protection ..................................... IP 40
EMC:
Emission ......................................................... Class B
Immunity ....................................................... Portable equipment
Environment conditions:
Working temperature range ......................... - 10 °C … 50 °C
Storage temperature range ........................... -20 °C … 6 0 °C
Humidity range .............................................. 0 %RH … 80 %RH
Reference temperature range ....................... 25

C ± 5

C @ 40 %RH … 60 %RH
Altitude .......................................................... up to 2000 m
Operation ...................................................... Indoor use
Substitute Electric Model for A 1398 PQA Iron Current Clamp
Equivalent circuit diagram for current clamp measurement:
In
str
um
e
nt
Im
I
V
Is
1:2500
Figure 3: A 1398 PQA Iron Current Clamp - block diagram
Symbols on circuit diagrams have following meaning:
Im Measured (AC) current, primary current
Is Secondary transformer current