AMETEK CTS
H-Field Test
Operating Manual
V 1.20
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2.2.3.
Test setup for power frequency magnetic field test
Warning
For magnetic field testing the power mains input at PF1
must be disconnected
.
A message appears to confirm, that the PF1 generator input is disconnected
from the mains. This guarantees that in the event of a fault, the 230 V mains
voltage can never be applied to the MFT 30 and that a high H-field is present.
The voltage V is adjusted with a variable transformer. The MFT 30 is a short circuit transformer that generates
the required current into the 1 m x 1 m loop antenna with one turn. For the standard antenna, the standard
defines a current of 1,145A for a magnetic field of 1 m
-1
.
The variable transformer VAR 3005A-S16 will be controlled automatically via the test generator. Any equivalent
manual transformer available in the lab can be used to control the current manually. Please take care that the
variable transformer has enough current capability.
2.2.4.
Test setup with MFT 30 for H-Fields up to 30 A/m
Schematics Test setup
Schematics and Test setup with NSG 3040A, VAR 3005A-S16, MFT 30 and MFC 1000.1
Options required for magnetic field tests as per IEC 61000-4-8
- External variable motor variac
VAR 3005A-S16
- External magnetic field antenna
MFC 1000.x
- External current transformer
MFT 30
to test 1, 3, 10 and 30 A/m levels (continuous)
