7The tap off after 1 turn is also used for tests per IEC 61000-4-9 and IEC 61000-4-10,
which both require a single turn coil.
For tests per IEC 61000-4-8, INA 703 can be used as an accessory to the Teseq
proine system, together with a NSG 1007- 5 kVA source, the INA 2141 impedance
box and the WIN 2120 software can generate supply frequency elds (50 and
60 Hz) up to 330 A/m continuously and 1100 A/m short term (3 s).
It can also be used with the MFO 6501 or 6502 current sources and the NSG 3000
series of generators and generate Supply frequency elds (50 and 60 Hz) up to
120 A/m continuously and 120 A/m short term (3 s).
For tests per IEC 61000-4-9, INA 703 can be used together with a classic combined
wave generator as available in NSG 3040 or NSG 3060 series plus a pulse wave
shape adaptor box INA 752.
For tests per IEC 61000-4-10, INA 703 can be connected to an adequate slow oscil-
latory waves generator.
Thanks to the multi wire concept and to the professional mechanical design, like U
shape base on rolls which allows convenient approach and positioning to the test
table, INA 703 is the ideal accessory for magnetic eld testing.
2.2 Supply frequency magnetic elds
Supply frequency magnetic eld tests, simulate the magnetic elds typically gener-
ated by the current ow in power supply cables as specied in IEC/EN 61000-4-8.
Such magnetic elds can affect the operation of items of equipment that are sensi-
tive to them.
For testing to IEC 61000-4-8, the INA 703 needs to be supplied by a regulated 50 or
60 Hz current (THD<8%) of maximum 10 A continuously and 35 A short term (<5 s).
Single turn, 5 turns , and 37 turns can be selected in order to reach high elds with
low currents, but maintaining good resolution for lower elds testing.
