Teseq VAR 3005-S16 Single Voltage Source

The automated variable transformer series VAR 3005 is a standard accessory for the Teseq NSG 3040 and NSG 3060/CDN 3061 instrumentation. In combination with a PQT (Power Quality) module it provides a convenient means for reducing the incoming supply voltage by adjusting the incoming EUT supply voltage to arbitrary voltages.
It is required for power quality testing (PQT) dips and interrupts and is compliant with the latest revision of IEC/EN 61000-4-11 including the variation test.
The VAR 3005 units are fully automatic controlled, driven from NSG, using the touch panel interface SUI or the WIN software application. To prevent incorrect testing, the phase, neutral and earth line of EUT IN power line is observed and the 50/60 Hz frequency range will be set automatically. This feature helps especially in case where “cycle” parameter is set in a test procedure.

The VAR 3005 can be connected either via a NSG 3040 with its internal coupling device or via the NSG 3060 in combination with a CDN 3061 and the built in power quality (PQT) module. The EUT input frequency will be detected automatically for a correct synchronization of the PQT events.

The VAR 3005-S16 is an automated single variac rated for 16 A, 265 VAC. Once detected, the settings of the variation voltage Uvar will be possible in Volts or % of mains voltage, to set the recommended value given in the standard like 0, 40, 70 or 80% or any other value settings are possible.

The recommended standard variation test can be performed by setting the variac to 70%. The PQT switch from the NSG will switch (abruptly) to the 70% level and then the variac will increase the voltage up to the 100% (Uin) values.