Product range	Accessories
Accessories	Additional tappings
Current range	< 16 A
For use with	STZ
Can be retrofitted	Secondary
For use with	single-phase transformers
Cu factor	0,00 kg
Notes	Selection of the correct tap Ordering example for single-phase transformers selected transformer STZ0,25(400/24) required voltage of additional tapping 22 V the current for selection of the tapping is calculated as follows: I = S/U I = Current S = Apparent power U = Voltage of the tapping I = 250/22 = 11.4 A ￫ +ZA16 For the secondary tap, the correct suffix is: +ZA16S(22) A primary side additional tapping is determined in the same manner. Ordering example for three-phase transformers selected transformer DTZ0,25(400/24) required voltage of additional tapping 22 V the current for selection of the tapping is calculated as follows: I = S/√3 x U) I = Current S = Apparent power U = Voltage of the tapping I = 250/(√3 x 22) = 6.6 A ￫ +DZA16 For the secondary tap, the correct suffix is: +DZA16S(22) A primary side additional tapping is determined in the same manner.
Operating ambient temperature min.	-25 °C
Operating ambient temperature max.	+40 °C
Type of accessory	Other
North America Certification	UL/CSA certification not required

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