Three-phase delta

Variable Transformer (Autotransformer) Three Phase:
Variable Transformer 1.5 KW STT-1.5KVA for manually decreasing or manually increasing voltage 2 Amps with constant output 0 to 500 V Digital display for output voltage.
Variable Transformer 3 KW STT-3KVA for manually decreasing or manually increasing voltage 4A with constant output of 0-550 V Digital display for displaying output voltage.
Variable Transformer 6-kV STT-6KVAto reduce or increase manually the voltage with a current of 8 Amps with a constant output of 0-500V. Digital display for displaying the output voltage.