Voltage transformer ZNTOLP-NTZ-6 and ZNTOLP-NTZ-10 is a combined transformer including groundable voltage transformer and current transformer with secondary winding, is to be installed in switchgears of 10 kV voltage class and is a completing device. Voltage transformer provides electricity metering devices, measuring equipment, relay protections, automatics with power and is used when the measurement of phase and control of network insulation and also when current measurement in 6kV or 10kV network is required.Output of a primary winding "A" of the voltage transformer is combined with the primary output Л1 of the current transformer, which is located on the upper surface of a transformer. Groundable output "X" and the secondary windings of Voltage and Current transformers are located in the bottom part of the transformer. The body of the transformer is made solid, compound is on the base of epoxy is the main insulating element. It protects the windings from climatic and mechanical impacts. The transformer has a built-in fuse.