Measuring voltage transformers JNT SO are designed to transmit measurement information signals to measuring instruments, protective devices, automation, signaling and control in voltage networks from 3.3 to 42 kV AC, industrial frequency 50 or 60 Hz.
Measuring voltage transformers (VT) of the JNT SO series are designed for indoor installation.
According to the principle of operation, they are inductive, single-phase, single-pole, grounded. Voltage transformers (VT) have a cast housing made on the basis of an epoxy compound. The insulation material of voltage transformers has excellent arc, ozone and ultraviolet protection characteristics, while it has high mechanical strength, so that the transformers can work for more than 30 years without any maintenance.
The difference between these transformers is the presence of fuses in the design to protect transformers from high currents. The fuses can be arranged either vertically, in which case the marking will be JNT SOV, or horizontally, in which case the marking will be JNT SOH.
Additionally, measuring voltage transformers, at the request of the customer, can be equipped with a ferroresonance protection device.
ADVANTAGES OF CAST RESIN VOLTAGE INSTRUMENT TRANSFORMERS
Voltage transformers (VT) of the JNT SO series were developed for operation in complete switchgear, transformer substations, at traction substations of railways, as part of complete switchgears of traction substations, at hard-to-reach facilities where equipment maintenance is not required, at enterprises with high pollution. .
Transformers meet the requirements of IEC, ANSI, IEEE, GOST standards.
It is possible to manufacture a three-phase assembly on a common frame.
JNT SO voltage instrument transformers are a good alternative to obsolete and obsolete oil-insulated current transformers.