Electronic combination transformerDetailed product description：

The JLSGB electronic current voltage combination transformer is an outdoor device designed specifically for 35kV~220kV power systems.
Suitable for power systems with a rated frequency of 50Hz (or 60Hz) and a rated voltage of 35kV~220kV, providing current and voltage in the primary system for metering and relay protection.
reference standard
GB/T 20840.7 "Transformers - Part 7: Electronic Voltage Transformers"
GB/T 20840.8 "Transformers - Part 8: Electronic Current Transformers"
GB/T 1208 "Current Transformers"

Introduction to the Structure of JLSGB-35~220kV Electronic Combination Transformer
The main insulation adopts the LGB type high-voltage current transformer, and the outer insulation is a silicone rubber outer sheath and umbrella skirt. It is small in size, light in weight, easy to operate and maintain, anti pollution flash, fireproof, and explosion-proof.
The secondary part adopts an iron core coil type low-power current transformer winding, which is connected in series with a "terminal screen current and voltage forming circuit" in the capacitor core grounding (terminal screen) circuit. The analog-to-digital conversion device consists of an analog-to-digital conversion circuit, a digital optical conversion circuit, a merging unit, and a DC power supply. The voltage forming circuit outputs an analog voltage, which is converted into data transmitted in the form of optical signals.

Technical parameters of JLSGB-35~220kV electronic combination transformer
Rated voltage: 35kV, 66kV, 110kV, 220kV
Rated primary current: 50-3000A
Measurement accuracy: 0.2S
Protection level accuracy: 3P (voltage), 5P, 5TPE (current), 6P (voltage)
The conversion of current and voltage shall use 2D41H (decimal 11585) rated input voltage ± 5V analog-to-digital conversion circuit uniformly