The JSZV12A-3-6-10R three-phase voltage transformer is designed for indoor distribution systems, used for voltage measurement, energy metering, relay protection, insulation monitoring, and can also serve as a secondary circuit power source.
Main Parameters (50 Hz, indoor):
• Rated transformation ratio
◦ 3R: 3000/100 V
◦ 6R: 6000/100 V
◦ 10R: 10000/100 V
• Accuracy class and rated output (VA per phase)
◦ Metering: Class 0.2 / 20 VA, Class 0.5 / 50 VA
◦ Protection: Class 1 / 100 VA
• Maximum output: 500 VA per phase
• Insulation level (kV)
◦ 3R: 3.6/25/40
◦ 6R: 7.2/32/60
◦ 10R: 12/42/75
• Built-in fuse: 0.5 A (primary side)
• Wiring: V/V (three-phase, three-wire)
• Protection/insulation: IP20, Class F
• Environment: −5°C to +40°C, altitude ≤ 1000 m
Structure and Features:
• Fully enclosed epoxy resin casting provides moisture resistance, flame retardancy, and aging resistance.
• V/V wiring configuration reduces cost and is suitable for three-phase, three-wire systems.
• Built-in primary-side fuse enables rapid fault interruption, protecting equipment and the system.
• Compact size and space-saving design make it ideal for use in medium-voltage switchgear, ring main units, and pad-mounted substations.
