The JLSZV-10 is a 10kV three-phase, three-wire, outdoor, epoxy resin cast, V/V connected current and voltage combination transformer, commonly known as a "high-voltage metering box." It is suitable for outdoor pole-mounted installations, pad-mounted substations, small substations, and urban and rural power grid upgrades in 10kV three-phase, three-wire systems. It provides functions including energy metering (for billing), voltage/current measurement, relay protection, and fault monitoring.
Main Parameters:
1. Rated Transformation Ratio
• Voltage: 10000/100V
• Current: 5~1000A / 5A (or 1A); common ratios include 7.5/5, 10/5, 15/5, 20/5, 30/5, 40/5, 50/5, 75/5, 100/5, 150/5, 200/5, 300/5, 400/5, 500/5, 600/5, 800/5, 1000/5
2. Accuracy Class and Rated Output
• Metering: 0.2S/0.2 class (20VA), 0.5S/0.5 class (50VA)
• Protection: Class 1 (100VA), Class 3
3. Insulation Level
• 12/42/75kV (Rated / Power Frequency Withstand Voltage / Impulse Withstand Voltage)
4. Dynamic and Thermal Stability
• Short-time thermal current: 100Iₙ/1s
• Dynamic stability current: 250Iₙ (peak value)
5. Structure and Features
• Integrated casting: Two CTs and two VTs combined into one unit, compact size and space-saving design.
• Oil-free explosion-proof: Dry-type epoxy resin construction, fire-resistant, explosion-proof, moisture-resistant, maintenance-free; replaces oil-immersed JLSJW-10.
• Outdoor weather resistance: UV-resistant, anti-aging, pollution-resistant, ideal for pole-mounted applications, pad-mounted substations, and urban/rural power grids.
• High accuracy: 0.2S/0.5S class, meeting requirements for trade settlement metering.
