Electrical Performance Parameters
| NO. | Item | Measuring Terminal | Measured Value | Test Condition | Standard Test Instruments |
| 1 | Rated Input Current | Through-core | 100 A | 25∘C | Transformer calibrator;Precision current transformer;Current & voltage generator;Resistance box;Digital multimeter;Power frequency withstand voltage tester |
| 2 | Rated Output Current | Crystal Head | 25 mA | 25∘C | |
| 3 | Maximum Input Current | Through-core | 120 A | 25∘C | |
| 4 | Operating Frequency | — | 50/60 Hz | 25∘C | |
| 5 | Accuracy Class | — | 0.5 | 25∘C | |
| 6 | Phase Angle Error | — | ≤30′ | 25∘C | |
| 7 | Burden Resistance | Crystal Head | ≤20 Ω | 25∘C | |
| 8 | Ratio Error Nonlinearity | — | ≤0.2% | 25∘C | |
| 9 | Phase Angle Error Nonlinearity | — | ≤15′ | 25∘C | |
| 10 | Withstand Voltage | P-S | 4 kVac | 1 mA, 1 min | |
| 11 | Insulation Resistance | P-S | ≥500 MΩ | Rated voltage 500 Vdc | |
| 12 | Enameled Wire Thermal Class | CLASS F (155∘C) | |||
| 13 | Operating Temperature | −40∘C∼75∘C | |||
| 14 | Secondary Output | UL2464+UL2547 one-drag-three cable, cable length 1.5 m | |||
| 15 | Open-circuit Protection | Open-circuit protection component installed on transformer secondary side, open-circuit voltage ≤10 V | |||
Core Product Features
1. Three Phase CTs Integrated Into One Compact Unit
One CT Assembly For Three Phase Current Measurement
Three current transformers are integrated into a single compact housing, enabling three-phase current measurement through one integrated cable connection. This design reduces wiring complexity, minimizes installation space, and improves system integration efficiency.
Buyer Value:
- Simplified panel wiring
- Reduced installation time
- Space-saving solution for compact electrical cabinets
2. Class 0.5 High Accuracy For Reliable Energy Measurement
Stable And Precise Current Measurement Performance
With Class 0.5 accuracy, the CTF16LA provides reliable current measurement performance for smart energy meters, power monitoring systems, and energy management applications.
Key Performance:
- Accuracy Class: Class 0.5
- Ratio Error Non-Linearity: ≤0.2%
- Phase Angle Non-Linearity: ≤15′
The specification confirms the accuracy class as 0.5, with measured non-linearity performance parameters defined in the product specification.
3. Split Core Design For Fast Retrofit Installation
Install Without Disconnecting Existing Cables
The split core structure allows direct installation on existing power cables without cable removal or system shutdown, making it ideal for:
- Electrical retrofit projects
- Smart meter upgrades
- Energy monitoring system installation
- Existing distribution cabinet upgrades
The specification indicates the CT can be directly mounted on the primary current line and fixed with cable ties.
4. 3×100A Primary Current Measurement With 25mA Output
Optimized Signal Interface For Smart Monitoring Systems
Designed for:
- Rated primary current: 100A
- Maximum input current: 120A
- Secondary output current: 25mA
Suitable for connection with:
- Smart energy meters
- Power monitoring devices
- EMS systems
- Data acquisition equipment
The product specification lists rated input current 100A, maximum input current 120A, and output current 25mA.
5. Built-In Secondary Open Circuit Protection
Enhanced Safety For Measurement Applications
Integrated secondary protection limits the open circuit voltage to ≤10V, improving operational safety and protecting connected measurement equipment.
6. Wide Industrial Temperature Range
Reliable Operation From -40℃ To +75℃
Designed for demanding electrical environments with a wide operating temperature range:
Operating Temperature:
- -40℃ to +75℃
Suitable for:
- Industrial power distribution
- Outdoor electrical cabinets
- Renewable energy systems
- EV charging infrastructure
7. High Electrical Insulation Performance
Safe Isolation For Electrical Monitoring Systems
The CT provides strong electrical insulation performance:
- Dielectric strength: 4kVac / 1mA / 1min
- Insulation resistance: ≥500MΩ
Ensures reliable isolation between primary current circuits and measurement systems.
Why CTF16LA Is Different From Conventional Current Transformers
A Compact Three-Phase CT Solution Designed To Simplify Installation, Improve Panel Utilization, And Streamline Energy Monitoring Integration.
| Traditional CT Approach | CTF16LA Solution |
|---|---|
| Separate CTs for each phase | Three CTs Integrated Into One Unit |
| More individual wiring | One Integrated Connection Interface |
| More installation space | Compact Three Phase Structure |
| More complex retrofit work | Split Core Installation |
| Additional secondary protection may be required | Built-In Open Circuit Protection |
| General-purpose current measurement | Designed For Smart Metering & Energy Monitoring |