Products
Products
Installation & Application（安装应用） NKB-255 Frequency Transmitter is designed for real-time monitoring of grid frequency parameters in substations and power plants. It accepts an AC signal input or directly derives the frequency signal from the AC operating power supply. After conversion by the transmitter, it outputs a proportional analog DC current or voltage signal, which can be received by conventional RTUs or other data acquisition devices.
Product Dimension Drawing
Product Wiring Diagram
Technical Parameters（技术参数） | Model | NKB-25S | Input Power Consumption | < 3VA |
| Accuracy | ±0.2%, ±0.5% Optional | Withstand Voltage | ≥ 2.5KV |
| Input Frequency Range | 45~55Hz, 55~65Hz, etc. Optional | Shell Material | Flame-Retardant ABS |
| Input Voltage | 100V, 220V, 380V, etc. Optional | Dimension (W×H×D) | 55×75×120 (mm) |
| Output Range | 0~20mA, 4~20mA, 0~5V, 0~10V, 1~5V, etc. Optional | Weight | 0.4kg |
| Response Time | ≤ 250msec | Installation Method | 35mm Rail Installation |
| Auxiliary Working Power Supply | AC/DC220V, etc. | Operating Temperature | -5℃ ~ +45℃ |
| Insulation Resistance | ≥ 100Mohm, DC 500V | Storage Temperature | -20℃ ~ +75℃ |
| Output Ripple | < 0.2% (Peak-to-Peak) | Relative Humidity | <80% |
| Temperature Influence | Within the standard temperature use range, for every ±20℃ change, the allowable error change amount is ±0.2%, ±0.5% | Protection Grade | IP20 |
Ordering and Model Selection（订货选型） *Please send the inquiry email containing specific product requirements (such as model, quantity, technical parameters, etc.) to the designated email address salina@kejia.com.
（请将包含具体产品需求（如型号、数量、技术参数等）的询价邮件发送至指定邮箱 salina@kejia.com）
