Products
Products
Installation & Application（安装应用） The NKB-21S series AC voltage transmitters are widely used for monitoring real-time electrical parameters of AC voltage in power grids such as substations and power plants. Mountable on 35mm DIN rails, their proportional analog DC outputs can be received by conventional RTUs or other acquisition devices, serving as front-end AC power conversion equipment for automatic telemetry systems.
Product Dimension Drawing
Product Installation Diagram
Technical Parameters（技术参数） | Model | NKB-21S | Withstand Voltage | 2KV |
| Accuracy | Optional: ±0.2%, ±0.5% | Housing Material | Flame-Retardant ABS |
| Rated Voltage Input | Optional: 0~60V, 0~120V, 0~300V, etc. | Dimensions (W×H×D) | 55×75×120/110×75×120 (mm) |
| Output Range | Optional: 0~20mA, 4~20mA, 0~5V, 0~10V, 1~5V, etc. | Weight | 0.4kg |
| Auxiliary Working Power Supply | AC220V±15%, 4VA, etc. | Mounting Method | 35mm DIN Rail Mountable |
| Working Frequency | 50±5Hz | Working Temperature | -5℃ ~ +45℃ |
| Output Ripple | <1% (Peak-to-Peak) | Storage Temperature | -20℃ ~ +75℃ |
| Input Power Consumption | Current<0.5VA, Voltage <0.5VA; *Add 1VA if self-powered | Relative Humidity | <80% |
| Temperature Influence | Within the standard temperature range, for every ±20℃ change, the allowable error variation is ±0.2%, ±0.5% | Protection Class | 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）
