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Installation & Application（安装应用） The NKB-21D series AC voltage transmitter is widely applicable for monitoring real-time operation parameters of AC current in power grids, such as substations and power plants. With 35mm DIN-rail mounting, its proportional analog DC output can be received by conventional RTUs or other acquisition devices, serving as a front-end AC power conversion equipment for automatic telemetry systems.
Product Dimension Drawing
Product Installation Diagram
Technical Parameters（技术参数） | Model | NKB-21D | Withstand Voltage | 2KV |
| Accuracy | ±0.5% | Housing Material | ABS |
| Rated Current Input | Optional: 0~60V, 0~120V, 0~300V, etc. | Dimensions (W×H×D) | 100×22×112 (mm) |
| Output Range | Optional: 0~20mA, 4~20mA, 0~5V, 0~10V, 1~5V, etc. | Weight | 0.2kg |
| Auxiliary Working Power Supply | AC220V, 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 ±0.5% | 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）
