ND802B-3H Microcomputer Relay Protection Calibrator

Product Introduction

       The ND802B-3H Microcomputer Relay Protection Test Set uses the user-friendly Windows XP operating system with an intuitive human-machine interface for simple and fast operation. For user convenience, a large number of keyboard shortcuts are defined to enable "one-key operation." Equipped with a high-performance embedded industrial control computer and a large-screen high-resolution color TFT LCD display, it provides rich and intuitive information, including the current working status of the device, next-step prompts, and various help messages. It comes with an ultra-thin industrial keyboard and touch mouse, allowing operations to be performed just like on a regular PC via keyboard or mouse. With an external USB interface, data storage and software maintenance are convenient. It can complete all test items without requiring additional external devices, automatically displaying and recording test data, and generating vector diagrams and characteristic curves. Utilizing a high-performance D/A converter, it produces waveforms with high precision, excellent linearity, and superior transient response and amplitude-frequency characteristics. Waveform accuracy and other specifications are guaranteed across the entire measurement range.

Product Features

☆ Simultaneously outputs three-phase current and four-phase voltage.
☆ High-performance industrial control computer, 10.4" large-screen color LCD display, built-in ultra-thin industrial keyboard, pre-installed Windows operating system, can be connected externally to a laptop or desktop computer.
☆ Test software can automatically complete tests for differential protection, line protection, reclosing, under-frequency, synchronization, harmonics, automatic transfer switching, oscillation, fault replay, etc. Can be externally connected to GPS for pilot protection tests.
☆ Can store test data in real time, display test graphs, and automatically generate test reports.
☆ Equipped with multiple USB interfaces for convenient data storage and software maintenance.
☆ The device comes with 110V and 220V DC power supplies to power protection devices.
☆ The device has self-protection functions, a rationally designed heat dissipation structure, reliable and comprehensive protection measures, supports output waveform monitoring, and features fault self-diagnosis and lockout functions.

Technical Parameters

☆ AC Current: 3 channels, 40A per phase, accuracy ≤0.1% 
☆ AC Voltage: 4 channels, 125V per phase, accuracy ≤0.1% 
☆ DC Current: 3 channels, 0 to ±10A per phase, accuracy ≤0.2% 
☆ DC Voltage: 4 channels, 0 to ±150V per phase, accuracy ≤0.2% 
☆ Phase: 0 to 360°, accuracy ≤0.1° 
☆ Frequency: 10 to 2000Hz, accuracy ≤±0.005Hz 
☆ Harmonic Overlay: 2nd to 20th order 
☆ Digital Inputs: 16 channels 
☆ Digital Outputs: 8 pairs 
☆ Dimensions: 420mm × 190mm × 470mm 
☆ Weight: 22kg