Scope of application
Intelligent distributed (scattered) DTU - Spacer Unit This TR-6200 distributed distribution automation terminal spacer unit (hereinafter referred to as the spacer unit) adopts digital signal processing technology, high-speed industrial network communication technology, embedded industrial chipset, and multi-task real-time operating system. It offers strong stability, high reliability, good real-time performance, wide environmental compatibility, and powerful functions. In conjunction with ring network switches, it can be combined into intelligent distribution, local FA (voltage-time-based, voltage-current-time-based), conventional protection, and centralized distribution network automation functions, enabling various distribution network automation solutions. The device works with outgoing line switches, branch switches, etc., enabling fault localization, fault elimination, and restoration of power supply to non-fault areas in distribution lines. It is a microcomputer-type distribution automation terminal device integrating telemetry, remote signaling, remote control, protection, and communication functions.
Basic functions
The unit uses a common unit chassis made of galvanized steel plate, with a molding thickness of no less than 1.0mm, and the chassis color is matte black; The text and manufacturer logo on the front panel area are directly silk-screened, with black font and white color. RJ45 connectors require reeds, shielding casing made of brass with nickel plating.
| 4. Remote functions | Content |
| Telemetry | Supports measurement of 3 phase voltages, 1 zero-sequence voltage, 3 phase currents, and 1 zero-sequence current, capable of calculating active, reactive, and power factors |
| Sent from afar | Supports 7-channel remote signal input |
| Remote control/protection output | Supports one-way remote closing and separation, one-circuit protective closing, and one-way protective switching |
| Remote transfer | It supports direct installation of set values from the master station, or allows the master station to use a common unit to set values for the interval units |
| Line loss measurement | Designed with a built-in line loss module, capable of calculating line loss and supporting upstream to the main station |
Protection function
| Protection function | Content |
| Current protection | Three-stage overcurrent protection |
| Three-stage zero-sequence current protection | |
| Phase overcurrent and zero-sequence overcurrent acceleration protection | |
| Hand and remote acceleration trips | |
| High-current interlock trip | |
| Current reload | |
| Current overload | |
| Current exceeds limit / overload | |
| Zero-sequence current exceeds limit | |
| Inrush Stream Recognition | |
| Ground protection | Small current grounding alarm or trip based on transient recording |
| Zero-sequence overvoltage alarm or tripping trip | |
| Synchronization function | High- and low-frequency de-connection (optional tripping or alarm available) |
| Synchronous Ring Combination (Voltage Difference/Frequency Difference/Phase Angle Difference) | |
| Reclosing function | Multiple reclosing (selectable number of times, 3 times) |
| Reclosing the gate to check for no pressure | |
| Double-close gate inspection is conducted simultaneously | |
| Voltage protection | Voltage and current limit alarms |
| Zero-sequence overvoltage tripping or alarm | |
| Overvoltage/undervoltage alarm or tripping | |
| Non-electrical protection | Supports configuring 6 channels of non-power trip/alarm/close (optional functions) |
