Description
A complete set of equipment includes a variety of different types of relays and protection, this platform can accomplish relay structure, working principle and characteristics, power grid relay protection, main equipment protection, automatic device and relay protection, electric secondary control circuit, relay protection system calibration and debugging, relay protection equipment abnormal accident treatment and training projects.This platform organically combines all kinds of power supply, instrument, load, protective relay and so on, and has complete supporting facilities.
Personal safety protection function and equipment safety protection
Meet the national standard, the power input end of the experimental device is equipped with current leakage electrical appliances, the control screen, outside or strong power output leakage phenomenon, immediately alarm and cut off the main power supply, to ensure the safety of the experiment.
The closed safety experimental wire is adopted to avoid electric shock accidents caused by students’ two-hand mode.
The power supply of the control panel is controlled by the contactor through the start and stop buttons.
Experimental desk structure:
The experimental desk is made of high-quality cold-rolled steel plate, with double-layer matte and dense spray structure. The table is fireproof, waterproof, wear-resisting and high-density board. The structure is firm, the shape is like rectangular structure, and the model is beautiful and generous.
Experimental desk structure: The experimental desk is made of high-quality cold-rolled steel plate, with double-layer matte and dense spray structure. The table is fireproof, waterproof, wear-resisting and high-density board. The structure is firm, the shape is like rectangular structure, and the model is beautiful and generous.There are two storage cabinets with door locks and a large drawer for storing tools and data.The desktop is used to install the power control panel and provides a spacious and comfortable working surface.The training table is also equipped with four universal wheels (with self-locking function), which are easy to move and fix and conducive to the construction of the training base.
Power board: the module provides the main power output, which is controlled by the contactor through the start and stop buttons. The voltage regulator outputs 0-380V/1.5kVA continuously adjustable AC voltage, and has a current-type leakage protector. In case of overcurrent or short circuit, the power is automatically cut off to protect the voltage regulator.Three – phase AC voltage output monitored with pointer AC voltmeter.
Electric stopwatch: 417B digital;Measurement range: 0.0001s-9999.9s, measurement error: ≤5×10-5±1 tail digital display: 5-bit LED red digital tube.
Dc adjustable power supply: DC adjustable 0-220VDC/2A has overcurrent, overload and short circuit protection
Three-phase AC generator: AC voltage: U phase, V phase, W phase 0-250V AC current: U phase, V phase, W phase 0-10A electron phase shift: -90℃-+357℃.
Multi-function intelligent power meter: it can communicate with the computer through the communication interface and collect the measured value of the meter in real time.It shall have the following functions: comprehensive measurement of more than 30 kinds of three-phase/single-phase electric quantity: phase/line voltage, current, active power, reactive power, apparent power, power factor, frequency, etc., measurement of active power (kWh), reactive power (kVARh), standard CT, PT input, rS-485 communication interface (optical isolation) and other functions.
Equipment features and functions
Relay characteristics training part of the technology
Several commonly used relays (current, voltage, intermediate, time, signal, power direction) were selected as the training contents in this experimental device.The main purpose of this part of the training is to make the trainees master the structure and operation principle of these commonly used relays, the specifications and technical data of relays, the inspection method of relays and inspection items, purposes and so on.
Voltage, current, intermediate relay are all convex type, installed on the surface of the panel, students have a complete understanding of its actual form, while other manufacturers are installed in the box, students can only see the graphic symbol on the panel, not intuitive.And the experimental relay adopts the design of hanging plate, which can be increased or decreased according to the teaching requirements.
