PJG3-400~1250/10(6)Y Mining explosion-proof intrinsically safe permanent magnetic mechanism high voltage vacuum distribution device
Application
The product is mainly used in coal mine with explosive dangerous gas (methane mixture). The power supply system with rated voltage of 10 kV, 6 kV, rated frequency of 50 Hz and non-direct grounding of three-phase AC neutral point is used to control, measure and protect the power supply system with rated voltage of 10 kV, 6 kV, rated frequency of 50 Hz and non-direct grounding of three-phase AC neutral point.
Technical Parameters
Parameter
Value
Unit
Rated voltage
6, 10
KV
Rated current
400, 500, 630, 800, 1000, 1250
A
Rated frequency
50
HZ
Rated short-circuit breaking current
31.5
KA
Rated short-circuit making current
80
KA
Rated peak withstand current
80
KA
Allowable operating frequency
180
Times/h
Short circuit protection action time
≤100
MS
Mechanical life
100000
Times
Dimensions(W*D*H)
1646*1666*1358
MM
Intrinsic safety parameters Uo
13.5
V/DC
Intrinsic safety parameters Io
6.5
MA
Structure description
The equipment shell is rectangular, quick open door structure, movement trolley push-pull structure.
The equipment is equipped with an independent small wiring cavity, and the high voltage can be safely connected to the control line without power outage.
It has the function of manual closing and manual switching.
The movement trolley is pushed forward, the guide can be accurately positioned, the movement car is interchangeable, the consistency is good, and the use is convenient.
Technical advantages and functional characteristics
The equipment adopts a bistable permanent-magnet high-voltage fixed-seal type circuit breaker, and the rated breaking current reaches 31.5 KA.
The equipment conforms to the five prevention operation rules of the ground switchgear.
The motor core trolley adopts intelligent servo control, which can automatically plug in and exit the field servo control car or the ground remote control car.
The device WTG-800 high voltage switch microcomputer integrated protection device, using high performance microprocessor as the protection and monitoring core, has strong data processing ability, fast operation speed, stable and reliable operation.
The human-computer interaction interface uses a large size Chinese color liquid crystal screen, which can intuitively and clearly reflect the protection parameters of the current system and the running state of the equipment, and the operation is very convenient.
It has standard RS485 communication interface, or CAN bus interface, multi-channel optical fiber interface, multi-channel network port, and video interface, provides standard communication protocol, has four remote functions, is convenient to set up field monitoring system, and is convenient to realize ground centralized detection and monitoring; it can set up distance and near control parameters, control far and near, lock each other between far and near software and hardware, etc., to realize the unattended substation.
Multi-point wireless temperature measurement control, multi-point arrangement of important temperature measuring point sensors, digital display monitoring, and alarm.
Video images of isolated fracture surface of equipment trolley can be observed on the ground and underground, and real-time monitoring operation can be carried out.
It has the protection function of current anti-overstepping stage.
Support double-circuit power supply. When the switch is powered off, the other one is automatically put into operation. The equipment can still perform servo operation.
The equipment can measure active power and reactive power electroplating in stages, and distinguish between high, peak, flat and valley.
The function of voltage loss delay tripping can be selected to avoid large area power outage and gas overrun accident when the mine power grid is out of power at the moment of failure or lightning strike.
Optional heating dehumidification function.
Detailed fault parameters can be displayed, recorded, and queried to help with use and maintenance.
With front door analog fault test function.
Selective input and shutdown of the protection function.
Random fine tuning of measurement parameter error and calibration function.
Remote control intrinsically safe operation circuit.
Frequently Asked Questions
QWhat is the main application of this high voltage vacuum distribution device?
It is primarily designed for use in coal mines containing explosive dangerous gases (methane mixture). It controls, measures, and protects power supply systems operating at a rated voltage of 6 kV or 10 kV, a rated frequency of 50 Hz, and utilizing a non-direct grounding three-phase AC neutral point.
QWhat are the key technical parameters for the circuit breaker?
The device features a bistable permanent-magnet high-voltage fixed-seal type circuit breaker. It has a rated short-circuit breaking current of 31.5 KA, a rated short-circuit making current of 80 KA, and a mechanical life exceeding 100,000 operations.
QWhat safety protection mechanisms are integrated into this system?
The system features current anti-overstepping stage protection, voltage loss delay tripping (to prevent wide-area outages and gas overrun accidents during grid faults), selective protection shutdown options, and multi-point wireless temperature monitoring with digital displays and alarms.
QHow does the push-pull trolley structure function?
The system utilizes a rectangular, quick-open door shell layout with a push-pull movement trolley structure. The trolley can be guided and accurately positioned via intelligent servo controls (local or ground remote). All movement cars are interchangeable and feature high consistency for easy maintenance.
QDoes the device support dual-circuit power supply and automatic switching?
Yes, it fully supports double-circuit power supply. If one switch loses power, the alternative switch is automatically put into operation immediately, ensuring uninterrupted servo operations for key equipment functions.
QWhat communication protocols and remote capabilities are supported?
The system is equipped with standard RS485 communication, CAN bus, multi-channel optical fiber, and network ports. It supports standard industrial protocols, provides four remote monitoring functions (centralized ground control), and allows real-time video monitoring of the trolley's isolated fracture surface.
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