An overview of the outdoor high-voltage live display locking device is mainly used in substations and above, power plants to forcefully lock the line-side grounding blades of tie lines between stations, for live body monitoring in complex power lines, and for power distribution network automation. The monitoring center provides monitoring signals for equipment operation. The product has complete functions, is safe and reliable, has a flash display, audible alarm, self-check and starts a forced locking circuit function, has obvious directionality, high sensitivity and reliability. The high-voltage live display locking device can detect whether the network (equipment) is charged at a safe distance from the live equipment. It can be used in conjunction with anti-error devices such as electromagnetic locks, mechanical program locks, and microcomputer locks to implement forced locking. It is ideal for preventing electrical misoperation on outdoor electrical networks or equipment. safety devices.
2. Working principle
) This device uses the electric field coupling principle between the high-voltage electric field and the sensor to induce charge on the sensor and form a current signal. This signal is processed by the processor and drives the indicator light and latching loop. Since the sensor does not come into contact with live objects, it can perform inductive (non-contact) measurements at a safe distance. No power outage is required during installation and maintenance. No partial discharge test is required. It is simple and convenient, with low maintenance costs and long service life.
) When the primary circuit under test is powered, the three-phase indicator light flashes and the unlock indicator light goes out and a forced locking signal is output (the contact is in the normal state and the microcomputer locking interface has no electrical signal output).
) When the primary circuit under test is not powered, the three-phase indicator lights are off and the unlock indicator light is on and the locking signal is released at the same time (the contacts are transient and the microcomputer locking interface has an electrical signal output, so the equipment can be operated.
) This device adopts phase split control to flash the alarm when any one phase is charged and outputs a forced locking signal. When the display loses working power, the display outputs a forced locking signal to maintain the locked state
Three automatic timely fault detection and self-test functions
This The device has the function of automatically detecting faults in a timely manner. When the sensor is open or short-circuited or the sensor cable is damp, the power indicator light flashes and the fault phase indicator light flashes and a forced locking signal is output. Press the self-test button to automatically detect each functional module of the sensor and display. If the device is normal, the three-phase indicator light flashes and the unlock indicator light goes out and a forced locking signal is output. If the device is faulty, the corresponding phase indicator light does not light up.
Four anti-pollution levels
The sensor has a fully sealed structure and is coated with long-lasting anti-fouling flash paint. The circuit board has been treated with moisture-proof treatment. The display box and installation components are made of all stainless steel materials, which are rain-proof, moisture-proof, dust-proof and rust-proof. The protection fully meets the anti-corrosion and moisture-proof requirements.
Three major product series of the five companies
Safety and error prevention] Program lock | High voltage live display device | Mistake prevention electromagnetic lock | High voltage short-circuit grounding wire | Mechanical locking
Electrical components] High voltage isolation switch | Household Internal high-voltage grounding switch | Vacuum circuit breaker | High-voltage vacuum contactor | Single-phase vacuum contactor
Complete sets of electrical appliances] Central cabinet | Box-type switch cabinet | Switch cabinet | High-voltage vacuum ring main unit | Box-type substation
Related products Mechanical five-proof program lock (etc. program lock) Indoor electromagnetic lock/Indoor high-voltage live display device Box-type cabinet mechanical locking device Outdoor live display locking device Outdoor electromagnetic lock High-voltage vacuum circuit breaker High-voltage vacuum circuit breaker Outdoor high-voltage vacuum Circuit breaker high voltage vacuum contactor indoor high voltage isolation switch grounding switch short circuit grounding wire indoor high voltage switch cabinet transformer
DXW outdoor high voltage live display locking device