Liaoning Benxi Insulation Monitor Supply

Ground detection application of oil drilling rig electronic control system 1
The power configuration, output characteristics, control operation and protection functions of the oil drilling rig electronic control system meet the operating parameters, performance and drilling process requirements of oil drilling rigs at various depths. Explosion-proof, shock-proof, moisture-proof and fire-proof measures are adopted to meet the requirements for safe operation. The system failure downtime rate that affects drilling operation time is less than. Generally, the diesel generator set is connected to the grid through the control cabinet of the generator set in the system, and AC power is output to the AC busbar
. The drive system adopts a fully digital vector control AC variable frequency speed regulating device. The rectifier unit converts the AC power on the AC busbar into DC power, outputs it to the public DC busbar, and then the inverter unit converts the DC power on the DC busbar into AC power with continuously adjustable voltage and frequency, using a one-to-one method. The control mode drives the AC variable frequency motor.
In this process, a fault ground detection system is required. A fault ground detection system is required to detect AC ground faults. In addition, one ground fault test button is required (mainly used to determine whether the indicator light is burned out when the ground fault indicator light is on). A grounding indication is also required. For this purpose, we designed and selected the second-generation insulation monitor model launched by Dongguan Qianbo Electronic Technology Co., Ltd. This type of insulation monitor has greater versatility, applicability, and more powerful functions. It can be used in AC and DC environments, and can be applied to power grid environments with larger distributed capacitance. It can completely replace foreign brand insulation monitors and is the development of our company. In view of the characteristics of mining, metallurgy and other power grids with large distributed capacitance, high grid voltage, and complex grids, compared with the early insulation monitors, a new independent alarm point has been added, which has reached an independent insulation resistance setting value and can alarm output, including remote testing. The reset function and analog output function completely replace the advanced European and American imported models and can be used in AC and DC power grids.
Type technical parameters
Positive control power supply
Input voltage ~ () or ~ (choose one of the two)
Approximate power consumption
Test network
Power grid Voltage~or~
Set alarm value alarm~alarm~
Internal AC resistance value〉
Internal DC resistance value〉
Internal test voltage +/
Test current ( )
Allowed noise DC voltage
Distributed capacitance
Running time line ground capacitance under line ground capacitance
Measurement accuracy %
Output
Contact group independent The normally open contact corresponds to the group alarm signal
switching capacity, or
energizing capacity, or
analog output~corresponding~ (can be customized according to customer needs)
operating data
Operating mode continuous operation
Operating temperature range.+
℃
Pollution level

Burst immunity/
Control between power lines Surge voltage/
Surge voltage between control power line and ground/
Conducted disturbance immunity
Power frequency magnetic field immunity
Radiated emission limit value level
Degree of protection
Cover/
Terminals/
Technical data
Wiring, high voltage wires,
Wires
Other terminals. Above wires
Install on rails or use long screws (recommended)
Weight approx.

The insulation monitor is used to monitor the insulation resistance to ground in AC and DC ungrounded systems. When the grid ground insulation resistance is lower than the set value, the insulation monitor relay alarm outputs. This insulation monitor can be equipped with an optional display instrument to indicate the current system insulation resistance value. This insulation monitor has the advantages of high reliability, good interchangeability, high measurement accuracy and easy installation and use. It is widely used in ships, mines and other fields. The insulation monitor can not only monitor the real-time insulation resistance of the system online, but also monitor the static insulation resistance of the system (when the system is powered off).
Positive