product overview
The GBL-200 series microcomputer protection device is a new generation of microcomputer based relay protection equipment specially developed by our company to meet the requirements of miniaturization of modern switch cabinets. It provides complete protection functions for primary equipment such as overhead lines, cable lines, transformers, motors, capacitors, PT, etc. with voltage levels of 35KV and below. The product's appearance has been carefully designed, compact and exquisite, and can be directly installed on various small space ring main switch cabinets such as solid cabinets and gas filling cabinets.

Product Features

Adopting our company's new microcontroller development platform, the bus does not produce chips and has good anti-interference performance.
Adopting a unified hardware framework and software platform, with good product consistency.
The device adopts a fully sealed aluminum alloy structure, with strong anti-interference ability, small appearance, and easy installation
Easy.
The protection function configuration is flexible and complete, and various protection functions can be activated or deactivated through control words.
The analog input, switch input, power input, and communication interface parts adopt transformer isolation
The anti-interference measures of isolation, photoelectric isolation, and TVS protection make the anti-interference ability of the device particularly strong
Strong.
The device has a complete self checking function, which can reliably lock and protect the device when it is found to be working abnormally
Ensure that the device does not malfunction.
Using a dedicated clock chip, supported by a separate crystal oscillator and equipped with a backup battery, the clock can operate even when
The device can still operate correctly even after power failure, enabling it to accurately record various fault information.
The device has a three-level watchdog, an external hardware watchdog, a CPU hardware timer watchdog, and
Software watchdog ensures that the device will not crash under any circumstances.
Equipped with a high-speed optoelectronic isolation RS485 communication interface, the communication is stable and reliable, and provides users with
An open communication protocol facilitates the implementation of integrated automation systems.
The software in the device adopts modular design, with multiple redundancy measures, and has undergone a long period of time
On site operation test shows that the program runs stably and reliably.
● Adopting a fully Chinese LCD display interface, multi-layer menu display, rich information display, human-machine interface
Friendly, debugging work can be completed without complex training.

Technical Parameter

1. Working environment conditions
● Environmental temperature: -20 ℃ -+60 ℃ ● Relative humidity: 5% -95%
● Atmospheric pressure: 86-106Kpa
2. Main electrical technical parameters
● Working power supply: AC/DC85~265V ● Allowable deviation ± 20%, ripple coefficient not exceeding 5%
● AC current: rated 5A or 1A (specify when ordering)
● AC voltage: 57.7V or 100V (specify when ordering)
Power consumption: DC circuit not exceeding 5W, AC circuit not exceeding 0.5VA
Rated frequency: 50Hz
● Measurement range: Phase current 0.1IN~20IN ● Zero sequence current: 0.1A~6.25A
Voltage: 5V~160V
Measurement accuracy: current level 0.5, voltage level 0.5
● Protection action time: At 1.5 times the set value, the inherent protection action time should not exceed 35ms
● Input circuit: DC 24V, 5mA (provided internally by the device)
● Open contact: Can continuously connect AC/DC220V, 5A current (pure positive load)
3. Insulation resistance, dielectric strength, and impulse voltage
● Insulation resistance: ≥ 50M Ω ● Dielectric strength: 2KV, 50Hz, 1min
● Impulse voltage: 5KV (1.2/50) μ s
4. Vibration
Comply with the relevant provisions of 3.2.1 and 3.2.2 in IEC60255-21-1.
5. Impact
Comply with the relevant provisions of 4.2.1 and 4.2.2 in GB/T14537-1993.
6. Collision
Comply with the relevant provisions of 4.3 in GB/T14537-1993.
7. Anti electromagnetic interference performance
Capable of withstanding frequencies of 1MH and 100KHz, with voltage amplitudes of common mode 2500V and differential mode 1000V
● Attenuation oscillation wave pulse interference test
Capable of withstanding electrostatic discharge test of IEC1000-4-2 standard level IV with a test voltage of 8KV
Capable of withstanding Level III radiation electromagnetic field interference test according to IEC1000-4-3 standard with an interference field strength of 10V/m
Testing
● Able to withstand fast transient interference test of IEC1000-4-4 standard level IV
Can withstand the surge immunity test with severity level III specified in GB/T14598.18-2007
8. Overload capacity
● 2 times rated current: continuous operation ● 10 times rated current: 165
● 20 times rated current: 15