Gcjh-z has achieved real-time detection of the positive, negative, polar, bipolar, interpolar, interpolar and 200-k network failures, and a 100-per-cent correct alarm rate for the network, while the direct-flow power system continues to power, allowing the detection and safe and reliable resolution of the network failure. The elimination of the in-station loop hazard has significantly reduced the frequency of irregular flow within the station and has significantly improved the ability of transformers to withstand system accidents。
Product parameters
Main technical indicators of the analyser
Use environment
Work power: dc40v-300v
Ambient temperature: 20°c-55°c
Relative humidity: 0-90%
Direct current voltage measurement
Direct current voltage measure range: 0-300v
Direct current voltage measurement resolution: 0. 1v
Direct current voltage measurement accuracy: 0. 2%
Exchange voltage measurements
Exchange voltage measurement range: 0-300v
Exchange voltage measurement resolution: 0. 1v
Communication voltage measurement accuracy: 0. 5%
Insulation resistance measurement
Insulation resistance measurement range: 0-999. 9k
Insulation resistance measurement resolution: 0. 1 k
Insulation resistance measurement accuracy: 5%
Signal banding range: 0, 0. 25, 0. 5, 1 ma, 2 ma
Signal frequency reconciliation range: 0. 125, 0. 25, 0. 5, 1. 0hz
Detectable ring type: positive ring, positive and negative ring, negative ring, negative ring and multiple loops
Detect the grid barrier range: within 200 k
Signal wave type selection: sine, square
Working mode: force signal start, automatic signal start
Display medium and resolution: tft, 320X 240
2. Key technical indicators for detectors
Insulation resistance measurement
Insulation resistance measurement range: 0-999. 9k
Insulation resistance measurement resolution: 0. 1 k
Insulation resistance measurement accuracy: 10%
Spectrum analysis range
Number of spectrum analysis channels: 1
Spectrum analysis band range: 0. 125-12. 5hz
Frequency resolution: 0. 125 hz
Current waveform display cycle: 8s
Testable feeder current range: 0-2a
Current measurement range: 0-200 ma
Current measurement resolution: 0. 01 ma
Display medium and resolution: tft, 320X 240
3. Wireless communication technology indicators
Rate: 2 mbps, which significantly reduces collisions in wireless transmission due to short air transmission times
Multi-frequency: 125-frequency points to meet multi-point and high-frequency communications requirements
Super-small: inner 2. 4ghz antenna, small size, 15x29mm (including antenna)
Low utility: rapid air transmission and start-up times when working in response mode communications have significantly reduced current consumption。
Product characteristics
Device function:
(i) system-to-geovolve measurement function, instrumentation-to-measure system-to-measure, active-to-ground voltage, negative-to-ground voltage, system voltage, capable of achieving the monitoring range of 0-300 v
(2) system insulation resistance measurement function, instrumentation capable of measuring systems that are resistant to geoinsulation, negative resistance to geoinsulation, balancing bridge size detection, and measuring range 0-999 k
(3) exchange string detection function, which enables instruments to determine communication string failure in a direct flow system, and to measure the condensed exchange voltage values in a direct flow system, with an exchange voltage measurement range of 0-280 v
(4). Ring detection and positioning functions, where instruments detect a variety of network failures in the two main lines, including orthopolar, negative, bipolar and hexapolar rings, and the location of network failure points can be achieved through wave-shaped and directional displays
(5). The device has a modem, fm, signal wave-form selection function that enables the location of high resistance ring failure。
(6). Secondary insulation resistance measurements and insulation failure locator functions, instrumentation to measure the resistance of each branch to the earth's insulation size, and the positioning of insulation failure points by wave-shaped display and direction
(7). Signal spectrum analysis function, which is designed to achieve current signal spectrum analysis through rapid fft transformation, effectively extracting signal band values from detected signal frequencies and increasing detection accuracy
(8). The current watch function, where the device can be used for high-precision current meters with a current measurement resolution of 0. 01 ma;
(9). Wave curve displays and directional displays, where the screens are shown in wave curves in the form of a detector for the detection of a secondary path, to facilitate rapid and accurate detection of failure points by users, and to indicate the direction of the failure points in the event of a network failure。
Equipment characteristics:
(1) high-reliability design
The device is based on a 32-bit imported microcontroller master system, hardware design is carried out in strict compliance with the relevant standards of electrical and electromagnetic compatibility, and the reliability of the device and the detected equipment is guaranteed internally by multiple redundancy。
(2) precision selection
The device uses a high-precision straight-flow meter as a signal collection unit, the electro-voltage sample uses a high-precision imported module conversion chip, and the measurements of voltage and resistance are accurate
(3) humanistic human interaction noodles
Both the "analyst" and "detector" use the tft lcd screen to provide users with access to information
The operation is simple and fast, and only one start-up key is required to achieve the detection of the different bypass roads
The test results are visual and can be presented to users in a variety of displays, including on-site or off-site, wave curves, insulation levels, resistance, leaking current size, directional information, etc。
(4) smart detection and identification system
An "analyst" can automatically recognize the voltage level of the system
An "analyst" can determine the type of network failure
The "detector" is not affected by detection distance once synchronized with the "analysis" information
(b) “detector” during testing, the clamp gauge can be used to clamp single power lines or multiple power lines to improve detection efficiency
When the “detector” test is completed, the direction of the failure point relative to the test point is determined if the feeder is circled or insulated。
(5) full test functionality and trouble management capability
A wireless digital transfer module is built between the "analyst" and the "detector" to communicate, to test functionality and display information to handle various types of network and insulation failures in the direct flow system。
The "analyst" has the function of selecting multiple combinations of "banding" "fm" "wave" work models that can be adapted to complex applications。
(6) high security
The device uses a micro-level detection signal to match the high-resolution direct-flow detection clampometer for failure detection and positioning, with no impact on the direct-flow system。
