Qingdao hua tshou bao electric co. Ltd. (pindu huabau electric co. Ltd., qingdao city) was established in 1987 as the backbone of the china-united states cooperative group; in 1992, the company, in partnership with the united states company cfb, and with the direct participation of the chinese-american dr. Xu seung-fang wang jianhua, developed a complex of enterprises that produced and sold a high-pressure test device and secondary electrical protection test instrument, analytical instrument, and school schedule instrument together.... The product was sold over the years to more than 30 autonomous provinces and cities of the country with hard quality and after-sale services, and earned the approval and trust of a wide range of electricity users.... The combination of modern technology and classical theory has provided you with not only a good product, but also a good assistant of value。
Qingjiang huabao electrical specialization translating bridge inspection unit, backway resistance tester checking device, media depletion factoring standard, mega-eu meter calibration unit, subsurface resistance resistor calibration device, oil resistance checker, intersensor tester checker, large power flow generator, battery tester, symphony intersonance resistance tester, repeated electric protection tester, straight-technology tester, direct-to-technology high-trestrial incidencer, intersension integrated characteristics tester, ultra-low-frequency high voltage generator, transformer-to-temporal tester, etc., is a national grid company, measuring firm, surveying firm, provider, main co-operater for power generation units, certification and recognition of the use of products at various levels of electrical power. Hotline: 186+5322+5978 qq: 1123+134+968
Direct current constant current current, process controlled constant current pressure, smart direct current power, preset smart current source, breaker to detect current source, direct current current steady source
The hb-zly series of direct current voltage currents is a customized, voltage, power-orientated, closed-ring feedback source developed by qingdao huai-bou electric co. Ltd. (tingdao city of pingdu huabao electric co. Ltd.) in conjunction with hardware and digital circuits and software revision principles, based on relevant national standards and testing the actual needs of corporate clients。
Tests or calibrations for direct current meters, breakers, direct current voltage meters, straight circuit breakers are widely used。
Hb-zly220v20a, micro 186+5322+5978, qq1123+134968
Hb-zly220v20a, micro 186+5322+5978, qq1123+134968
I. Performance characteristics
Rules: output voltage 0-220v, output current 0-20a (other specifications may be customized)
2. Voltage current preset: panel with its own preset button to preset voltage current values
3. Pressure smooth current: voltage current values are continuously adjustable from zero to nominal, and steady currents are automatically converted
4. Overpressure protection: after protection the machine locks itself, reboots the machine automatically unlocks
5 overflow protection: rated current output overload protection, short circuit protection (closing output after short circuit, matching)
6. Short-circuit protection: permission to open short- and long-term short- and short-circuits in any state
7. Short-circuit alert: when the output is short-circuited, the power flash alert
Output display: voltage current table is led display
Pulse work: quality controllers form a direct-flow pulse power source (optional)
Iq: smart power (selection) that can be connected to a computer through rs232 or rs485 or can to form a computer-monitored power supply
11, simulation signal relays: users can control and read back the power output voltage and current (selection) using 0-5v, 0-10v or 4-20ma signals
Special customization: provision of special specification power size design, special power customization (advance declaration)
Ii. Key technical indicators
Highest output voltage: close to 0v-220v (other specifications can be customized)
2. Maximum output current: close to 0a-20a (other specifications can be customized)
3. Consistency range: 0v-220v (other specifications may be customized)
4. Constant flow range: 0a-20a (other specifications may be customized)
5. Output voltage, output current and overpressure setting: rotation code device
6. Auto-jected flow
7. Steady pressure accuracy:
Source effect = 0. 5% rating (output voltage rate caused by input of power voltage change = 10%)
Load effect = 0. 5% (output voltage rate caused by power output current changes from zero to nominal)
8. Fluid accuracy:
Source effect = 0. 5% rating (output voltage rate caused by input of power voltage change = 10%)
The load effect is 0. 5% (output current variability caused by changes in output voltage from zero to nominal values)
9 the output texture: 0. 5% at steady pressure (valid value, measured at rated output)
10. Protection of circuits: output short circuits, overpressure, overload protection, heat protection
11. Display mode: positive 4 or 5-bit led digital tube display
12. Display resolution: by specification model
13 show error: ≤1 ±1 word (20%-100% range)
14. Program control (optional function): power provides rs485 interfaces and communication protocols that connect to computers to form intelligent power; power start-up, stop, value setting, real-time reading of voltage, current values, working state, etc. Are performed through the 485 interface。
15. Modus operandi: long, full and continuous work
16, time drift: ≤0. 5% rating (change in output voltage caused by continuous power work of more than 8 hours)
17, temperature drift: ≤0. 05% rated value/°c (output voltage rate due to changes in ambient temperature within the ambient temperature of power use)
18. Input voltage: 220 v ± 10% single-phase 50 hz/60 hz
19 frequency: 50hz/60hz
Insulation electrical resistance: 20m
21. Pressure resistance: ac1500v 60s
22. Use of the environment: indoors
Supply: direct current constant current constant current source
A relay protection test vehicle developed in 1993 became a recommended product of the ministry of electricity and entered the periodicals sponsored by the ministry of electricity at that time as a pole product for the electrical reinsurance experiment. In 2008, production in cooperation with an exporting and importing company provided a large number of products to countries or regions in south-east asia and received the praise of export distributors. The integrated sensor test instrument for ships, developed in cooperation with a shipyard, was accepted by the military engineering department and obtained an online certificate from the equipment department of the liberation army. The inspection of products such as the gas relay calibration machine, the large current generator, the relay protection tester, the transformer oil resistant tester, which was developed for production in 2009 for an oil field, the acceptance of the oil field power company, the acquisition of an oil field supplier’s netting certificate, and the development in 2010 of a public-free multi-road anti-disruptive cable core pair, through the use and acceptance of the communications sector, the power supply sector, railway departments, and various large mining groups, addressed the disadvantages of traditional cables, which had to have a public line in order to be used。