Three-phase relay protection tester product model description and parameters
◠The main rated parameters Rated output Frequency error <±0.01Hz Phase error <±0. 2° Waveform distortion <±0.3% (fundamental wave) Time error <40μs Output frequency 0～1000Hz voltage Allowable range AC220V±10%, 50Hz±10% Ambient temperature Use range 0～40°C Storage range -20 ~ 70 °C Battery communicate with Phase current output (effective value) 0 ~ 30A/phase Triple current output (RMS) 0～90A Phase current allows long time working value (effective value) <= 10A/phase Triple current 90A allows working time <=10s Accuracy <±0.2% Load voltage <20V Maximum output power 250VA/phase Overlap harmonics 0 to 21 times power source communicate with Phase voltage output (effective value) 0 ~ 130V/phase Line voltage output (effective value) 0 to 260V Accuracy <±0.2% Maximum output power 70VA/phase Overlap harmonics 0 to 21 times DC Output range 0 to 300V Accuracy <±0.2% Time measurement Test range 0.1ms to 3600s Switch input Empty contact 1 ~ 20mA, 24V (DC) Potential contact 0-250V(DC) Switch output Empty contact 250V/0.3A(DC) Chassis volume Length × width × height 360mm × 195mm × 380mm Chassis weight Host weight 16kg Gold Gravity Refining Equipment
The STL water-jacketed Gold Concentrator is a kind of gravity separation equipment. It was developed by Changchun Gold Research Institute Co., Ltd. in 1985 and entered the market. At present, it has been used in many domestic and foreign companies. It is suitable for the recovery of single gold in placer gold, vein gold mines and polymetallic mines, instead of mercury plate operations. The addition of large single gold particles in the collected ore before flotation can further increase the recovery rate of gold mines, and it can also be used from gold-bearing mines. Separate single gold from flotation gold-copper concentrate and flotation gold concentrate.
The main indicators of this series of equipment basically reach the level of similar international products (such as Nielsen gold selectors, etc.). Compared with similar equipment at home and abroad, this series of equipment has the advantages of high cost performance, easy operation, and low maintenance costs.
Gold Gravity Refining Equipment,Water Jacketed Gold Centrifugal Concentrator,Centrifugal Gold Gravity Separator,Gold Centrifugal Concentrator Changchun Gold Research Institute Co.LTD , https://www.ccgrizb.com
The main features of this product:
1, the industry's first true color touch screen + key control, so that the operation is more handy This machine uses 8-inch color touch screen, with the self-designed keyboard, so that the operation is more efficient, more handy, at the same time, the program starts testing, automatically close the touch screen to prevent Any misuse.
2. The industry's first built-in single-circuit embedded analog circuit breaker analog circuit breaker is mainly used for the whole set of tests of relay protection devices and replaces the real high-voltage circuit breakers in the projects of standby power source self-propelled devices. The built-in analog device is an accessory product of the microcomputer relay protection test system. In particular, the built-in analog circuit breaker is used for the relay protection test when the high-voltage circuit breakers in newly-built power plants and substations are not adjusted or DC power is not supplied. Not affected by external factors, thereby shortening the commissioning time and improving the efficiency of the test work.
3, embedded host, equipped with ultra-large-scale programmable logic device (CPLD)
The three-phase relay protection tester host adopts high-speed and high-performance embedded microcomputer system equipped with CPLD, which has fast response speed and transmission frequency bandwidth. It can generate high-density fitted sine wave of 500 points per week for the fundamental wave, and the output waveform is smooth and harmonic-free. Component. Due to the large number of output points and the accurate distortion of the waveform through an accurate filter circuit, even at 9th harmonics and 450 Hz, a high density of 55 points per week can be achieved at harmonic output.
4. Single 8-channel D/A simultaneous output adopts 16-bit high-accuracy DAC chip to ensure high precision and good linearity of the fitting waveform. It can output 8 analog signals at the same time to meet all-round testing such as transformer protection and standby power supply.
5, high-precision linear power amplifier, output 5-phase voltage and 3-phase current at the same time meticulously designed voltage and current amplifiers to achieve AC / DC sharing, the output stage uses a unique high-precision linear amplification technology. High accuracy, good reliability, simultaneous output 5-phase AC voltage and 3-phase AC current, each phase AC voltage output up to 130V, 70VA, AC current all-parallel output up to 90A. DC voltage output up to 300V, 130VA.
6. The interface is complete. The interface and test results of the host integrated single-chassis structure system are displayed in full Chinese. All the operation processes are set on the display screen, and the display is intuitive and clear. The device can be operated with a touch screen and keyboard, and an external keyboard/mouse port is also provided. It also provides 2 USB ports and 2 RS232 ports to communicate with external computers and other devices. Only need to exchange 220V power, start to work. Easy to carry, ideal for flow tests and field work.
7, intelligent self-protection using the latest design of the cooling structure to ensure the best ventilation conditions. At the same time, the phenomenon of over-current, over-voltage, overload, short-circuit, over-temperature, and data anomalies threatening the safety of the device itself can be judged at the same time. Even an operation error will not damage the device. In addition, when a dangerous signal such as an external voltage enters the tester through the terminal, the device alarm indicator turns red and the amplifier is automatically cut off.
8. Rich contact points and strong test suitability The device has eight switch inputs (ABCRabcr) and 4 switch outputs. The input contacts are empty contacts and 0-250V potential contact compatible, which can be intelligently identified.
9, flexible placement, powerful software device can be placed horizontally, can be off-line operation, can also be an external PC operation, the test results can be automatically organized, recorded into a test report, for reference, can also use U disk to save directly And easy to transfer to an external PC in the editing, printing and other processing. The software upgrade is simple and quick, directly through the U disk upgrade or external PC downlink, without changing any hardware. Software-assisted calculations are powerful and can automatically calculate positive, negative, and zero-sequence currents, and active and reactive power and power factors on the primary and secondary sides. Optional built-in GPS module, just an external antenna, you can synchronize the adjustment. 
§1.2 Three-phase relay protection tester product model description and parameters