Specifications fine shape, delicate workmanship, complete functions and excellent performance

1.? Summary ??????TTB-16 ?series testing? equipment for three-phase watthour meter is a kind of ????? second-generation? program? controlled three-phase? watthour? meter? test ????? device developed in? accordance? with? relevant? national? standards and ????? regulations and combined with comments and suggestion of our users and ????? experts.It is applicable for testing of three-phase watthour meters(including ????? positive sine reactive meters) of level 0.2 and below.?? 2.? Main characteristics and functions 2.1?? It is a product withreasonable ?design and delicate appearance. The meter ????? racks of the testing equipment and the desk frame are all made of special ????? aluminum alloy and the desk faceplate @ made of fireproof and heatproof ????? fiber material. 2.2?? Special keyboard operation and PC operation are available, and it is easy to ????? operate. The functions of the keys on the special portable keyboard are ????? clearly identified and the LCD on the special keyboard displays the testing ????? equipment working condition. 2.3?? During watthour meter testing, what needs to do manually is to put up the ????? meters to be tested, adjust the photoelectric sampler and setup the meter ????? parameters correctly, then all testing items including warming up, creeping ????? test,? starting? test? and? basic? error? measurement? can? be? completed ????? automatically? by? PC. The testing? procedure can? refer? to the national ????? procedure or can be self-defined by the user. 2.4?? The photoelectric sampler can realize three-dimensional adjustment. It can ????? not only sample the turn-plate signal of the rotary watthour meter but also ????? receive the strobe signal of the electronic watthour meter. 2.5?? The? error? processing system can? receive signal from? the photoelectric ????? sampler and output pulse of the insert type electronic watthour meter. 2.6?? Watthour meters of same type (same phase, rated voltage and rated current) ????? but different constant can be tested Simultaneously (only limited to three ????? different constants) 2.7?? Testing of the communication function of the 485 port,? demand error and ????? Clocking error of the multifunction watthour meter is available (The meters ????? being tested must have time signal output). 2.8?? Locating of marking area of the? rotary watthour meter turn-plate can? be ????? realized automatically, which enables easier creeping (starting) test. 2.9 ??The testing equipment is of high stability and reliability, which can provide ? strong output power. Voltage (current) loop can take load of any type. ?2.10? The testing equipment is provided with complete malfunction checking, ?????? locating, protecting and alarming functions to avoid damaging of the bench ?????? resulted from wrong manual wiring or operating. ?2.11? PC? software developed with Delphi for? Windows? 95 ?provides? fast? and ?????? effective equipment control and data checking, it also provides complete ?????? functions, such as report printing, quantity counting and assets maintaining ? 3.?? Main technical index and technical performance ?3.1?? Accuracy level:?? level 0.05 level 0.?1?????????? ?3.2?? Output voltage:? 3*100V/57.7V??? ???? 3*100V ???????????????????????????????????? 3*380V/220V?? ????? 3*380V ?????? Regulating scope: 0-120% consecutively adjustable ?????? Regulating fineness: better than 0.01% ?????? * Special voltage range can be setup according to user order. ?3.3?? Current range: 0.1A, 0.25A, 0.5A, 1A, 2.5A, 5A, 10A, 20A, 50A, 100A ?????? Regulating scope: 0-120% consecutively adjustable ?????? Regulating fineness: better than 0.01% ?3.4?? Output power;? ?(voltage loop)? 200VA ????????????????????????????????? ?(current loop)? 350VA 3.5??? Stability of output voltage, current and power: ?????? ≤0.02%/120S????? PF=1 (level 0.05 type) ?????? ≤0.05%/120S????? PF=1 (level O.1type) 3.6??? Wave distortion of output voltage and current: ≤0.5% 3.7??? Symmetry of three phase: better than 120. +0.3 3.8??? Frequency range: 45Hz~65Hz????? regulating fineness: 0.1 Hz 3.9??? Phase shifting range: -180.0 -180.0 regulating fineness: 0.1 3.10?? Standard crystal oscillator stability: ≤ 10-7/s 3.11?? Indicating instruments class ?????? Voltmeter and ammeter accuracy: level +0.5% ?????? Phase meter accuracy: +1 ??? ???Cymometer accuracy: +0.1Hz 3.12?? Maximum meters for test: 10, 16 3.13?? Power supply: 3*220+10%~50Hz 3.14?? Maximum power consumption:??????? 4000VA 3.15?? Working environment: temperature; 20+5°C?? relative humidity: ≤85% 3.16?? Dimensions and weight: ??????? 2380mm x 720mm x 1870mm??? 400kg