1.Introduction:  

     ETCR9500 Wireless High Voltage Current Transformation Ratio Tester breaks traditional structure, specially designed for high and low voltage first and secondary loop current, variable ratio,  and current leakage test; apply the latest CT technology and mask digital integration technology, composed of special high-voltage clamp, low voltage clamp, host, high voltage insulation rod and monitoring software, etc; its wireless transmission test data can penetrate multiple building obstacles with a straight-line distance of 30 meters.  

  With monitoring software, the meter has online real-time monitoring and historical query function, with dynamic display, wave direction, variable ratio, frequency indication, with maximum, minimum, mean value indication; alarm setting and alarm indication functions, functions of historical data reading, access, saving, analysis, processing, sorting, fitting curve, report and printing.

High-voltage detector connected rod can be used in the measurement of high voltage line current, currents on both sides of transformer, variable ratio test, online current monitoring below 60KV; The special clamp ammeter can facilitate clamp to exit the tested lead by pressing or pulling back insulation bar, which is time efficient and convenient; widely used in power plant, substation, industrial and mining enterprise, inspection station, electrician maintenance department for current sensing, power audit and field working.

     2.Technical Specifications:  

                           Function      

                  High and low voltage first and secondary loop current, variable ratio, current leakage online test; current on both sides of transformer, variable ratio online monitoring        

                          Power supply      

                  DC6V alkaline dry battery (1.5V AAA×4), continuous working for 30 hours      

                          Test mode      

                  Clamp CT      

                          Transmission mode      

                  Wireless transmission, the maximum distance of straight line transmission is about 30m      

                          Display mode      

                  LCD: 128dots×64dots; blue backlight function      

                          LCD dimension      

                  Display domain: 44mm×27mm      

                          Meter dimension      

                  Host: width, height, thickness75mm×170mm×30mm      

             High voltage clamp: width, height, thickness 76mm×255mm×31mm      

             Low voltage clamp: width, height, thickness 63mm×160mm×23mm      

                          Clamp dimension      

                  High voltage clamp: φ48mm      

             Low voltage clamp: φ30mm      

                          Sampling rate      

                   2 times/second      

                          Measurement scope      

                  High voltage clamp: 0.0mA～1000A      

             Low voltage clamp: 0.00mA～10A      

                          Resolution      

                  High voltage clamp: 0.1mA      

             Low voltage clamp: 0.01mA      

                          Shift      

                  Automatic shift      

                          One loop testing accuracy      

             23℃±3℃, below 80%RH      

                  0.0mA～10.0A:       ±1%±5dgt       

                          10.0A～49.9A:        ±2%±5dgt       

                          50.0A～199.9A:      ±3%±5dgt      

                          200A～600A:          ±4%±5dgt         

                          601A～1000A:        ±5%±5dgt        

                          Secondary loop testing accuracy      

                  0.00mA～10A:        ±1%±5dgt  (23℃±3℃, below 70%RH)      

                          Variable ratio      

                  3 variable ratio displays: (first and secondary loop real-time current measurement ; calculate the variable ratio at 5A of secondary loop and 10kV-YY of transformer 10kV/380V); the maximum transformation ratio is 1:10 million (1.0K7)          

                          Data storage      

                  3000 sets, press key HOLD to maintain data and automatically numbered storage (data won’t lose in power off or battery replacement)      

                          Line voltage      

                  Below 60KV line test (with 5 insulation rods operation)      

                          Data retention      

                  Press key HOLD key to maintain data, shown by HOLD , and then press HOLD to cancel maintaining.      

                          Data access      

                  Enter data access mode by pressing key HOLD+ key POWER       

                          Overflow display      

                  Over-range overflow function: shown in “OL A”      

                          No signal indication      

                   “No signal” will be shown when the host fails to receive signal      

                          Automatic shutdown      

                  15 minutes after boot, meter automatically shuts down      

                          Battery voltage      

                  When battery voltage is lower than 4.8V, battery voltage is shown in low symbol to remind battery replacement      

                          Meter mass      

                  Host: 240 g (with battery)      

             High voltage clamp: 335g (with battery)      

             Low voltage clamp: 170g (optional)      

             the total mass of meter: 2.5kg (including insulation rod and battery)      

                          External disturbance      

                  No particularly strong electromagnetic field; without 433MHz and 315 MHz interference      

                          Working temperature and humidity      

                   -25℃～45℃; below 80%Rh      

                          Storage temperature and humidity      

                  -10℃～60℃; below 70%Rh      

                          Insulation rod dimension      

                  φ32mm, 1m/piece (5pieces,standard configuration)      

                          Low voltage current clamp lead      

                  Standard 2m      

                          Insulation strength      

                  High voltage clamp: AC100kV/rms (between the 5th insulation rod and high voltage current clamp core)      

             Host and low voltage clamp: AC1000V/rms      

                          Structure      

                  Anti-drip type Ⅱ (high voltage detector)      

                          Safety Provisions      

     IEC1010-1, IEC1010-2-032, Pollution Class 2, CAT Ⅲ(600V), IEC61326(EMC standard)

                          Accessories      

                  Clamp: 1 piece; receiver: 1 piece; current clamp: 1 piece; disc: 1 piece; RS232 communication wire: 1 piece; meter box: 1 piece; insulation rod (1m): 5 pieces.