Double Clamp Digital Phase Voltammeter, direct measurement of AC voltage and AC current in the measured circuit which not open-loop, measure the phase between two voltages, two current and voltage current, and indirectly measure the power factor and power of the circuit. 1. Model No.: ETCR4000 2. Voltage Range：0~500V； 3. Current Range ：0~20A； 4. Phase Range ：0~360°； 5. CT Size：Φ8mm; 6. Power Supply : DC9V LR61.5V AAX6PCS

In the case of the tested circuit is not open-loop, measure two AC voltages, current, phase between voltages, phase between currents, phase, frequency, phase sequence, active power, reactive power, apparent power, and power factor between voltage and current. Discriminate the transformer wiring group, inductive and capacitive circuits, test the secondary circuit and the busbar protection system, read the phase relationship between the CTs of the differential protection groups, check the wiring of the meter for correctness, and repair the line equipment, etc. 1. Model No.: ETCR4000A 2. Simultaneous measurement of two channel AC current, range: 0.0mA~20.0A 3. Simultaneous measurement of two channel AC voltage, range: 0.00V~600V 4. Simultaneous measurement the phase between UU, II, UI, range: 0.0°~360.0° 5. Active power Range:0.0W～12kW 6. Power supply : DC9V Alkaline battery LR61.5V AAX6PCS

In the case of the tested circuit is not open-loop, measure two AC voltages, current, phase between voltages, phase between currents, phase, frequency, phase sequence, active power, reactive power, apparent power, and power factor between voltage and current. Discriminate the transformer wiring group, inductive and capacitive circuits, test the secondary circuit and the busbar protection system, read the phase relationship between the CTs of the differential protection groups, check the wiring of the meter for correctness, and repair the line equipment, etc. 1. Model No.: ETCR4020 2. Simultaneous Measurement of Two Channel AC Current Range : 0mA~600A 3. Simultaneous Measurement of Two Channel AC Voltage Range: 0.00V~600V 4. Simultaneous Phase Test Between UI, II and UU Range : 0.0°~360.0° 5. Frequency Range: 45.00Hz～65.00Hz 6. Power Supply : DC9V Alkaline battery LR61.5V AAX6PCS

Three-phase Digital Phase Voltammeter in the case of the tested circuit is not open-loop, Measuring three-phase AC voltage, current, phase between voltages, phase between currents, phase, frequency, phase sequence, active power, reactive power, apparent power, and power factor between voltage and current. 1. Model No.:ETCR4300 2. Current Range: AC 0.0mA~20.0A 3. Voltage Range: AC 0.00V~600V 4. Phase Range: 0.0°~360.0° 5. Frequency Range: 45.00Hz～65.00Hz 6. Power Supply: DC9V Alkaline battery (LR6 1.5V AA×6)

In the case of the tested circuit is not open-loop, Measuring three-phase AC voltage, current, phase between voltages, phase between currents, phase, frequency, phase sequence, active power, reactive power, apparent power, and power factor and current vector sum. 1. Model No.: ETCR4320 2. Voltage Range: AC 0.00V～600V 3. Current Range: AC 0.0mA～600A 4. Frequency Range: 45.00Hz～65.00Hz 5. Data Storage : 500 groups 6. Power Supply : DC9V Alkaline battery (LR6 1.5V AA×6)

Multifunction Three-Phase Phase Voltammeter can measure the voltage amplitude, current amplitude, voltage phase, current phase, the phase between voltage and current, frequency, power, active power, reactive power,harmonic and so on parameters at the same time. 1. Model No.: ETCR4400 2. Current Range: 0.001A-20A 3. Voltage Range: 2V-700V 4. Phase Range: 0°~360° 5. Harmonic range: 2 ~ 21 times 6. Power Supply : DC7.4V, 5200mAH rechargeable lithium battery

Used for wireless synchronous measurement of voltage amplitude, current amplitude, voltage phase, current phase, frequency, power and other parameters of different measurement points in the secondary circuit of the substation, and can also synchronous display the three-phase voltage and current vector diagram in the master and slave machine screen. Solve the problem that current and voltage cannot be measured at different points in smart substation completely. 1. Model No.: ETCR4480 2. Voltage Range : 2V~700V 3. Current Range : 0.001A-20A 4. voltage and current accuracy up to class 0.3; phase accuracy is ±0.3 5. Phase : 0°~360° 6. Power Supply: DC7.4V, 5200mAH rechargeable lithium battery