Low-current Model of 200 A Rating, with Wideband and High Accuracy
Low-current Model of 200 A Rating, with Wideband and High Accuracy
FEATURES
High-accuracy sensors uses the "zero flux method (flux gate detection type)." High-frequency currents are detected with the winding (CT method), and DC to low frequency currents are detected using a "flux gate."
Flux gate detection delivers outstanding linear properties, and can measure currents of a wide range of magnitudes with high accuracy.
The fluxgate components used for DC detection have very low offset over a wide temperature range due to their operating principle, resulting in high accuracy and excellent temperature stability. It is ideal for measurements that require high accuracy, such as Power analyzers and Power meters. It can be used for measurement such as inverter efficiency, inverter output power, reactor/transformer loss, and long-term DC measurements.
The CT6873 has a frequency bandwidth of DC to 10 MHz, which is top-class for a 200 A rated pass-through sensor. In combination with the Power Analyzer PW8001, high frequency and low power factor power can be measured accurately.
To accurately measure high frequency and low power factor, it is important to correct phase errors. The PW8001 automatically acquires and corrects the phase of the current sensor with 0.001°resolution, bringing out the best performance of the current sensor without any effort.
The current sensor is equipped with a memory (I2C-EEPROM).
When the current sensor is connected to the Power Analyzer PW8001, the phase correction data, rated current, sensor's model name, and serial number are automatically recognized by the instrument.
In the past, phase correction values had to be entered manually.
However, thanks to the automatic detection system of current sensor information, forgetting settings and typing errors are eliminated, allowing for more accurate power calculations.
| Rated current | 200 A AC/DC |
|---|---|
| Max. allowable input | Within the derating range, up to ±420 A peak (design value) allowed at 40°C or less for 20 ms or less |
| Frequency bandwidth | Amplitude: DC to 10 MHz Phase: DC to 1 MHz |
| Basic accuracy | DC (±0.03% rdg. ±0.002% f.s., no phase specification) 45 Hz ≤ f ≤ 66 Hz (±0.03% rdg. ±0.007% f.s., ±0.05°) Specified up to 1 MHz |
| Output voltage rate | 10 mV/A rated (This device outputs AC+DC voltage via the Sensor Unit) |
| Max. rated voltage to earth | 1000 V CAT III |
| Core diameter | φ 24 mm (0.94 in) |
| Operating temperature, humidity | -40°C to +85°C (-40°F to 185°F), 80% RH or less (with no condensation) |
| Power supply | Power suppled via the Power Analyzer PW8001, PW6001, PW3390, Sensor Unit CT9555, CT9556, CT9557, or 3CH CURRENT UNIT U8977 |
| Max. rated power | 6 VA max. (at 200 A/55 Hz, ±12 V power requirement) |
| Dimensions and mass | 70 mm (2.76 in)W × 100 mm (3.94 in)H × 53 mm (2.09 in)D, CT6873: 370 g (13.1 oz), cable length: 3 m (9.84 ft), CT6873-01: 690g (24.3 oz), cable length 10 m (32.81 ft) |
| Included accessories | Instruction Manual ×1, Mark bands ×6, Operating Precautions ×1 |
| Compatible models | CT6873 |
|---|---|
| Power Analyzer PW8001, PW6001, PW3390 |
OK |
| Power Analyzer 3390 |
Attention (Requires CT9901) |
| Power HiTester 3193 series |
Attention (Requires CT9901) |
| Current Unit 8971 |
Attention (Requires the 9318, CT9901) |
| 3CH Current Unit U8977 | OK |
