Original Japan HIOKI CT6877 Pass-Through AC/DC Current Sensor, 2000A Rated Zero-Flux Toroidal Sensor DC~1MHz Bandwidth Φ80mm Large Aperture CAT III 1000V For Heavy-Duty EV & Energy Storage High-Curren

CT6877 is HIOKI flagship large-aperture pass-through zero-flux current sensor specially developed for heavy-duty new energy high-current testing. It solves the pain point that traditional clamps cannot measure multiple bundled thick high-voltage cables of electric buses, heavy trucks and high-power charging stations.

The built-in double shielding structure drastically suppresses electromagnetic interference from SiC/GaN high-frequency inverters, while DC~1MHz ultra-wide bandwidth fully restores fast switching transient current waveforms. Basic amplitude accuracy reaches ±0.04% reading, phase error controlled within ±0.1°, ensuring reliable power efficiency calculation. Rated AC/DC 2000A continuous measurement, peak withstand ±3200A for surge current capture, CAT III 1000V safety insulation meets global automotive testing standards. Two cable length options available: standard 3m (CT6877) and extended 10m (CT6877-01).

1. Max AC/DC rated 2000A, peak transient withstand ±3200A, dedicated for heavy EV high-current loops
2. Ultra-large φ80mm inner aperture, support simultaneous clamping of 4×250mm² thick high-voltage cables
3. Zero-flux fluxgate measurement technology, outstanding linearity & anti-interference performance
4. Wide bandwidth: Amplitude DC~1MHz, Phase DC~700kHz, capture high-speed inverter PWM signals
5. Ultra-high basic accuracy: Amplitude ±0.04% rdg. ±0.008% f.s., Phase ±0.1° (45~66Hz)
6. 1mV/A fixed output ratio, dedicated ME15W interface connector for HIOKI power instruments
7. CAT III 1000V to ground safety rating, comply with IEC61010 industrial safety standard
8. Ultra-wide working temperature -40℃ ~ +85℃, stable measurement in cold/hot harsh test environments
9. Dual cable length selection: 3m standard (CT6877) / 10m extended (CT6877-01)
10. Compatible with PW8001/PW6001/PW3390 power analyzers & CT9555/CT9556/CT9557 sensor supply units

    Item	Standard Parameter
    Model	CT6877 (3m cable) / CT6877-01 (10m cable)
    Brand	HIOKI Made in Japan
    Rated Primary Current	AC/DC 2000 A continuous
    Max Peak Current	±3200 A peak (within derating range)
    Frequency Bandwidth	Amplitude: DC ~ 1 MHz; Phase: DC ~ 700 kHz
    Basic Accuracy (45~66Hz)	Amplitude: ±0.04% rdg. ±0.008% f.s.; Phase: ±0.1°
    Output Ratio	1 mV/A
    Inner Aperture Diameter	φ80 mm
    Safety Rating	CAT III 1000 V to ground (50/60Hz)
    Operating Temperature	-40 ℃ ~ +85 ℃, ≤80% RH non-condensing
    Connector Type	Dedicated ME15W signal cable interface
    Compatible Host	PW8001, PW6001, PW3390 Power Analyzer; CT9555/CT9556/CT9557 Sensor Unit
    Core Technology	Zero-Flux Fluxgate Toroidal Sensing

Heavy-duty electric bus / truck battery charge & discharge high-current testing, 800V EV SiC inverter power efficiency measurement, high-power DC fast charging pile performance evaluation, energy storage converter grid-tied current waveform recording, industrial large servo motor & transformer high-current power analysis, new energy vehicle R&D laboratory long-term aging test.