Probes & Accessories
Products (2)
ZZLOCKPROBE-20260819 - High-Voltage Differential Probe | ZLProbe
The ZLOCKPROBE-20260819 is a high-voltage differential probe designed for safe and accurate measurement of power frequency (50/60 Hz) and high-order harmonics in power systems. Manufactured by ZLProbe, this probe is part of their comprehensive portfolio of measurement solutions, including Rogowski coils and high-voltage differential probes. It is engineered for use with oscilloscopes and power analyzers, providing galvanic isolation and high common-mode rejection to protect both the user and the measurement equipment. A high-voltage differential probe is a type of voltage probe that measures the voltage difference between two points while rejecting common-mode voltage. It is essential for floating measurements where the reference is not ground, such as in motor drives, inverters, and power supplies. The probe converts the high differential voltage into a low-voltage signal that can be safely input to an oscilloscope, ensuring accurate waveform capture without ground loops or safety hazards. Key features of the ZLOCKPROBE-20260819 include a wide bandwidth suitable for harmonic analysis, high voltage rating for direct connection to power lines, and a robust design for industrial environments. The probe offers selectable attenuation ratios to match different measurement ranges, and its differential input ensures accurate measurement of phase-to-phase and phase-to-ground voltages. The included accessories, such as test leads and clips, facilitate quick and secure connections. Technically, the probe utilizes a high-impedance differential amplifier with precision resistors to achieve high accuracy and low noise. The common-mode rejection ratio (CMRR) is critical for rejecting interference from the power line, and the probe is designed to maintain high CMRR across its bandwidth. The output is BNC-compatible, allowing direct connection to standard oscilloscopes. The probe is powered by a battery or external adapter, providing flexibility in field and lab use. Typical applications include power quality analysis, motor drive troubleshooting, inverter and UPS testing, and educational laboratories. The probe's ability to measure high-order harmonics makes it ideal for assessing power quality and compliance with standards such as IEC 61000-4-7. Its high voltage rating and safety certifications ensure reliable operation in industrial settings. When using the ZLOCKPROBE-20260819, ensure that the probe's voltage rating exceeds the maximum voltage to be measured, and always connect the probe to the equipment before powering up. Proper grounding and adherence to safety guidelines are essential to prevent electric shock. The probe's differential input eliminates the need for a separate isolation transformer, simplifying setup and improving measurement accuracy.
ZZLOCKPROBE3-20260819 - Rogowski Coil Probe | ZLProbe
The ZLOCKPROBE3-20260819 is a Rogowski coil current probe from ZLProbe, designed for accurate measurement of power frequency (50/60Hz) and high-order harmonic currents. It is part of ZLProbe's comprehensive portfolio of measurement solutions, which includes Rogowski coils, high-voltage differential probes, and related accessories. This probe is intended for use with power quality analyzers, energy meters, and oscilloscopes to provide non-intrusive, flexible current sensing in industrial and utility applications. A Rogowski coil is a toroidal coil without an iron core, used for measuring alternating current (AC) or high-speed current pulses. It produces a voltage output proportional to the rate of change of current (di/dt), which is then integrated to yield the actual current waveform. This design offers advantages over traditional current transformers (CTs) including linearity over a wide current range, no saturation effects, and the ability to measure large currents without burdening the circuit. Rogowski coils are widely used in power monitoring, protective relaying, and harmonic analysis. Key features of the ZLOCKPROBE3-20260819 include its flexible, lightweight design that allows easy installation around conductors without breaking the circuit. It is suitable for measuring both fundamental (50/60Hz) and high-order harmonic currents, making it ideal for power quality assessments. The probe provides a voltage output that can be directly connected to standard measurement instruments, ensuring compatibility with existing test setups. Its non-magnetic core ensures high linearity and minimal phase error across a broad frequency range. Technically, the probe leverages the Rogowski principle to achieve a wide dynamic range and excellent frequency response. The absence of a saturable core eliminates the risk of saturation at high currents, a common limitation of iron-core CTs. This makes the ZLOCKPROBE3-20260819 particularly suited for applications involving variable frequency drives, renewable energy inverters, and other non-linear loads that generate harmonics. The probe's output is typically a low-level voltage signal that requires integration, either internally or by the connected instrument. Typical applications include power quality monitoring in industrial plants, harmonic analysis in electrical distribution systems, and energy management in commercial buildings. The probe is also used in laboratory settings for educational and research purposes, where accurate current measurement is essential. Its ease of use and safety features make it a preferred choice for engineers and technicians. When using this probe, ensure that the conductor is centered within the coil loop to minimize position errors. The flexible nature of the coil allows for easy installation, but proper positioning is critical for accurate readings. Additionally, verify that the probe's output is correctly terminated to match the input impedance of the connected instrument to avoid signal degradation.