Megger CAL1, CAL2, CAL3 Calibration Impulse Generators

Description

Unique Design for Exceptional Impulse Properties

The Megger CAL1, CAL2, and CAL3 Calibration Impulse Generators stand as industry benchmarks for the precise calibration of partial discharge (PD) measurement setups. These impulse calibrators showcase exceptional impulse properties, made possible by a unique design concept that positions them above conventional calibration solutions. Built for use across high frequency (HF), ultra-high frequency (UHF), and radio interference voltage (RIV) measurement environments, they deliver the short-duration current pulses required to calibrate PD measuring instruments—ensuring reliable and reproducible PD analysis in the field or laboratory. The robust construction, intuitive interfaces, and impressive charge injection accuracy enable these devices to meet critical calibration standards, including IEC 60270, CISPR 18-2, and NEMA 107. Rigorous laboratory calibration, in compliance with ISO 17025:2018 at Megger’s DAkkS-accredited facility, further guarantees that every CAL1, CAL2, and CAL3 impulse generator provides standards-leading traceability, confidence, and reliability in high voltage diagnostics.

Comprehensive Calibration for Partial Discharge Measurement

Partial discharge detection is indispensable in high voltage insulation assessment for power assets such as cables, transformers, rotating machines, and gas-insulated switchgear. However, because partial discharge phenomena cannot be measured directly, the Megger CAL series generators fulfill a crucial role—injecting short current pulses with precisely known charge levels for system calibration. This process allows for the correct scaling of apparent charge readings on PD measuring instruments, ensuring all subsequent PD measurements are meaningful and standardized. With broad calibration charge ranges and configurable options across the CAL1, CAL2, and CAL3 models, users can select the most suitable device to match the magnitude and nature of the PD signals relevant to their specific assets. Whether working in high frequency, UHF, or RIV environments, these calibrators secure the accuracy of test setups, supporting trending, detection, and preventive maintenance strategies in power systems.

Versatile Solutions for Multiple Asset Types

The versatility of the CAL series becomes even more evident when examining the array of supported applications. Engineered for everything from cable integrity verification to high voltage transformer testing and rotating machinery diagnostics, these calibrators are also engineered for advanced applications such as gas-insulated switchgear (GIS), where high-frequency PD events demand utmost sensitivity and calibration accuracy. Trainers and maintenance crews can deploy the CAL1 series for time domain reflectometry applications—a feature that simplifies cable length measurement and joint location determination with ease, enhancing utility over traditional methods. The CAL2 models, with their ability to conduct sensitivity checks on GIS per CIGRÉ’s technical specifications, and the CAL3 series for RIV calibration (compliant with international and North American standards), extend the utility of these impulse generators across a broad range of industries, assets, and diagnostic protocols.

Extensive Model Range and Customizable Accessories

One of the outstanding strengths of the Megger CAL1, CAL2, and CAL3 impulse generators is the range of available models and the extensive list of accompanying accessories. From the CAL1A’s micro-picocoulomb ranges designed for fine cable and transformer tests to the higher charge levels of CAL1B and CAL1E for heavier duty applications, there is a CAL series device tailored for every use case. Accessories include an array of connection sets—featuring clamps, banana cables of varying lengths, twinaxial cables, T-joint adapters, BNC and N connectors, and 50 ohm terminators—ensuring seamless integration and rapid setup in any configuration. Ready-to-use cable sets, adapters, and pre-assembled components are thoughtfully organized, eliminating the guesswork and providing all necessary items for secure, repeatable connection to any PD measurement system.

Intuitive Operation and Long-Lasting Performance

User experience is central to the design of every CAL1, CAL2, and CAL3 model. The devices feature a clear arrangement of controls and an ample LC display for enhanced readability, even in dynamic field environments or busy laboratories. Intuitive two-button operation simplifies calibration routines, while built-in automatic synchronization to line frequency is accomplished via a photo diode or, where necessary, via an internal quartz oscillator. Battery longevity sets the CAL series apart, with up to 200 hours of continuous operation from a standard lithium metal battery—enabling prolonged test campaigns without the need for frequent battery changes. Standby consumption is negligible, and devices are engineered for operation across a broad temperature range (10–40°C, non-condensing), supporting use under varied environmental conditions.

Advanced Options for Specialized Applications

The Megger CAL series further distinguishes itself with a variety of optional features and switchable configurations that expand its application scope. Users may select between 50 Hz and 60 Hz operation, facilitating use across global power systems. For the CAL1 range, a double-pulse function with adjustable time delay is available, supporting advanced measurement setups and testing scenarios. A remote power input option enables supply from an external 12 to 24 V DC source, ideal for stationary bench setups or prolonged operational needs. Additionally, a selection switch for single pulse or continuous pulse operation allows for both manually triggered single events or ongoing pulse trains, catering to both development and routine diagnostic testing. These options collectively ensure that every user can configure the calibrator to their specific standards, site protocols, and diagnostic preferences.

Dedicated Applications and Real-World Use Cases

The real-world applications of the CAL1, CAL2, and CAL3 Pulse Generators are vast and impactful. Utilities and equipment manufacturers rely on these devices during commissioning and maintenance to establish baseline measurements and validate the sensitivity of PD testing circuits in cables, transformers, and GIS systems. In time domain reflectometry with the CAL1, cable length determination and joint identification is streamlined and accurate, helping locate faults and optimize cable installation. For GIS diagnostics, CAL2 models provide vital sensitivity checks in accordance with industry-leading CIGRÉ guides, while the CAL3 range is indispensable for RIV calibration, ensuring compliance with NEMA and CISPR standards. For every application—from predictive maintenance to academic laboratory research—the Megger CAL impulse generators play a mission-critical role in determining the health and reliability of high voltage assets.

Global Excellence Through tpt24 Online Store

For all professionals seeking the ultimate in calibration impulse generators, the online store tpt24 stands above all as the premier destination for the Megger CAL1, CAL2, and CAL3 series worldwide. With a robust global logistics network, tpt24 delivers these precision instruments with a guarantee of authenticity and quality assurance, directly to your location, no matter which country you operate in. Customers choosing tpt24 benefit from expert support, competitive pricing, and the peace of mind provided by authorized sourcing. Whether equipping a major utility’s diagnostic division, an industrial maintenance crew, or an engineering research laboratory, tpt24 ensures a seamless purchase experience and the full confidence that your Megger calibrator is genuine, covered by warranty, and supported for optimal productivity.