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Flex CT (Flexible Current Transformer) - Bolt

Flex CT (Flexible Current Transformer) – Bolt

$1,215.00 – $2,100.00Price range: $1,215.00 through $2,100.00

Please call +1 (800)296-4120 for International Pricing

The Bolt Flex CT Current Transformer is a set of three 5,000A flexible current probes designed for use with the Bolt Power Quality Recorder. Engineered for full three-phase monitoring in utility and industrial environments, this current transformer set enables accurate current measurement across a wide operating range while simplifying installation around large conductors or in constrained spaces. Its flexible design allows it to be easily wrapped around conductors where rigid clamps may not be practical, supporting efficient deployment in field conditions.

Adapted from PMI’s Flex CT platform, this version is configured for seamless integration with the Bolt system and does not require an external power source. The sensor is powered directly by the Bolt device, reducing setup complexity while maintaining measurement performance. With multiple selectable ranges, the Flex CT supports a broad range of monitoring applications, from lower current measurements to high-load conditions.

When used with the Bolt Power Quality Recorder, the Flex CT enables comprehensive current measurement alongside voltage data, supporting improved analysis of system performance, load behavior, and distribution conditions.


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Send it to askmerlin@powermonitors.com or text (540) 383-3144

  • Features & Benefits
  • Specs
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Features & Benefits

The Bolt Flex CT Current Transformer is designed to provide flexible and reliable current measurement across a wide range of utility applications. Its flexible sensor construction allows it to be installed around conductors of varying sizes, including large cables and busbars, making it well suited for installations where rigid current probes are difficult to use. This flexibility enables faster installation and reduces the need for system modifications during deployment.

With switchable current ranges from 1 to 100A, 1 to 1000A, and 1 to 5000A, the device supports a wide range of monitoring scenarios. Its operating limit of up to 5000A allows it to capture high-load conditions while maintaining accuracy. No battery pack is needed as the sensor is powered directly by the Bolt device, eliminating the need for external power sources and simplifying field setup.

The Flex CT provides strong measurement performance, including low linearity error and stable phase shift characteristics across standard operating frequencies. Its design also supports reliable operation across a broad frequency range, enabling detailed analysis of system behavior.

Constructed with durable materials and designed for environmental protection, the sensor and module are rated for demanding field conditions. When paired with the Bolt platform, the Flex CT enhances system visibility by enabling accurate current measurement as part of a complete power quality monitoring solution.

Specs

Electrical
Switchable Ranges 1 to 100A, 1 to 1000A, 1 to 5000A
Operating Limit 1 to 5000A
Power Source Supplied by Bolt. No external power source required.
Linearity ±0.05%
Phase Shift ≤±0.5% at 50 to 60 Hz
Frequency Range 8Hz to 10kHz
Crest Factor (mid range) 100A and 1000A scale: 3.0; 5000A scale: 1.6
Position Sensitivity ±1.5% 1 in from connector
Channels 3
Working Voltage
Sensor 600V AC to earth
Module 600V AC to earth
Accuracy
Accuracy ± 1% of full scale
Safety
Construction Double Insulated
Sensor Rating 600V CAT IV
Module Rating 600V CAT III
Pollution Degree 2
Mechanical Materials
Sensor Jacket Polyurethane UL94V0
Connector FR Polypropylene UL94V0
Cable Jacket Polyurethane UL94V0
Environmental
Operating Temperature -20°F to 135°F, -29°C to 57°C
Altitude Operating 0 to 2000m, derated above 2000m
Case Protection Sensor and Module IP65 per IEC 529

White Papers

Flex CT Overview

Using Scale Factors for PT/CT Ratios & Per-Unit Analysis in ProVision

Auto-Correction of CT Hookup

Click Here for Product-Related White Papers

Videos

FAQ

What current ranges does the Bolt Flex CT Current Transformer support? +

The Flex CT offers three switchable ranges: 1 to 100A, 1 to 1000A, and 1 to 5000A, so you can match the range to your expected current for the best resolution.

Does the Flex CT require its own power source? +

No. The sensor is powered directly by the Bolt device, so no external power source or battery is required.

Can I use the Bolt Flex CT Current Transformer with other PMI recorders? +

This version is configured specifically for compatibility with the Bolt system. For use with other PMI recorders, see the standard Flex CT platform.

What voltage rating is the Bolt Flex CT Current Transformer safe for? +

The sensor is rated for 600V CAT IV and the module for 600V CAT III, allowing safe use in demanding industrial and utility environments.

How do I ask a power quality question about my data? +

Email Merlin™ at askmerlin@powermonitors.com or text (540) 383-3144. Merlin™ is PMI’s AI assistant, trained on 425+ technical white papers.

Have a PQ question? Ask Merlin™ — free. Send it to askmerlin@powermonitors.com or text (540) 383-3144.

Power Monitors, Inc. — Tools you Need. People you Trust.

Power Monitors, Inc. is an industry-leading product design and manufacturing firm based in Mt. Crawford, Virginia. PMI® strives to solve power quality problems by listening to our customers and working with them to design and manufacture products. Total customer satisfaction is the primary goal of all PMI® staff.

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