CTAP-3ph Protection Current Transformer with Flexible Core

The CTAP-3ph Three Phase flexible current transformers are the world's first flexible 'clip-on' current probe with a 5A 5VA output, allowing compatibility with existing 5A metering circuits and 5P10 and 5P20 protection requirement. Unlike conventional CTs, there are no open circuit hazards - ideal for retrospective metering projects and installations in confined spaces where installation of conventional iron core CTs is not possible. The CTAP-3ph 5A output Rogowski Coil current sensing, simplifies installation and eliminates the need for expensive LV/MV plant shutdowns. In addition, the CTAP-3ph modules can be used to convert any voltage output current measuring device to a 1A or 5A secondary.

The CTAP-3ph flexible current transformers convert AC current to an isolated 0-5A current with available ranges from 100A to 10,000A. Because the current sensors are flexible split core, installation is possible without shutting down the LV electrical supply, avoiding expensive down-time costs. Typical applications are retrospective energy monitoring, including Data Centres, Hospitals, Banks, Shopping Centres where Energy Management, power, energy and current monitoring is crucial. For all CTAP-3ph three phase current sensor models, a NIST/NPL (UKAS) traceable calibration certificate and certificate of conformance is supplied. All CTAP-3ph sensors use UL94V0 or CSA approved materials. The CTAP-3ph flexible current sensors are suited to permanent or semi permanent installation. The coil sensor is durable, lightweight, flexible and will easily clip-around a power cable - even in confined spaces. The 5A output from the CTAP-3ph current sensor connects direct to installed metering, rotary metering or current transducers.

CTAP-3ph 5A Rogowski Coil facts and important application information

• 5A output Rogowski Coil current sensing technology
• Suitable for three phase systems in Data Centres, Shopping Centres, Banks
• Available Rogowski sense coil diameters 100mm, 150mm, 200mm and 330mm
• Isolated measurement outputs connect to kWHr energy metering
• 5Arms metering compatible output at 2.5VA, 5VA or 7.5VA
• UL Rogowski Coil 1kV insulation continuous (tested 7.4kV)
• Available as 0.25%, 0.5%, and 1% accuracy class
• Long distance option 0-5A; Up to 500m (1640ft)
• Wide measurement range from 1% to 125% of range
• Flat frequency response from 25Hz to 1500Hz
• 110Vac-240Vac power supply, optional 24Vdc, 48Vdc or 125Vdc
• Operating range -20°C to +45°C, sensors +80°C
• Safety EN61010-1 1000Vac CATIII, 600Vac CATIV CE marked, UL94V0 flame retardant
• Allows fast installation and live installations
• Accreditation certificate and calibration data

• Fast installs are possible in Hospitals, Data Centres, Airports, Shopping Centres and Banks
• Ideal for Current sensing for Active Harmonic Filters where burden can exceed 5VA
• Install without shutting down the LV electrical supply, avoiding expensive down-time costs
• Retrospective energy monitoring include hospitals, shopping centres, server farms, marine/shipping
• Allowing compatibility between Energy Management Systems and legacy energy metering
• Power, energy and current monitoring on solar renewables
• Fast response needed for active harmonic cancellation and filters
• The CTAP-3ph flexible current sensors are suited to permanent or semi permanent installation
• The UL Rogowski Coil sensor is durable, lightweight and flexible, easily clips around a busbar or feeder
• Suited to installations where conventional CTs are physically too large

Applications

The Powertek CTAP-3ph flexible Rogowski coil sensor and conditioning module are supplied as calibrated sets with a traceable calibrated 0-5Arms output

• Diameters: 100mm/3.85", 160mm/6.2”, 220mm/8.6”, 330mm/11.7" clip-around sensor,
• Split core / wrap-around construction
• Rogowski Coil Sensor Thickness: 8mm/0.31"
• Material: Flexible Thermoplastic rubber, flame retardant UL94V0
• Working voltage: 1000V at 50/60Hz CAT III, tested 7400V 50/60Hz 1 minute

• 1000V UL style 20940, 5mm dia, 3m, 5m and 10m lengths

• Input ranges: From 0-100A to 0-10,000Arms
• Accuracy class options, 10%-125% range: <0.25%, <0.5%, <1.0%
• Casing: Din Rail module UL94V0 and CSA approved polycarb
• Fundamental Frequency: 20Hz to 1500Hz
• Bandwidth: 20Hz-1500Hz CTAP-3ph 5A
• Output ratings: 2.5VA (0.1ohm burden), 5VA (0.2ohm burden) or 7.5VA
• Phase shift: <0.04° at 50/60/400Hz
• Conditioner input impedance: 100kohm
• Accurate with waveform crest factors: 1.4 - 5
• Health monitoring LEDs and fault reporting relay outputs
• Power: 110Vac-240Vac power, optional 24Vdc, 48Vdc and 125Vdc
• Fuse for 230/240Vac instrument power 1A slow blow or time delay
• Includes: Din Rail, PSUs, conditioner and output transformer (5A)

• Operational range -20°C to +65°C

All products have CE, IEC, EN, ASME or BS approvals