MILIM (주)미림씨스콘 MILIM SYSCON CO., LTD.

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RCT1A 요약정보 및 구매

Designed for the permanently installed industrial market with all the advantages of Rogowski Coil technology

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제품 정보

상품 기본설명

Designed for the permanently installed industrial market with all the advantages of Rogowski Coil technology

상품 상세설명

RCT Industrial Current Sensor

RCT1A

The RCT1A is a genuine Current Transformer (CT) replacement but has all the intrinsic benefits of a thin, light-weight, flexible, clip-around Rogowski (sense) coil. Just like a CT the RCT1A secondary output is an industry standard 0 to 1A (5VA pf 1) instantaneous current proportional to the measured primary current

Typically the RCT1A is used with power, current and power quality meters and is an ideal replacement for CTs in retrofit applications to avoid plant shutdown, applications with limited space for installation and particularly where existing monitoring equipment designed for a 0 to 1A CT input is installed.

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Overview

The RCT1A is a genuine current transformer (CT) replacement but has all the intrinsic benefits of a thin, light-weight, flexible, clip-around Rogowski (sense) coil. Just like a CT the RCT1A secondary output is an industry standard 0 to 1A (5VA p.f. 1) instantaneous current proportional to the measured primary current.

Typically the RCT1A is used with power, current and power quality meters and is an ideal replacement for CTs in retrofit applications to avoid plant shutdown, applications with limited space for installation and particularly where existing monitoring equipment designed for a 0 to 1A CT input is installed.

Standards and Approvals

  • CE marked
  • Complies with EMC EN 61326-1 2006
  • Complies with IEC61010-1:2001
  • PEM Ltd is an ISO9001:2008 registered company
  • Patent pending application no. PCT/EP2012/053893

Performance

Rated current (rms)
500Arms to 50kArms
Rated output (Full scale FS)
1A rms
Output limit
120% FS (1.2A rms)
Supply voltage
24Vdc (+/-20%)
Maximum input power
For 5 ohm burden, 100% Rated current, 13W
For 1.25 ohm burden, 100% Rated current, 3.5W
Operating temperature range
–5℃ to +40℃ (Integrator electronics)
–20℃ to +80℃ (Coil and cable)
Bandwidth (-3dB)
0.6Hz to 5kHz
Phase shift @50Hz
< 0.5 degrees
Accuracy (typ.)
±1.0% of reading
(20% to 120% FS, 25℃)
Output load
5 ohm to 1.25 ohm
Coil Length
300mm, 500mm or 700mm (Custom lengths available)
Cable Length (coil to integrator)
1m or 2.5m (Custom lengths available)

Features

  • Traceable calibration (certificate included)
  • No magnetic materials means excellent linearity < 0.2% reading
  • Fully isolated measurement
    • Isolated power supply 2kVdc
    • Coil rated at 2kVpeak (withstand test is 4kVrms / 50Hz / 60 sec)
  • Small DIN rail (or panel mount) enclosure – UL94 V-0 rated

Options

Isolated BNC-BNC cable split option between coil and electronics to enable ease of installation e.g. threading through existing conduit. Standard cable permanently fixed.

Applications

Retrospective current monitoring with existing 1A/5A metering systems

RCT1A Applications

Until recently, flexible coil current sensors (Rogowski coils) have provided voltage or mA outputs proportional to the measured current; perfect for data acquisition systems but not compatible with traditionally installed 1A/5A metering systems. This compatibility issue is eliminated with the new RCT1A current sensor from PEM Ltd. The RCT1A is a flexible, clip-around, light-weight current sensor with a 0-1A output. It allows safe and simple installation and is compatible with energy meters that are typically fed from current transformers (CTs).

Installation of "retrospective" power and energy monitoring systems can be costly if the installation requires plant shutdown. Installation conditions are often less than perfect, and lack of space can mean bus-bars must be repositioned to accommodate large iron core CTs making shutdown unavoidable. This poses a particular problem when the nature of the business cannot accommodate electrical shutdown e.g. hospitals.

Other applications include:

  • Power ultilities
  • Arc furnaces
  • Building services
  • Custom versions
    • Rogowski coils immersed in transformer oil
    • Long coils and cable runs
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