GridKey Flexible AC Current Sensor
Lucy Electric Digital Solutions.
Suitable for indoor and outdoor environments for LV substation monitoring, power quality monitoring and building energy monitoring applications.
FlexiSensor
- EZ02000123_1 2m
- EZ02000055_1 3m
- EZ02000124_1 4m
The new FlexiSensor 3 phase flexible current sensor utilises the non-saturating Rogowski principle for measurement of AC current.
A robust but flexible design for retro-fitting in compact situations. Suitable for indoor and outdoor environments for LV substation monitoring, power quality monitoring and building energy monitoring applications.
The FlexiSensor is supplied with the individual head sensitivity and phase error programmed to the EEPROM
Features
- Advanced winding for improved measurement accuracy class
- Higher frequency bandwidth
- Improved temperature coefficient for stability in all environments
- Flexible sensor for ease of installation
- Lockable coupling to prevent accidental disconnection
- Easily installed whilst wearing PPE
- Coupling band for phase identification
- IP67
- UV Rated for outdoor use
Advantages
- Light weight and flexible
- Excellent accuracy
- Quick to install
Applications
- Ground and Pole mount LV substation monitoring
- Power quality monitoring
- Building energy monitoring
Standards
- EN 61010-1, EN 61010-2-032
- EN 61869-10
Symbol | Min | Typ | Max | Unit | |
Rated primary current 1) | Ipr | 3000 | A | ||
Rated secondary voltage @ Ip = 1kA 50Hz2) | Usr | 45 | mV | ||
Rated frequency | Fr | 50/60 | Hz | ||
Rated short-time thermal current @ 50Hz | Ith | 50 | kA | ||
Rated extended primary current | Iepr | 50 | kA | ||
Frequency bandwidth (-3dB) | BW | 0.01 | 70 | kHz | |
Rated phase offset 45 – 65Hz | φor | 90 | ° | ||
Phase displacement | Δφor | -0.5 | 0.5 | ° | |
Temperature coefficient | 0.005 | %/°C | |||
Coil resistance | 33 | Ω | |||
Accuracy (all positions) 3) | -1 | 1 | % | ||
Error due to external conductor 4) | 0.5 | % | |||
Operating temperature range (ambient) | -40 | 80 | °C | ||
Primary conductor temperature | 105 | °C | |||
Operating humidity (non-condensing) | 0 | 85 | % |
General Characteristics | |
Flammability rating – case material | UL94 V-0 |
Degree of protection | IP67 |
Insulation (Primary to Secondary) | Reinforced (7.4 kV ACRMS for 1 min) |
Voltage rating (EN 61010-1) | 1000 VRMS Category III, 600 VRMS Category IV, Pollution Degree 2 |
Sensor length (Typical) | 16” (406 mm) |
Maximum conductor diameter | 4.5” (115 mm) |
Sensor cable diameter | 8.9 mm |
Output cable length | 2m – 1m connector to splitter 1m splitter to sensor 3m – 2m connector to splitter 1m splitter to sensor 4m – 3m connector to splitter 1m splitter to sensor |
Connector | Customised Molex 50579210 |
EEPROM | Maxim DS2431+ |
1) The output from a Rogowski coil is linear and does not saturate like a conventional CT.
2) Output sensitivity is proportional to frequency, Rogowski coils need to be used with a suitable integrator.
3) At 23°C
4) External conductor of at least ⌀15 mm the same current level as internal conductor, perpendicular and in contact with the Rogowski coil
5) Only partially fulfills this standard as a Rogowski coils have fundamental differences compared to conventional CT’s
DS0139 Data Centre Datasheet 2021
DS0129 SlimSensor Datasheet 2021
Other literature available on request
Reports, drawings, technical data sheets, installation instructions, O&M guidelines
