The RCS-900T is a three-phase RopeCT by Magnelab that transforms an AC input current up to 5000 Amps to a 0.333 Volt output.
The RCS-900T is a three-phase RopeCT kit that comes with 3 RopeCTs (Rogowski Coils) and one integrator (signal conditioner) that converts the RopeCT voltage to 0.333 volt AC output. The integrator requires a DC power supply that operates between 9 and 36 Vdc. The RCS-900T has a 9″ opening and is made of very flexible material, allowing it to easily fit around conductors. If a true circle is not needed, such as in the case of a bus bar, the 9″ opening can be stretched to become much larger (1 ft or more).
The teardrop design of the RCS-900T allows for superior centering of the Rogowski coils (all Rogowski coils encounter small error if they are not perfectly centered). It is designed to allow a zip tie to be secured around the Rogowski coil, perfectly centering the primary conductor.
The RCS-900T, like other Rogowski coils, allows for very wide ranges of input currents. The product is designed to operate from 10% to 130% of the rated current with 1% accuracy. For example, the RCS-900T-250, which is the 250A version, will be 1% accurate from 25A to 325A.
The RCS-900T has these advantages in comparison to a traditional CT:
- Greater linearity
- High amperage measurement capability
- Extremely flexible
- Large circumferences available
- No shorting block required
Compatible power meters accept a voltage input. Look for meters on our website that start with this symbol:
If you are purchasing a Measurlogic, Veris or eGauge meter you do not need to purchase the RCS integrator (at least if ordered properly). Instead, you can use QTY 3 of the passive RCT-900T-000 (that comes without the integrator) and save money. If you are not using one of these 3 manufacturers, you will most likely need an integrator to compensate for the phase shift and low voltage output of the RCT-900T-000.
To see all the Magnelab “Tear Drop” Rogowski coil options click here.