Current Sensors SS-10(20)
Monitoring control and protection – smart grids
- Substation remote control (switchyard) 10(20)/0,4 kV
- Intelligent electronic devices IED
- Monitoring and Control Terminal UST-10Gc
- Info Terminal IT-1
- Monitoring and Control Terminal UST-3
- Monitoring and Control Terminal UST-4
- Monitoring and Control Terminal UST-10G
- Input Output Unit DIO 16-8
- Feeder Terminal TP-10
- Measuring Terminal MT-10SQ
- Measuring Terminal MT-20S
- Measuring Terminal MT-30S
- Measuring Terminal MT-40
- Measuring Terminal MT-40S
- Preamplifier PP-10
- Uninterruptible power supply system BN-15
- Uninterruptible power supply system BN-20
- Uninterruptible power supply system BN-30
- Switchgear remote control
- Ground fault and short circuit detection and indication in cable grids
- Ground fault and short circuit detection and indication in overhead grids
- Communication equipment
Unconventional Current Sensors of the SS-10 (20) series are used as fault detectors within the IK-5, SIK-10 and SIK-20 Fault Indication System. Current sensors are split core type and are very easily mounted on cables. SS-10 sensors are used for detecting ground fault and short-circuit currents, i.e. measuring current IL1, IL2, IL3.
If the ground fault current is greater than 20A, it is sufficient to set up one SS-10 type sensor on the cables of each phase. The Fault Indicator calculates the current Io based on the phase currents. When greater Io detection sensitivity is required i.e. for the ground fault currents less than 20A, two SS-10 sensors are set up on the two cables (phase L1 and L2), and the SS-20 type sensor is mounted on all three cables and measures the current Io. The sensors are mounted on the insulated part of the medium voltage cable using 350-400 mm cable ties. The grounding shields of the cables should be mandatory threaded through the sensors (fig. 2 and 3).
Both sides of split cores should be folded on the non-insulated part and tightened using a clamp on the upper part of the sensor.
- removable split core type sensors, very simple for mounting on medium voltage cables
- two types of sensors SS-10 and SS-20 depending on the ground fault sensitivity
- detection of ground fault (Io) and short circuit (I>>)
- current measurement IL1, IL2, IL3, Io
- IP67 protection