4SLV / 5LVS 0.4 kV network monitoring system for substations
Country: Spain · Model: 4SLV / 5LVS
The 4SLV / 5LVS 0.4 kV network monitoring system monitors every outgoing LV feeder in a substation board using LPCT current sensors, 5CTI measuring units and the 4SLV controller. Network companies install it to see the energy balance by line, phase unbalance and the real assignment of meters to feeders.
- Composition
- LPCT current sensors, 5CTI measuring units, 4SLV controller
- Functions
- monitoring of every outgoing LV feeder, energy balance, phase balancing, assigning meters to feeders
Technical specifications
| Composition | LPCT current sensors, 5CTI measuring units, 4SLV controller |
|---|---|
| Functions | monitoring of every outgoing LV feeder, energy balance, phase balancing, assigning meters to feeders |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The LPCT sensors are mounted on the cables of outgoing lines, have a low-voltage output and take little space in a tight LV board. The 5CTI measuring units process the sensor signals, and the 4SLV controller consolidates the data of all feeders of the substation. The energy balance compares the energy at the start of a feeder with the sum of readings of the meters assigned to it, and so localizes a line with losses or unaccounted consumption. The phase balancing function shows which phase is overloaded, so a crew moves some consumers to another phase without extra measurements with clamp meters. Assigning meters to feeders restores the real network topology, which after years of switching often differs from the diagram. Accurate topology is needed both for the balance calculation and for quickly finding the consumers affected by a line outage.
How to choose
The scope of the set is determined by the number of outgoing feeders in the substation board, since monitoring is done for each of them. The energy balance calculation needs the readings of consumer meters, so it makes sense to install the system where 5CTB or 5CTA meters already work. Collecting these readings at the substation is handled by the 4DCT / 4GWC concentrator with PRIME 1.3/1.4 and Meters & More. If the task is limited to remote metering without per-feeder analysis, meters and a concentrator without the 4SLV / 5LVS are enough.
Request a price and lead time
4SLV / 5LVS 0.4 kV network monitoring system for substations. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What does the 4SLV / 5LVS monitoring system consist of?
LPCT current sensors on the outgoing lines, 5CTI measuring units and the 4SLV controller, which combines the data of all feeders of the substation.
How can a feeder with commercial losses be found in a 0.4 kV network?
The 4SLV / 5LVS calculates the energy balance separately for each outgoing feeder. A large difference between the energy at the head of the line and the sum of readings of the assigned meters shows where to look for losses or an unauthorized connection.
Why assign meters to LV feeders?
Without accurate topology the balance for a line cannot be calculated, and outage reports are hard to match to a feeder. The system establishes which feeder each meter is supplied from.
Does the 4SLV show phase unbalance on a feeder?
Yes, phase balancing is among the functions of the system. From the data for each phase of the feeder it is clear which consumers should be moved to a less loaded phase.
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