BELplus OZE — protection and telecontrol terminal for MV/LV substations of distributed generation facilities (PV plants)
BELplus OZE is a digital protection relay terminal for protection and control of MV and LV switchgear at distributed generation facilities connected to the grid through an LV/MV transformer, in particular at PV plants. The device also works as a telecontrol controller and a disturbance recorder, and performs automation and station interlocking functions. The protections meet the requirements of the Polish IRiESD instruction of distribution system operators.
- Purpose
- protection and control of MV and LV switchgear at generation facilities connected through an LV/MV transformer
- Measurements
- two packages: MV side (3Uph, 3U0, U4; 3Iph 5 A, 3I0 1 A) and LV side (3Uph up to 300 V, U0; 3Iph 5 A, I0 1 A)
- Inputs/outputs
- 30 discrete inputs, 19 outputs
- Functions
- overcurrent, max/min voltage, frequency protections, MV and LV auto-reclosing, breaker failure (LV breaker backed up by MV breaker)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The terminal measures electrical quantities on both the MV side and the LV side of the transformer, that is on the primary and secondary side of the MV/LV transformer of a renewable energy source facility, as required by the latest guidelines of grid operators. The protection set is selected for such facilities. It includes overcurrent protections, overvoltage and undervoltage protections, frequency protections, automatic reclosing after separation from the grid and other functions under IRiESD, the Polish distribution network operation instruction. The configuration is easily adapted to the facility, standards and user requirements.
As standard the device has 30 discrete inputs and 19 control outputs for monitoring the switchgear and controlling MV and LV circuit breakers, and the MV circuit breaker control circuits have integrity supervision. There are two measurement packages. On the MV side the terminal receives three phase voltages, 3U0 and U4 (up to 100/120 V), three phase currents with a rating of 5 A and a range up to 20 In, and a 3I0 current with a rating of 1 A. On the LV side phase voltages up to 300 V and U0, three phase currents of 5 A and I0 of 1 A are applied.
The aluminium profile enclosure has a color touch display, programmable LEDs and control buttons. The device stores 4 setting groups with automatic switching, keeps an event log and a disturbance recorder, and shows and records the readings of the P and Q energy meters through a built-in web page. It has built-in MV and LV side auto-reclosing, self-supervision and an internal breaker failure function, where the LV circuit breaker is backed up by the MV circuit breaker. The terminal simultaneously supports two communication channels to SCADA, the grid operator and the facility owner, as well as a remote engineering channel for changing parameters and logic. Configuration is done in the BEL Navi program.
The supply is 24 V DC, the consumption is not more than 22 W. The main telecontrol channel and the engineering channel work over Ethernet 10/100BASE-TX, the backup channel over RS422, the owner SCADA is connected to RS232, the protocol is DNP 3.0. The flush-mounted enclosure measures 218 × 218 × 185 mm, weighs not more than 5 kg, has a degree of protection of IP20 and operates at a temperature of −10…+55 °C. The terminal is manufactured in Poland.
Technical specifications
| Purpose | protection and control of MV and LV switchgear at generation facilities connected through an LV/MV transformer |
|---|---|
| Measurements | two packages: MV side (3Uph, 3U0, U4; 3Iph 5 A, 3I0 1 A) and LV side (3Uph up to 300 V, U0; 3Iph 5 A, I0 1 A) |
| Inputs/outputs | 30 discrete inputs, 19 outputs |
| Functions | overcurrent, max/min voltage, frequency protections, MV and LV auto-reclosing, breaker failure (LV breaker backed up by MV breaker) |
| Supply | 24 V DC, ≤ 22 W |
| Communication | ETH 10/100BASE-TX, RS422, RS232; DNP 3.0; two SCADA channels (grid operator and owner) |
| Enclosure | 218×218×185 mm, ≤ 5 kg, IP20, −10…+55 °C |
Request a price and lead time
BELplus OZE — protection and telecontrol terminal for MV/LV substations of distributed generation facilities (PV plants). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What facilities is BELplus OZE intended for?
For MV and LV switchgear at distributed generation facilities connected to the grid through an LV/MV transformer, for example at photovoltaic plants. The protections meet the requirements of IRiESD of distribution system operators.
How many inputs and outputs does the terminal have?
As standard 30 discrete inputs and 19 outputs for controlling MV and LV circuit breakers. There are two measurement packages, separately for the MV side and the LV side.
What supply and communication does the device have?
The supply is 24 V DC, the consumption is not more than 22 W. Communication is over Ethernet 10/100BASE-TX, RS422 and RS232 using the DNP 3.0 protocol.
Similar equipment from other manufacturers
