R2M / RIC2VI / RMC2 / RSQ / RUFC2 / RVI / RSN protection and monitoring relays for generators and LV networks
Country: Spain · Model: R2M / RIC2VI / RMC2 / RSQ / RUFC2 / RVI / RSN
The relays R2M, R2MC, RIC2VI, RMC2, RSQ, RUFC2, RVI and RSN from the marine series protect generating sets and monitor the state of three-phase low-voltage networks. They are installed on diesel generator sets, in marine and onshore generating stations, in substations and in 0.4 kV switchgear.
- R2M / R2MC
- active power / current relay for a three-phase network; current input x/5 A, voltage input direct; setpoint on the front panel
- RIC2VI
- reverse power relay (anti-motoring) for generators in parallel operation; setpoint 2–15 % Pn
- RMC2
- electronic overcurrent relay per phase for three-phase generators; time delay indication
- RSQ
- phase sequence relay with an enabling contact 250 V, 8 A; 3 LEDs
Technical specifications
| R2M / R2MC | active power / current relay for a three-phase network; current input x/5 A, voltage input direct; setpoint on the front panel |
|---|---|
| RIC2VI | reverse power relay (anti-motoring) for generators in parallel operation; setpoint 2–15 % Pn |
| RMC2 | electronic overcurrent relay per phase for three-phase generators; time delay indication |
| RSQ | phase sequence relay with an enabling contact 250 V, 8 A; 3 LEDs |
| RUFC2 | min./max. voltage and frequency relay, three- and single-phase networks |
| RVI | monitoring of substation measuring circuits: current and voltage unbalance, over- and undervoltage; 2 alarm relays |
| RSN | marine protection relay for generating sets; RS485, USB (setup without auxiliary supply), up to 2 digital inputs |
| Standards | EN 60051, EN 61010; CE |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Most models are made in panel housings with light indication of operation and setpoints on the front panel, which are covered by a screw or a plug. R2M and R2MC measure active power or current in a three-phase network; the current input is x/5 A and the voltage input is direct. RIC2VI limits reverse power between two parallel generators with a setpoint of 2–15 % Pn at 50–60 Hz, and the kW scale corresponds to Un × In × √3 × cos φ. RMC2 monitors the current of each generator phase and shows the time delay countdown. RSQ shows the phase sequence with three LEDs (red L1-L3-L2, green L1-L2-L3, OK on operation) and gives an enabling contact of 250 V, 8 A, with a consumption of 1.2 VA. RUFC2 watches the minimum and maximum voltage and frequency. RVI detects current and voltage unbalance, overvoltage and undervoltage, and a current fault switches on one alarm relay and a voltage fault the other. RSN connects to a central post over RS485, setpoints are set with potentiometers or over USB without auxiliary supply, and up to two digital inputs are available.
How to choose
To protect against a generator switching to motoring mode take RIC2VI, for overcurrent per phase RMC2, and for measuring current or power with a threshold R2M or R2MC. The correctness of the phase connection is checked by RSQ, and voltage and frequency deviations by RUFC2. Monitoring of measuring circuits in substations with two alarm relays is done by RVI, and remote supervision of a generator with operation logs by RSN.
Request a price and lead time
R2M / RIC2VI / RMC2 / RSQ / RUFC2 / RVI / RSN protection and monitoring relays for generators and LV networks. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the setpoint of the RIC2VI reverse power relay?
2–15 % Pn at a frequency of 50–60 Hz. The relay works between two AC generators operating in parallel.
What contact and consumption does RSQ have?
An enabling contact of 250 V, 8 A and a consumption of 1.2 VA. The correct sequence is shown by the green LED, the reverse one by the red LED.
How can RSN be set up without auxiliary supply?
Through the USB port. Setpoints can also be set with potentiometers on the front panel, and data and logs are transmitted over RS485.
Which standards and CE declarations apply to these relays?
EN 60051 and EN 61010. CE declarations are available for R2M, RIC2VI, RMC2, RUFC2 and RSN.
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