RTU7K (PC2) - Control and Communication Unit, Measurement 3V + 31
SIL-G FEEDER & GENERATOR PROTECTION RELAY
- The RTU7.4 is derived from a well-established series of compact RTUs from ELVAC a.s., designed tor remote monitoring of energy networks, and further areas with high requirements tor system reliability androbustness. Thecompactdesignintegrates in one unit three-phase measurement of voltages and currents, digital inputs andoutputs, a communication moduleand a charger of backup batterieswhich is verycost-effective and simplifıes systeminstallation and maintenance. The unit can record the wavetorms of signals on analogue inputs triggered from fault events. Theserecords can be remotely downloaded and analyzed. Similarly, it is possible to remotely parameterize the unit and upgrade fırmware. The RTU7K PC2 version is fıtted with a more powerful communication card to support more demanding communication tasks.
@20 x digital input, periodical evaluation and filtering of input changes,
@ three-phase measurement of voltages and currents, periodical evaluation of values,
@5 x relay output, automation functions,
@ auxiliary contact ON REL, useful for example for disconnection of a devices connected to battery,
@ internal temperature of RTU is measured directly, another input for external sensor for environment measurement of RTU,
@ external power supply 10 V DC to 40 V DC, the voltage must be 5 V higher than voltage of a backup battery,
@ controlled charging of backup battery 12 V or 24 V. periodical testing of battery status (capacity),
@ protections - short circuit, overcurrent (time depending or not, directional or not), earth fault (directional or not) voltage, frequency, current and voltage asymmetry,
@ automation functions - reclosing, switch off in zero voltage pause,
@ time information is provided by master system (SCADA) or via GPS receiver,
@ optional extension via RS-485 - external 1/0 modules, another RTUs,
@ optional control via HMI terminals,
@ communication card COMI04 - RS-232/485, Ethernet, GPRS/ EDGE/UMTS, version PC2 additionally RS-422, CSD,
@ supported communication protocols - MODBUS, HIOCom2, IEC 60870-5-101, IEC 60870-5-103, IEC 60870-5-104, FTP, HTTP, @ version RTU7K PC2 supports also IEC 61850, DNP3, L2TP, DLMS secured communication according to IEC TS 62351-3 and another option according to user demands,
@ user programming by logical and relational expressions,
@ DIN rail or panel mounting.
Current inputs | | - |
Digital inputs | 20 x optocoupler, active or passive inputs, signaling voltage 24 V |
Digital outputs | 4 x relay (NO contact 3 A / 240 V AC / 30 V DC), 1 x relay (changeover contact 5 A / 240 V AC / 30 V DC) |
Communication cards | COMIO-PC2 |
Communication interfaces | Depending on the type of communication card - Ethernet LAN,RS-232/422/485 FME with card |
Antenna connector | - |
Power supply voltage | 10 V DC to 40 V DC |
Voltage of backup battery | 12 |
Max. charging current of battery | lA |
Max. maintenance battery voltage | 13.7 V, |
Switch off voltage (battery protection) | 11 V, |
Temperature sensor | Measured range -55 °C to 125 °C, accuracy ±0.5 °C in range -10 °C to 85 °C |
Operating temperature | -25 °C to 50 °C (possible increase up to 65 °C - on demand) |
Storage temperature | -30 0C to 75 0C |
Ambient relative humidity | 5 % - 95 % non-condensing |
Dimensions | 157 x 90 x 60 mm (W x H x D) without connectors |
Ingress protection | | IP20 (IP21 with protection cover - for free on demand) |
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