2.1 Summary
2.1.1 VOLTLOGIC-351 ARC controller is a new generation of digital relaying control terminal produced . It can protect, control, measure and monitor the grid with voltage below 35kV. It is suitable for a variety of system operating modes, including isolated neutral system, resistance-grounded system and arc suppression coils grounding system.
Figure1: VOLTLOGIC-351 Device Panel
VOLTLOGIC-351 series device collect full power value and isolate the measurement current circuit from the protection current circuit, which not only improve the reliability of protection but also ensures the measurement accuracy. High-precision measurement function ensures the factor of voltage, current and power to grade 0.2, as well as the factor of grade 0.5 to four- quadrant power measuring and metering.
VOLTLOGIC-351 series supports function of time setting. Two RS485 channels support for the double-net communication mode as well as the communication protocol of Modbus IEC60870-5-101 . DNP3.0 . It provides extremely reliable net communication for the users, for different protocols could be applied into different networks.
VOLTLOGIC-351 is able to restore four groups of setting value, which greatly facilitates different operating mode.
2.2 Main characteristics
Rich interface resources
The interface resources provided by VOLTLOGIC-351 are: the input passband of 7 channels AC current and 4 channel AC voltage. 10 channel switching value input passband (suitable for AC and DC), 7 channel switching value output; the communication interface has two RS485 and one RS232 maintenance ports.
Flexible and convenient connection method
The four AC voltage inputs of VOLTLOGIC-351 can connect with the phase voltage, Line voltage or zero-sequence voltage or unbalanced voltage, which adapt to a variety of PT Connection.
Highly reliable design
With the design principles of stable, reliable and durable, industrial components are adopted, all connections with the outside world are fully isolated as well as anti-lightning protection circuit and power filter are built in. Professional EMC design provides a fundamental guarantee for the reliability of operation through real-time monitoring towards the device input power, analog and digital power supply, as well as perfect self-check program. To monitor the input power helps VOLTLOGIC-351 to save the important data in good time before the power is removed.
event record in order
VOLTLOGIC-351 will provider users 200 pieces of SOE for fault analysis (100 is a circle, namely, the next first SOE will cover the 101 SOE), the resolution of SOE is 1ms. SOE can not only record various protection actions but also filtered switching value deformation, as well as other information for fault analysis, which includes power-on, power-down, reset, self-test error of device and signal reversion, remote operation, modification of protection valuation.
High-precision measurement
The measurement function of VOLTLOGIC-351 can measure IA, IB, IC, I0, Ua, Ub, Uc, Uab, Ubc, Uca, P , Q, F, fs, PF precisely and monitor the protection current Ia、Ib、Ic, as well as measurement towards forward kWh, reverse kWh, forward kVarh, forward kVarh. The measurement accuracy of voltage, current and power factor reaches to grade 0.2, the accuracy of power and electric degree reaches to grade 0.5. The maximum frequency measurement bias is ±0.01Hz calculation error caused by fundamental frequency fluctuation can be eliminated completely through adopting the frequency tracking technique, and real-time monitoring the changes of system frequency, as well as adjusting the time interval of data sampling.
Accurate time setting
VOLTLOGIC-351 has three types of time setting: time setting of artificial device panel, communication time setting. Among them, artificial instrument panel is rough time setting, generally for debugging; and the precision of communication time setting is less than± 100ms; Accurate time setting ensures the reliability of SOE information, and enhances their value in the fault analysis. Particularly, the clock accuracy will not be affected (the clock keeps on running) even when reset or short-term power-down occur.
2.3 Performance index
Rated data
- Power: 110/220VDC or VAC , allowable deviation ＋15℅, －20℅;
- 24/48 VDC, allowable deviation ＋15℅, －20℅.
- 220VDC or VAC gap break (IEC 60255-11) 100 ms device without losing power
- AC voltage: 100V or 100/ 3 V, linear measurement range is 0.2V～150V.
- AC current: 5A, 1A
- Measuring linear range is 0.01A～6A(5A) or 0.002A～1.2A(1A);
- Protecting linear range is 0.1A～120A(5A) or 0.02A～24A(1A);
- I0 measuring linear range is0.02A～20A or 0.004A～4A is optional.
- Frequency: 50Hz, the measurement range is 45.00 Hz～55.00 Hz.
- OR 60Hz, the measurement range is 55.00 Hz～65.00 Hz
- Phase sequence: ABC
0 Comments