The design of Renda micro-monitoring DC screen refers to the Ministry of Electric Power's "DL/T5044-2004", "JB/5777.2-2002" and "JB/5777.3-2002" and other relevant technical standards, which can reliably meet the power supply needs of DC control power supply and high and low voltage switch switching and closing in normal or abnormal state of the transmission and distribution system. It is widely used in substations below 500KV and power plants below 600,000KW for DC operation power demand.
The field of use of Renda micro monitoring DC screen: metallurgy, automatic control, relay protection, substation, hotel building substation and distribution, etc.
Peculiarity
1. Using high-frequency switching power supply technology, modular design, N+1 hot backup.
2. Wide voltage input range, strong adaptability of power grid.
3. The charging module can be plugged and unplugged with electricity, and the maintenance is convenient and fast.
4. Have reliable lightning protection and electrical insulation protection measures to ensure system and personal safety.
5. Using large screen touch screen, dot matrix LCD display, CCFL backlight, to achieve full Chinese real-time display and operation.
6. System parameter query and setting can be carried out by clicking the touch screen, and the man-machine interface is friendly and the operation is simple and convenient.
7. The monitoring system can automatically complete the accurate management of battery voltage, charge and discharge current and temperature compensation to ensure that the battery works in the best state and prolongs the service life of the battery.
8. Adopt a distributed monitoring system with microprocessor as the core, modular design, implement a full range of monitoring, control and power supply system "four remote" of the power system, and realize unattended.
9. Real-time monitoring of battery terminal voltage, charge and discharge current, accurate control of battery average charge and floating charge, with battery over-under-voltage alarm, battery over-temperature alarm and overcharge protection and other functions.
10. The system has the management function of battery temperature compensation.
11. A set of monitoring system can be used to manage double battery packs, three groups of charging devices, and bus bar segments to realize independent charging management of double sets of batteries.
12. Intelligent high-frequency switching DC power supply device is in the summary of advanced and mature design, operation experience and development trend in the field of DC power supply for power system.
Natural environmental parameters
Altitude: 2 0 0 0 m
Ambient temperature: - 5°C – + 5 0°C
Relative humidity: ≤9 0 % (2 0±5 °C
No conductive and explosive dust, no corrosive gas
No severe vibration and shock
Use indoors and well ventilated
System parameters
Input voltage range: A C 3 0 4 V ~ 4 5 6 V
Input grid frequency: 5 0 H z ± 1 0 %
Power factor> 0 . 9 5
Efficiency> 9 5 %
Output voltage: 1 8 0 V ~ 2 8 6 V continuously adjustable (2 2 0 V systems)
9 0 ~ 1 4 3 V continuous adjustable (1 1 0 V system)
Output current 1 0 ~ 1 0 0 % continuously adjustable
Ripple coefficient≤ 0 . 1 %
Voltage regulation accuracy≤± 0 . 5 %
Current stabilization accuracy≤± 0 . 5 %
Current sharing characteristics: Current imbalance between charging modules≤± 3 %
