Evada GZDW DC (screen) manual ENG

GZDW series DC power cabinets are suitable for power distribution rooms in 10-500kV substations, power plants, high-rise buildings, residential quarters, etc., as well as smallSelf-contained power plant serves as the operation and control power supply for high-voltage switches, relay protection, automatic devices, etc. and emergency lighting power supply. It can also be applied toOther places requiring DC power supply.This product complies with:GB/T 19826-2005 "General technical conditions and safety requirements for DC power supply equipment in power engineering"GB/T8456-1996 "Low Voltage DC Switchgear Complete Sets" and other relevant regulations.2. Use environmental conditions1. Ambient temperature: -10ÿÿ+45ÿ;2. Altitude: no more than 2400m;3. Relative humidity: the daily average value is not greater than 95%, and the monthly average value is not greater than 90%;4. Earthquake intensity: no more than 8 degrees;5. Installation vertical inclination: no more than 5°;6. Places without risk of fire, explosion, serious pollution, chemical corrosion and severe vibration;7. Microcontroller anti-noise: 1000V 1µS pulse for 1 minute;8. No interference from strong electromagnetic fields;9. If the usage environment is inconsistent with the above, it shall be resolved through negotiation between the user and the manufacturer.3. Model meaningNote: Battery type: C ultra-high-rate cadmium-nickel battery; G high-rate cadmium-nickel battery; Z medium-rate cadmium-nickel battery;F Acid-proof lead-acid battery; M Maintenance-free lead-acid battery.-- 2 --4. Main technical parameters1. The AC input power supply is two-way three-phase four-wire main power supply and backup power supply. Rated input voltage: three-phase four-wire AC 380V±15%, frequencyRate 50Hz±5%;2. Lightning strike protection: higher than 2000:1;3. Rated output DC voltage: 110V, 220V;4. Rated output current: 6A, 10A, 15A, 20A, 30A, 40A, etc. (up to 600A); 5. Battery rated capacity: 7Ah, 10Ah, 20Ah, 24Ah, 38Ah, 65Ah, 100Ah, 200Ah, 300Ah, 500Ah, 800Ah, 1000Ah, 1500Ah, 2000Ah, 3000Ah; 6. Machine noise: 55dB;7. Working method: continuous working;8. Voltage stabilization accuracy: ÿ0.5%;9. Steady flow accuracy: ÿ0.5%; 10. Ripple coefficient: ÿ0.1%;11. Uneven fluidity of parallel machines: ÿ5%;12. Power factor: ÿ0.99; 13. Protection level: IP20;14. Technical parameter table of three types of batteries:—-3--5. Module and monitoring system selection1. High-frequency rectifier module configuration (C10 is the battery capacity)ÿ Control bus without rectifier module0.1×C10+regular load current+1 moduleNumber of modules ÿrated currentÿ The control bus has a rectifier module0.1×C10The number of modules on the combined mother ÿ+1 Module rated current Regular load currentThe number of modules on the control mother ÿmodule rated currentThe modules (rated current) produced by our company include: 2A, 5A, 10A, 20A, etc.—- 4 --2. Monitoring configurationThe monitoring unit of the DC system is responsible for the control of the high-frequency rectifier module, battery charging management, AC input detection, DC bus voltagedetection alarm. Insulation monitoring and insulation status detection of each output branch of the DC panel, battery pack inspection and discharge detection functions, and AC and DC power distribution re-Status switch detection and alarm function of important components, output feeders, etc., detection of communication modules, inverter modules, etc.The organizational structure is shown below:AC detection unitComputer backend or DC detection unit power automation systemcharging moduleRS232/ 485charging modulePSM series monitoringBattery inspection unitInsulation detection unitSwitch detection unit Operation displayCommunication moduleInverter moduleoptional unitRS485 bus—-5--3. Battery capacity configuration principlesÿ To meet the continuous discharge condition of accident power outage, the accident time is selected as 1 hour;ÿ The remaining capacity when closing at the end of discharge shall not be less than 25% of the rated capacity;ÿ Ensure that the DC bus voltage does not drop by more than 10% when an impact load occurs;ÿ For maintenance-free batteries, the closing current generally does not exceed 4C