Technical description of GZDW intelligent high-frequency switch DC power supply device
产品型号说明 I. Product model description
Second, the main technical parameters:
|AC input rated voltage: three-phase four-wire AC380V ¡À 15% (or three-phase three-wire AC380V); single or double line incoming||AC input rated frequency: 50Hz (¡À 10%)|
|Voltage range during floating charge: DC 198 ～ 260V (110V system: DC 99 ～ 130V)||Voltage range during charging: DC 220 ～ 286V (110V system: DC 110 ～ 143V)|
|Charging module output rated current: N ¡Á 10A (or N ¡Á 20A); maximum limit current 110% In||Output current limit: 0% ～ 110% In adjustable|
|Load adaptability: can work normally within 0% ～ 110% of current rating||Battery charging current limit: continuously adjustable within 10% ～ 100% output current rating|
|Ripple coefficient: ≤0.5% (typical value 0.5%)||Regulation accuracy: ≤ ¡À 0.5% (typical value 0.1%)|
|Static current accuracy: ≤ ¡À 0.5%||Current imbalance between charging modules: ≤ ¡À 0.5%|
|Efficiency: ＞ 90%|| Cabinet noise: ≤55dB (1m away from the screen) |
Cabinet parameters: (height x width x depth) |
Altitude: ＜ 2000m
Ambient temperature: -10 ℃ ～ 45 ℃
Relative humidity: 90% (25) ℃
Earthquake grade: 7
Installation location: indoor
Design, manufacturing and inspection standards
GB 3859.1-1993 semiconductor power converter
GB 13337.1-91 Technical conditions for solid acid proof lead-acid batteries
GB 50172 Code for battery construction and acceptance of electrical installation engineering
DL / T 459-92 Nickel-cadmium battery DC screen order technical conditions
DL / T 637-1997 Valve-regulated sealed lead-acid battery ordering technical conditions
DL / T 5044 DC design technical specifications for thermal power plants and substations
JB / T 8456-1996 low-voltage DC complete switchgear
ZBK 45017 General technical requirements for DC screen for power system
ZBK 45020 General technical requirements for power system protection and automatic relay
Q / SMOY 1-2000 Microcomputer Monitor DC Power Supply Cabinet for Power System
V. Main performance characteristics
system intelligently completes the equalization and floating charge functions of 18 12V (or 108 2V) maintenance-free batteries; all monitoring can be completed through a 7-inch color touch screen human-machine interface and Chinese menu settings.
system adopts two-phase incoming AC power supply mode and can be automatically switched; it has AC input over-voltage, under-voltage, over-current, phase loss protection, and the dial is equipped with the bus voltage, bus voltage, load current, and charging and discharging ammeter .
system has a DC-controlled bus insulation monitoring function, which can monitor the grounding polarity and grounding resistance of the DC buses of each branch online in real time, so as to realize the alarm of abnormal bus voltage and insulation reduction.
has the function of battery voltage patrol detection, which can monitor the quality of a single battery of the battery pack in real time, and provide a fault alarm to ensure the safe operation of the system.
high-frequency switch module adopts N + 1 redundancy scheme, which is powered by several Emerson 10A / 220V (or 20A / 220V) intelligent high-frequency switch modules in parallel, automatically shares current, and can be hot-plugged with power. When one charging module fails, other modules can continue to work without affecting the output voltage. In addition, the high-frequency switch module has perfect over-voltage, over-current, over-temperature, and short-circuit protection functions, and can independently display the output voltage and current of the module.
high-frequency switch module adopts a working method that does not rely on the upper-level monitoring. When the monitoring module fails, the high-frequency switch module can continue to charge the battery normally according to the preset conditions to ensure the safe power supply of the system.
With normal working light indication and audible and visual alarm in case of failure, it has 2 pairs of external alarm ports with normally open and normally closed points.
has the function of communicating with the host computer, and provides RS232 / RS485 remote data communication interface to the outside. The communication protocol is Modbus.
All core components of the system are Emerson ER22010 / ER22020 intelligent high-frequency charging module, EMU10 touch screen monitoring module, EAU01 AC power distribution monitoring module, EDU01 DC power distribution monitoring module, EGU01 insulation monitoring module, EBU01 (EBU02) battery inspection module. Extremely high reliability and universal interchangeability.
DC feed-out switch selects well-known brands such as Siemens, ABB, Schneider and Beijing People.
Maintenance-free accumulators are selected from well-known brands such as German Herbbeck, Sunshine, Japanese Panasonic, Yuasa.
Cabinet structure: The front door is a large-view glass outer door, the upper and lower double-instrument inner doors, and the rear door is a double-opening door structure. The cabinet is beautiful and elegant, and the components are interchangeable. The cabinet has sufficient strength and rigidity to ensure that it can be hoisted during lifting. The cabinet and internal components will not be distorted.