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substations, thermal power plants, hydropower plants and other places needing DC power supplies.
SZPW
Floor standing
Sanhe
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Product overview
SZPW power system microcomputer high-frequency switching DC power supplies are highly stable new-generation power system DC operating power supplies designed and produced by our company based on our years of experience in the development and operation maintenance of DC power supplies. Serving as control loads, power loads and DC emergency lighting loads, the products apply to substations, thermal power plants, hydropower plants and other places needing DC power supplies.
Model description
Product features
Flexible configuration and convenient expansion because of full automatic current-sharing N+1redundant modular design;
Small voltage distortion, high efficiency, high accuracy of voltage and current stabilization, small ripple factor and good electrical properties and electromagnetic compatibility because of the advanced power factor correction technology, the LLC resonant DC/DC conversion technology and the soft switching technology used for the rectification module;
.Complete protections such as output overvoltage protection, output current limit protection, short circuit protection, overtemperature protection, overcurrent protection, fault alarming for the rectification module;
Convenient hot plugging and online maintenance of the charging module;
Hardware low voltage difference automatic current-sharing technology and a current-sharing unbalance equal to or less than ±3% among modules;
High stability because of two AC inputs (a master one and a slave one) supporting automatic switching;
Applicability to even areas with unstable power supply because of great adaptability to grids as a result of an extremely wide AC input range up to AC380V±20%;
Online parameter detection and fault alarming, as well as quicker operation, more functions and higher integration because of an industrial microprocessor that is the core of the intelligent monitoring unit;
Large LCD or touch screen of the monitoring unit, that is characterized by centralized display and unique Chinese or English directed human-machine interface with simple, visualized and easy operation and extremely low misoperation rate;
A standard serial communication port supporting multiple communication protocols and realizing unattended operation, telemetering, remote control, remote signaling and remote adjusting by communication with a host computer;
Longer life and less maintenance because of automatic charge, discharge and maintenance and online temperature monitoring of the battery supported by the advanced intelligent battery management technology; (Optional)
Effective absorption and prevention of grid surges and higher harmonics by a class-C lightning protection device and safety of itself and people guaranteed by a high-strength electric insulation measure;
High quality and good performance because of parts of domestic or international famous brands
Operating conditions
Altitude: ≤2500m
Ambient temperature: -10℃～+45℃
Relative humidity: The daily average ≤95％,the monthly average≤90％：
No violent vibration, strong heat source, corrosive gas or conductive dust on the installation site
No strong electromagnetic interference but an external magnetic field induction intensity not more than 0.5Mt on the installation site
Declination: ≤5% in installation
AC sine power supply with anon-sinusoidal wave content of 10% at most
Three-phase five-wire power supply with voltage asymmetry not more than 5%
Standards
General specification and safety requirements for DC power supply equipment of power projects
Specifications of D.C supply cabinet in power system
General technical requirements for DC cabinets of power systems
Technical data
AC input: 380VAC±20%，50Hz±10%；
Output voltage: DC99-143V、DC198～286V；
Voltage stabilization accuracy: ≤±0.2%；
Current stabilization accuracy: ≤±0.2%；
Ripple factor: ＜0.02%；
Full-load efficiency: ≥96％；
MTBF: more than 100 thousand hours;
Power factor: ≥0.95；
Current-sharing unbalance: ≤±3%；
Noise: ≤55dB；
Insulation resistance: ≥20MΩ.
Functions
Basic functions: intelligent battery management, system parameter setup, DC parameter detection, AC parameter detection, audible and visual alarms for system faults, real-time detection for the insulation resistances of buses and automatic voltage stabilization for the control bus;
Extended functions: battery inspection, branch insulation inspection, feed switch status detection, DC/AC inverter output, DC/DC reduced voltage output and AC distribution output
Types
SZPW－U Integrated DC power supply;
SZPW－C Combined DC power supply;
SZPW－L Large-capacity DC power supply;
SZPW－F Wall-mounted DC power supply.
SZPW-U integrated DC power supply
It integrates a charging module, a feed module and a battery module. It is made up of one cabinet and applies to DC power supply systems of 40Ah/220V or 65Ah/110V or below. It has two 380VAC or 220VAC inputs supporting automatic switching and a DC output made up of four control buses with 2P/16A air switch and four closing buses with 2P/25A air switch. It essentially consists of a LCD or touch-screen microcomputer monitoring unit, a charging module, a bus insulation flashing device (or a branch insulation detection unit), a voltage reduction silicone assembly and an optional battery inspection unit, a switching unit and a cabinet. The cabinet (800×600×2260) has two doors, including a tempered glass single-leaf door on its front and a cold-rolled steel sheet double-leaf door on its back.
ZPW-C combined DC power supply
It is composed of two cabinets, i.e. a charging and feed cabinet and a battery cabinet and applies to DC power supply systems of 100Ah/220V or 200Ah/110V or below. It has two 380VAC or 220VAC inputs supporting automatic switching and a DC output made up of five control buses with 2P/20A air switch and four closing buses with 2P/32A air switch. It essentially consists of a LCD or touch-screen microcomputer monitoring unit, a charging module, a bus insulation flashing device (or a branch insulation detection unit), a voltage reduction silicone assembly and an optional battery inspection unit, a switching unit and two cabinets. Each of the cabinets (800×600×2260) has two
doors, including a tempered glass single-leaf door on its front and a cold-rolled steel sheet double-leaf door on its back.
SZPW-L large-capacity DC power supply
It is composed of a charging cabinet, feed cabinet and a battery cabinet and applies to DC power supply systems of 100Ah/220V or 200Ah/110V or above. It has two 380VAC or 220VAC inputs supporting automatic switching and a DC output made up of at least five control buses with 2P/25A air switch and at least four closing buses with 2P/40A air switch or several other feeder lines. It essentially consists of a LCD or touch-screen microcomputer monitoring unit, a charging module, a bus insulation flashing device (or a branch insulation detection unit), a voltage reduction silicone assembly and an optional battery inspection unit, a switching unit and three cabinets. Each of the cabinets (800×600×2260) has two doors, including a tempered glass single-leaf door on its front and a cold-rolled steel sheet double-leaf door on its back.
SZPW-F wall-mounted DC power supply
It is specially designed for small-capacity systems and applies to DC power supply systems of 38Ah/220V or 65Ah/110V or below. It has two 220V inputs or one 220V, PT100V AC input and a DC output made up of two 2P/16A control buses and two 2P/32A closing buses. It essentially consists of a special LCD microcomputer monitoring unit, a charging module, an automatic voltage reduction unit and a cabinet. With an LCD, dialog menus and buttons, the microcomputer monitoring unit can realize setup, display and calibration for operating parameters, battery management, monitoring for battery voltage, control bus voltage, closing bus voltage, battery’s charging current and discharging current and charging module status. The cabinet can be a floor type or a wall-mounted type.
Product overview
SZPW power system microcomputer high-frequency switching DC power supplies are highly stable new-generation power system DC operating power supplies designed and produced by our company based on our years of experience in the development and operation maintenance of DC power supplies. Serving as control loads, power loads and DC emergency lighting loads, the products apply to substations, thermal power plants, hydropower plants and other places needing DC power supplies.
Model description
Product features
Flexible configuration and convenient expansion because of full automatic current-sharing N+1redundant modular design;
Small voltage distortion, high efficiency, high accuracy of voltage and current stabilization, small ripple factor and good electrical properties and electromagnetic compatibility because of the advanced power factor correction technology, the LLC resonant DC/DC conversion technology and the soft switching technology used for the rectification module;
.Complete protections such as output overvoltage protection, output current limit protection, short circuit protection, overtemperature protection, overcurrent protection, fault alarming for the rectification module;
Convenient hot plugging and online maintenance of the charging module;
Hardware low voltage difference automatic current-sharing technology and a current-sharing unbalance equal to or less than ±3% among modules;
High stability because of two AC inputs (a master one and a slave one) supporting automatic switching;
Applicability to even areas with unstable power supply because of great adaptability to grids as a result of an extremely wide AC input range up to AC380V±20%;
Online parameter detection and fault alarming, as well as quicker operation, more functions and higher integration because of an industrial microprocessor that is the core of the intelligent monitoring unit;
Large LCD or touch screen of the monitoring unit, that is characterized by centralized display and unique Chinese or English directed human-machine interface with simple, visualized and easy operation and extremely low misoperation rate;
A standard serial communication port supporting multiple communication protocols and realizing unattended operation, telemetering, remote control, remote signaling and remote adjusting by communication with a host computer;
Longer life and less maintenance because of automatic charge, discharge and maintenance and online temperature monitoring of the battery supported by the advanced intelligent battery management technology; (Optional)
Effective absorption and prevention of grid surges and higher harmonics by a class-C lightning protection device and safety of itself and people guaranteed by a high-strength electric insulation measure;
High quality and good performance because of parts of domestic or international famous brands
Operating conditions
Altitude: ≤2500m
Ambient temperature: -10℃～+45℃
Relative humidity: The daily average ≤95％,the monthly average≤90％：
No violent vibration, strong heat source, corrosive gas or conductive dust on the installation site
No strong electromagnetic interference but an external magnetic field induction intensity not more than 0.5Mt on the installation site
Declination: ≤5% in installation
AC sine power supply with anon-sinusoidal wave content of 10% at most
Three-phase five-wire power supply with voltage asymmetry not more than 5%
Standards
General specification and safety requirements for DC power supply equipment of power projects
Specifications of D.C supply cabinet in power system
General technical requirements for DC cabinets of power systems
Technical data
AC input: 380VAC±20%，50Hz±10%；
Output voltage: DC99-143V、DC198～286V；
Voltage stabilization accuracy: ≤±0.2%；
Current stabilization accuracy: ≤±0.2%；
Ripple factor: ＜0.02%；
Full-load efficiency: ≥96％；
MTBF: more than 100 thousand hours;
Power factor: ≥0.95；
Current-sharing unbalance: ≤±3%；
Noise: ≤55dB；
Insulation resistance: ≥20MΩ.
Functions
Basic functions: intelligent battery management, system parameter setup, DC parameter detection, AC parameter detection, audible and visual alarms for system faults, real-time detection for the insulation resistances of buses and automatic voltage stabilization for the control bus;
Extended functions: battery inspection, branch insulation inspection, feed switch status detection, DC/AC inverter output, DC/DC reduced voltage output and AC distribution output
Types
SZPW－U Integrated DC power supply;
SZPW－C Combined DC power supply;
SZPW－L Large-capacity DC power supply;
SZPW－F Wall-mounted DC power supply.
SZPW-U integrated DC power supply
It integrates a charging module, a feed module and a battery module. It is made up of one cabinet and applies to DC power supply systems of 40Ah/220V or 65Ah/110V or below. It has two 380VAC or 220VAC inputs supporting automatic switching and a DC output made up of four control buses with 2P/16A air switch and four closing buses with 2P/25A air switch. It essentially consists of a LCD or touch-screen microcomputer monitoring unit, a charging module, a bus insulation flashing device (or a branch insulation detection unit), a voltage reduction silicone assembly and an optional battery inspection unit, a switching unit and a cabinet. The cabinet (800×600×2260) has two doors, including a tempered glass single-leaf door on its front and a cold-rolled steel sheet double-leaf door on its back.
ZPW-C combined DC power supply
It is composed of two cabinets, i.e. a charging and feed cabinet and a battery cabinet and applies to DC power supply systems of 100Ah/220V or 200Ah/110V or below. It has two 380VAC or 220VAC inputs supporting automatic switching and a DC output made up of five control buses with 2P/20A air switch and four closing buses with 2P/32A air switch. It essentially consists of a LCD or touch-screen microcomputer monitoring unit, a charging module, a bus insulation flashing device (or a branch insulation detection unit), a voltage reduction silicone assembly and an optional battery inspection unit, a switching unit and two cabinets. Each of the cabinets (800×600×2260) has two
doors, including a tempered glass single-leaf door on its front and a cold-rolled steel sheet double-leaf door on its back.
SZPW-L large-capacity DC power supply
It is composed of a charging cabinet, feed cabinet and a battery cabinet and applies to DC power supply systems of 100Ah/220V or 200Ah/110V or above. It has two 380VAC or 220VAC inputs supporting automatic switching and a DC output made up of at least five control buses with 2P/25A air switch and at least four closing buses with 2P/40A air switch or several other feeder lines. It essentially consists of a LCD or touch-screen microcomputer monitoring unit, a charging module, a bus insulation flashing device (or a branch insulation detection unit), a voltage reduction silicone assembly and an optional battery inspection unit, a switching unit and three cabinets. Each of the cabinets (800×600×2260) has two doors, including a tempered glass single-leaf door on its front and a cold-rolled steel sheet double-leaf door on its back.
SZPW-F wall-mounted DC power supply
It is specially designed for small-capacity systems and applies to DC power supply systems of 38Ah/220V or 65Ah/110V or below. It has two 220V inputs or one 220V, PT100V AC input and a DC output made up of two 2P/16A control buses and two 2P/32A closing buses. It essentially consists of a special LCD microcomputer monitoring unit, a charging module, an automatic voltage reduction unit and a cabinet. With an LCD, dialog menus and buttons, the microcomputer monitoring unit can realize setup, display and calibration for operating parameters, battery management, monitoring for battery voltage, control bus voltage, closing bus voltage, battery’s charging current and discharging current and charging module status. The cabinet can be a floor type or a wall-mounted type.