中文版
Description
ALSTOM DEP232 feeder protection relay
Overview
ALSTOM DEP232 (its full order number is usually DEP232 029.223003) is a high-performance, multi-functional digital feeder protection relay in the classic VAMP series of ALSTOM (ALSTOM, whose grid business has now been merged into Hitachi Energy). This device is specifically designed to provide comprehensive, reliable protection, monitoring and control for lines and cable feeders in medium-voltage distribution networks (typically referring to voltage levels ranging from 6kV to 36kV).
DEP232 is a core intelligent electronic device (IED) in the secondary circuit of power systems. It continuously monitors electrical quantities such as current and voltage. Once a fault (such as short circuit, overload, or ground fault) is detected, it can instantly issue an instruction to trip the circuit breaker and isolate the faulty part, thereby protecting expensive power equipment (such as cables, transformers, and busbars) from damage. And ensure the stability and safety of the entire power grid.
Core features and advantages
1. Comprehensive protection function package
Overcurrent protection: It provides instantaneous, time-limited, and inverse-time (following the characteristic curves of standards such as IEC 60255-151) overcurrent protection, which is the main protection against interphase short-circuit faults.
Grounding fault protection: By measuring residual current or zero-sequence current, it sensitively detects and cuts off grounding faults in the system, providing personal safety and equipment safety.
◦ Automatic reclosing (optional) : Multiple reclosing logic can be configured. For transient faults (such as lightning strikes or wind-blown foreign objects), automatic reclosing can quickly restore power supply after the fault disappears, greatly enhancing the reliability of power supply.
Other auxiliary protections: They usually also include negative sequence protection (detecting unbalanced loads), thermal overload protection, under-voltage/over-voltage protection, etc.
2. Powerful measurement and monitoring capabilities:
High-precision measurement of all basic electrical parameters, including phase current, zero-sequence current, phase voltage, line voltage, frequency, power (kW, kvar), power factor, energy, etc.
It is equipped with an internal fault recording function, which can record the current and voltage waveforms at the moment before and after a fault occurs, providing crucial data for accident analysis.
Record the sequence of events (SOE) with precise timestamps to help operation and maintenance personnel quickly locate the source of faults and analyze the logic of actions.
DEP232 029.223003
3. Flexible communication and integration
It is equipped with multiple industrial standard communication protocols as standard, such as IEC 60870-5-103 (a standard for the power industry) and Modbus (via serial port or Ethernet port), enabling it to be easily integrated into existing substation automation systems (SAS) or SCADA systems.
It provides rich digital input and output (I/O) for receiving remote commands, status signals, and controlling devices such as circuit breakers and indicator lights.
4. Humanized operation and configuration
The front panel is equipped with a clear LCD display and navigation buttons, facilitating on-site viewing of real-time data, alarm information and basic operations.
By using dedicated configuration software (such as VAMPSET) and connecting through optical fibers or electrical ports, graphical and in-depth protection function configuration, logical programming and data analysis can be carried out, greatly simplifying debugging and maintenance work.
5. Robust and reliable design
Adhering to industrial-grade design standards, it can withstand harsh electromagnetic environments (EMC) and temperature changes, ensuring long-term stable operation in substation environments.
Typical application fields
DEP232 is widely used in various occasions that require medium-voltage distribution protection
• Industry and Manufacturing: Incoming and outgoing line protection for factory main distribution rooms, large motors, and workshop transformers.
• Infrastructure: Medium-voltage power distribution systems for hospitals, data centers, airports, and commercial complexes.
• Public utilities: Protection of 10kV/35kV switchgear stations, ring main units and pole-mounted switches in urban power grids.
• Renewable energy: Protection of collection lines for wind farms and photovoltaic power stations, as well as plant transformers.
• Power distribution protection for high-demand industries such as mining and shipping.
Summary of Technical Specifications
• Manufacturer: ALSTOM (VAMP series, now part of the Hitachi Energy product line)
Model: DEP232
Order No. : 029.223003 (may contain specific hardware/software configuration information)
• Type: Digital feeder protection relay
• Protection functions: three-phase overcurrent, ground fault, automatic reclosing, thermal overload, etc
• Measurements: Ia, Ib, Ic, I0, Uab, Ubc, Uca, U0, P, Q, PF, Freq, Energy
• Communication protocol: IEC 60870-5-103, Modbus RTU (Optional support may include Profibus, DNP3, etc.)
• Input/Output: Multiple programmable digital input and output relays
• Power supply: Usually supports multiple DC or AC auxiliary power supplies (such as 24-48 VDC, 110-240 VAC/DC)
Conclusion
ALSTOM DEP232 is a medium-voltage feeder protection relay that has been well-tested in the market, featuring comprehensive functions and stable performance. It integrates protection, control, measurement and monitoring, and is a classic choice for building a safe, reliable and intelligent medium-voltage distribution network. Its powerful functions and flexibility enable it to meet the complex application requirements ranging from traditional industries to modern infrastructure. Choosing DEP232 means selecting a reliable and intelligent “guardian” for your power system.
Please contact Sunny sales@xiongbagk.cn for the best price.
➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
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