寻源公告--地铁供电系统项目中压开关柜

产品类别

主要技术参数

预计采购数量

通用要求

标准体系： 遵守国际标准，包括但不限于IEC 62271系列（高压开关设备）、IEC 61850（电力自动化通信网络）、IEC 60529（IP防护等级）以及NFPA 130（固定轨道交通系统标准）等 。

项目规范： 必须遵循项目整体质量保证、项目集成/调试、电磁兼容性、环境设计准则、网络安全和保修等要求。

寿命与保修： 安装完成的系统享有3年保修期，并包含售后技术支持 。须提供备件以确保开关柜的可用性，并保障系统在设计寿命内的安全可靠运行。

控制与监控： 必须具备本地和远程控制与监控功能，能够与SCADA（监控与数据采集）系统无缝集成，实现状态监测、远程操作和数据交换 。

接口管理： 考虑并管理与牵引变压器、设备馈线、辅助变压器等其他系统接口，如跳闸、报警、故障和机械联锁等。

550面

电气要求

额定电压：33 kV 三相系统 50 Hz 。

额定电流：母线在40°C环境温度下的额定电流为1250 A 。母线在40°C环境温度下的额定短时耐受电流为80kA 。断路器的额定短时耐受电流为62.5 kA峰值 。

断路器：中压断路器应为固定安装式。应包含分闸和合闸电机，能分闸并加锁，包含用于监测其合闸位置的辅助触点（2 常开 + 2 常闭）。 包含用于监测其接地状态的辅助触点（2 常开 + 2 常闭）。

结构与防护参数

开关柜类型： 金属封闭式气体绝缘开关柜（GIS），采用SF6气体作为绝缘介质，并形成密封的压力系统 。

防护等级 (IP)：主电路的IP等级为IP67 。控制机构和电缆隔室的IP等级为IP3X 。机械冲击防护 (IK)： IK等级为IK08 。内部电弧防护 (IAC)

保护与监控：气体绝缘开关设备（GIS）面板应包含用于监测气体泄漏的气体，柜内电线及电缆应为低烟无卤并满足防火等级要求。

监测系统：配备电力计量单元（PMU），可存储电能质量事件 。提供本地和远程控制与监控功能 。

人机界面 (HMI)： 开关柜正面配有HMI，用于显示单线图 。

Product Category

Main Technical Parameters

Estimated Procurement Quantity

General Requirements

Standard System: Compliance with international standards, including but not limited to IEC 62271 series (High-voltage switchgear and controlgear), IEC 61850 (Communication networks and systems for power utility automation), IEC 60529 (IP Code - Degrees of protection), and NFPA 130 (Standard for Fixed Guideway Transit and Passenger Rail Systems), etc.

Project Specifications:adhere to the project's overall quality assurance, project integration/commissioning, electromagnetic compatibility, environmental design criteria, cybersecurity, and warranty requirements.

Warranty: The installed system enjoys a 3-year warranty period. including post-sales technical support. Must provide spare parts to ensure switchgear availability and guarantee the system's safe and reliable operation throughout its design life.

ontrol Monitoring: Must possess local and remote control and monitoring functions, capable of seamless integration with the SCADA (Supervisory Control and Data Acquisition) system to achieve condition monitoring, remote operation, and data exchange.

Interface Management

Consider and manage interfaces with other systems such as traction transformers, equipment feeders, and auxiliary transformers. This includes interfaces for tripping, alarms, faults, and mechanical interlocks.

550 units

Rated Parameters

Rated Voltage: 33kV, three-phase, 50Hz system.

Rated Current:

Busbar rated current: 1250A at an ambient temperature of 40°C.

Rated Short-Time Withstand Current:

Busbar rated short-time withstand current: 80 kA for 1 second at 40°C.

Circuit breaker rated short-time withstand current: 62.5 kA peak.

Circuit Breaker Requirements:

The medium-voltage circuit breaker shall be of the fixed-mounted type.

It shall include opening and closing motors, and must be capable of being opened and locked.

It shall include auxiliary contacts (2 NO + 2 NC) for monitoring its closed position.

It shall include auxiliary contacts (2 NO + 2 NC) for monitoring its grounding status.

Structure and Protection Parameters

Switchgear Type: Metal-enclosed, gas-insulated switchgear (GIS). SF6 gas shall be used as the insulating medium, forming a sealed pressure system.

Ingress Protection (IP) Rating:

Main circuit: IP67.

Control mechanism and cable compartments: IP3X.

Mechanical Impact Protection (IK) Rating: IK08.

Internal Arc Classification (IAC)

Protection and Monitoring

The Gas Insulated Switchgear (GIS) panel shall be equipped with a gas leakage monitoring device. The wires and cables inside the cabinet shall be low-smoke zero-halogen (LSZH) and meet the required fire resistance rating.

Monitoring System:

A Power Measurement Unit (PMU) shall be provided, capable of storing power quality events. Local and remote control and monitoring functions shall be available.

Human Machine Interface (HMI):

An HMI shall be installed on the front of the switchgear for displaying a single-line diagram.