工程案例 | 瑞泰

项目概述

瑞泰承制的7500kVA负载箱应用于广东阳江核电站现场测试项目，圆满通过10小时不间断满功率带载试验。

负载箱技术规格

设备型号：	RATA 8250kVA Resistive & Reactive Load Bank
主要电气参数
系统组成	Load enclosure, high‑voltage switchgear, dry‑type transformer, resistive load, inductive load, acquisition system, control system, cooling system and protection system
有功功率	6000kW
无功功率	4500kVAR
视在功率	7500kVA
额定负载电压	AC380V (stepped‑down to 380V via transformer)
额定频率	50Hz
负载特性	Integrated resistive‑inductive load; resistors and reactors can be switched on and off independently
功率因数	PF=0.8～1.0 adjustable
负载连接	Three‑phase four‑wires Three‑phase Balance Unbalance degree ≤ ±2%
加载精度	≤ ±2%
加载步进值	10kW / 7.5kVAR
冷却方式	Forced air cooling with fan‑centric modular design
风机电源	Dual‑power supply (internal / external) with automatic fast transfer
进出风方式	Side air intake, top air outlet
负载温升	Temperature rise ≤120℃ at 1‑meter position from air outlet
运行方式	Continuous‑duty operation
负载控制电源	AC380V/50Hz
测量显示精度	±0.5%FS
绝缘等级	Class F
电阻材料	Special‑alloy resistors Load Control‑Control Mode Local / Remote System Parameters‑Control Mode Manual / Automatic
加载功能	Independent loading & combined loading (supports parallel‑operation with on‑site AC6.6kV‑4200kW‑RL and AC6.6kV‑3000kVA‑RL/AC mobile test loads)
测量控制功能	A, V, Hz, kW, cosΦ acquisition and display
控制响应时间	≤200ms
负载保护	Short‑circuit, over‑temperature, abnormal airflow, emergency stop and other protections
运行环境温度	‑20℃ ~ +50℃
运行环境湿度	50% ~ 95%
运行海拔	2000 m and below
相对湿度	≤95%, non‑condensing Atmospheric Pressure 86‑106 kPa
箱体尺寸	13000 mm × 2438 mm × 2896 mm (L × W × H)
重量	Approx. 20 tons per unit
防护等级	IP54
应用场所	Outdoor (salt‑spray, dust, rain‑snow resistant)
安装与运输	Load‑bearing lifting lugs fitted at four corners of enclosure to satisfy hoisting requirements
负载扩展	Parallel expansion of 1+N load containers
箱体颜色	Subject to customer requirements
应用范围	Suitable for gas‑turbine generator sets, marine diesel generator sets, land‑based diesel generator sets and UPS systems
应用场景	After the completion of manufacturing of the load equipment, the following tests shall be carried out: rated power and load‑capacity test, load‑regulation accuracy test, electrical‑parameter fluctuation test under various working conditions, temperature‑rise test, overload and protection‑function test, insulation test, power‑frequency withstand‑voltage test, enclosure protection‑rating test, earthing test, and continuous full‑load capability test (full‑load operation for no less than 24 hours).