SAT现场验收测试
一、SAT基础概念 | SAT Fundamentals
二、SAT与FAT的区别 | SAT vs. FAT
三、SAT测试内容 | SAT Test Scope
四、SAT签字与移交 | SAT Sign-Off & Handover
五、SAT常见问题 | Common SAT Issues
Characters: Commissioning Engineer (调试工程师 CE) / Vendor Service Engineer (厂家服务 VE) · Characters: Commissioning Lead (调试主管 CL) / Mechanical Supervisor (机械主管 MS)
The switchgear has been installed and cabled. Power is available from the temporary supply. Are we ready for SAT on Section A?
开关柜已安装接线完毕。临时电源已就绪。A段SAT可以开始了吗？
Let me do a pre-energization check first — busbar connections torque, grounding continuity, and insulation resistance phase-to-phase and phase-to-ground. This wasn't part of the original SAT plan, but after shipping, it's a good practice.
先做送电前检查——母线连接扭矩、接地连续性、相间和对地绝缘电阻。这不在 原SAT计划里，但长途运输后最好测一下。
I agree. The FAT values are in the factory report — we should compare. If insulation resistance has dropped significantly, it could indicate moisture ingress during transit.
同意。FAT值在工厂报告里——应该对比。如果绝缘降得多，可能运输中受潮了。
Readings look good — all within 5% of FAT values. Ground continuity is solid. Let's energize. Close the incoming breaker and we'll check the bus voltage, phase sequence, and the metering panel readings.
读数可以——都在FAT值的5%以内。接地连续性正常。送电吧。合上进线断路器， 检查母线电压、相序和表计面板读数。
Voltages are balanced, phase sequence confirmed — A-B-C clockwise. Now let's run through the breaker operations: open-close-open from local and remote, trip test, and interlock verification. I'll read out each step from the SAT procedure.
电压平衡，相序确认——A-B-C正序。现在做过断路器操作：本地和远程分-合-分、 跳闸测试、联锁验证。我按SAT程序一步步来。
All breaker operations successful. The electrical interlock between the incoming and bus-tie breakers works correctly — only one can be closed at a time. SAT for Section A is complete. I'll draft the report for your signature.
所有断路器操作成功。进线和母联之间的电气联锁正常——只能合一个。A段SAT完成。 我起草报告给你签。
We ran the SAT on the boiler feed water pump train. The pump started smoothly and vibration is within spec, but the flow rate is 12% below the performance curve at the design point.
锅炉给水泵组SAT跑完了。启动平稳，振动在范围内，但设计工况点流量比性能曲线 低12%。
That's concerning. We passed the solo run, but the integrated test with the actual piping system is showing the gap. Let's check the suction pressure and the discharge valve position first.
这要重视。单机试车过了，但带实际管道系统的联动测试就暴露了。先查入口压力 和出口阀开度。
Suction pressure is 0.8 bar — slightly below the NPSH requirement of 1.0 bar. That could explain the performance drop. The discharge valve is fully open. It may be the suction piping configuration — there's an unplanned elbow upstream of the pump inlet.
入口0.8巴——略低于NPSH要求的1.0巴。这可能是原因。出口阀全开。可能是入口 管道布置问题——泵入口上游多了一个计划外的弯头。
That elbow is creating turbulence and reducing effective suction head. We need to either modify the piping or increase the upstream pressure. Let me check if we can raise the deaerator level to gain more static head. If not, we'll need an engineering change.
那弯头产生湍流降低了有效吸入压头。要么改管道，要么提高上游压力。我查一下 能不能提高除氧器液位增加静压头。不行的话就得走工程变更。
I'll flag the SAT as conditionally passed pending resolution of the flow shortfall. We can't sign off on the final acceptance until the pump meets the design flow at the specified discharge pressure.
我把SAT标为有条件通过，等流量不足解决后再正式验收。泵在设计出口压力下达不 到设计流量之前，我不能签最终验收。
Understood. I'll get the piping designer on site tomorrow morning. In the meantime, let's document all the test data — flow, pressure, vibration, temperature — and attach it to the SAT report.
明白。明天一早就叫管道设计来现场。同时把测试数据全记录好——流量、压力、 振动、温度——附到SAT报告里。