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Eaton Electrical Powerware 9395 4.3 UPS system one line configurations, Voltage, UPS model, System type

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During a utility power failure, the rectifier no longer has an AC utility source from which to supply the DC output current required to support the inverter.The input contactor K1 opens and the battery instantaneously supplies energy to the battery converter.The converter either bucks or boosts the voltage so that the inverter can support the customer’s load without interruption. If bypass is common with the rectifier input, the backfeed protection contactor K5 also opens. The opening of contactors K1 and K5 prevent system voltages from bleeding backwards through the static switch and rectifier snubber components and re-entering the input source.

If the input power fails to return or is not within the acceptance windows required for normal operation, the battery continues discharging until a DC voltage level is reached where the inverter output can no longer support the connected loads. When this event occurs, the UPS issues another set of audible and visual alarms indicating SHUTDOWN IMMINENT. Unless the rectifier has a valid AC input soon, the output can be supported for only two minutes before the output of the system shuts down. If the bypass source is available, the UPS transfers to bypass instead of shutting down.

If at any time during the battery discharge the input power becomes available again, contactors K1 and K5 close and the rectifier begins to supply DC current to the converter and inverter. At this point, the unit returns to normal mode. Depending on the total load and the duration of the battery discharge, battery current limit alarms may be seen for a short time due to the current required to recharge the battery.

4.3 UPS system one line configurations

One line drawing	UPS model		Voltage		System type
One line drawing	UPS model	Input		Output	System type
		Input		Output
Figure 4-5	9395-450/550	400		400	Single module – Reverse transfer
Figure 4-5	9395-450/550	400		400	dual-feed
					dual-feed
					Single module – reverse transfer
Figure 4-6	9395-450/550	400		400	dual-feed with typical maintenance
					bypass panel

1027574

UPS 450 - 550 kVA (2x225 - 2x275 kVA)

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Revision B	User’s and Installation Guide

Contents

Powerware 9395 UPS 450–550kVA (2x225 - 2x275 kVA) User’s and Installation Guide IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS Powerware 9395 UPS 450–550kVA (2x225 - 2x275 kVA) User’s and Installation Guide Page 1 Introduction 1.1 UPS standard features Figure 1-1.Powerware 9395-550(2*275) cabinet 1.2 Options and accessories 1.3 Basic system configurations 1.4 Using this manual 1.5 Conventions used in this manual 1.6 Symbols, controls, and indicators 1.7 For more information 1.8 Getting help 2 UPS installation plan and unpacking 2.1 Creating an installation plan 2.2 Preparing the site Model Weight kg Table 2-1.UPS cabinet weights From top of cabinet From front of cabinet Figure 2-1.UPS cabinet dimensions (front view) Figure 2-2.UPS cabinet dimensions (right side view) Figure 2-3.UPS cabinet dimensions (top view) Figure 2-4.UPS cabinet dimensions (bottom view) 2.2.2 UPS system power wiring preparation Rating Units Rating 50/60 Hz Input and output voltage AC input to UPS rectifier Terminal function Terminal Function Bus landing Bolt size Load rating Table 2-8.Recommended bypass and output circuit breaker ratings 2.2.3 UPS system interface wiring preparation Page 2.3 Inspecting and unpacking the UPS cabinet Figure 2-8.Powerware 9395 UPS (2*275 kVA) cabinet as shipped on pallet 3 UPS system installation 3.1 Preliminary installation information 3.2Unloading the UPS cabinet from the pallet and mechan- ical installation •Do not tilt cabinets more than 10° from vertical •Lift the cabinet only with a forklift or damage may occur Figure 3-1.Removing left side shipping bracket 3.3 Battery cabinet installation 3.4 Installing UPS external and battery power wiring Figure 3-3.Conduit and wire entry locations Figure 3-4a UPS power terminal locations Figure 3-4.b UPS power terminal locations Figure 3-5a, front view Figure 3-5b, side view. UPS power terminal locations MBS version 3.5 Installing interface connections Figure 3-6.Typical alarm relay connection Figure 3-7.Interface terminal locations Terminal TB1 Name Descrition Terminal TB2 Terminal TB3 Figure 3-8.Interface terminal detail AA Figure 3-9.Terminal blocks TB1, TB2, and TB3 connector assignments 3.5.2 TB1 battery interface connections Figure 3-10.Typical battery interface connection 3.5.3 X-Slotconnections 3.6 Installing a remote EPO switch Figure 3-12.Remote EPO switch From remote EPO switch To customer interface Remarks Terminal board TB1 in UPS cabinet Figure 3-13. Normally-Openremote EPO switch wiring Figure 3-14.Normally closed remote EPO switch wiring 3.7 Initial startup 3.8 Completing the installation checklist Installation checklist 4 Understanding UPS operation 4.1 Looking inside the UPS system 4.2 Modes 4.2.2 Bypass mode The critical load is not protected while the UPS is in Bypass mode Figure 4-3.Path of current through the UPS in bypass mode 4.2.3 Battery mode Figure 4-4.Path of current through the UPS in battery mode 4.3 UPS system one line configurations Page Figure 4-6.Typical maintenance bypass panel 5 UPS operating instructions 5.1 UPS controls and indicators 5.2 Using the control panel 5.2.2 Using the LCD and pushbuttons Figure 5-3.Parts of the LCD 5.2.3 Using the menu Menu option Table 5-2.Display function menu map 5.2.4 Mimic screen Figure 5-4.Main menu and Mimic screen (normal mode) Page Page Page Page Table 5-3.Display menu operation 5.2.6 System controls screen Figure 5-5.System Controls screen 5.3 Operation 5.3.2 Starting the UPS in bypass mode 5.3.3 Starting the power module 5.3.4 Transfer from normal to bypass mode Power is present inside the UPS cabinets 5.3.5 Transfer from bypass to normal mode 5.3.6 Transfer from normal to bypass mode and shut down UPS 5.3.7 UPS and critical load shutdown 5.3.8 Charger control 5.3.9 Using the UPS LOAD OFF pushbutton 5.3.10 Using the Remote Emergency Power-offswitch Turn UPS from normal mode to mechanical bypass Turn UPS from mechanical bypass to normal mode 6 Responding to system events 6.1 General 6.2 System event horns 6.3 System event indicators 6.4 System event messages 7 Communication 7.1 X-Slotcards 7.2 Powerware LanSafe Power Management Software 7.3 Terminal mode MM DD YYYY HH:MM:SS.hh KYWD MESSAGE <CR> <LF Figure 7-3.Sample Event History Log 7.4 Building alarm monitoring 7.5 General purpose relay contact 8 UPS maintenance 8.1 Important safety instructions 8.2 Performing preventive maintenance 8.3 Installing batteries 9 Recycling the used UPS or batteries 10 Product specifications 10.1 Model numbers 10.2 Single module specifications 11 Warranty