Question about Zenith ZTG Nema-3R, 400 Amps Three Phase, Automatic Transfer Switch (ZN3NEMA3R400) UPS System

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Zenith ZTX transfer switch, three phase 150 amp

Switch will not tranfer automatically. Generator indicator L E D's on panel are flashing red. Is the switch telling me something with the L E D s flashing?
Thanks
Bert

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  • Jerupaja Apr 13, 2009

    unit in auto,didn't start during power outage

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I suggest to call GE's 24x7 tech support team @ 1-800-637-1738, option # 3
www.gedigitalenergy.com/pq

Posted on Nov 08, 2009

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If the s2 and load are flashing every couple of seconds that means your exerciser is set.

Posted on Jan 22, 2009

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2 Answers

NO VOLTAGE ON YELLOW PHASE


what caused the UPS to transfer to Bypass? could be inverter fault, would you please check your battery set, maybe the input power is outside the tolerance and causing UPS to discharge the battery set , as well when battery set reaches the end of discharge it is causing the UPS to transfer to bypass and there is something missing on the input yellow Phase.
if the above is not true check the load type that is connected to the UPS output that is causing UPS to switch off in 10 minutes time.

Apr 17, 2014 | MGE UPS Galaxy 3000 UPS System

2 Answers

Error light in my apc smart ups sc 1500va ups


1. Four beeps every 30seconds (On Battery LED will be illuminated)
This alarm indicates that the Battery PowerSupplied outlets are now supplying battery power as opposed to power from theutility. If the UPS determines that the input utility power is unsafe for yourcomputer equipment, the UPS will switch to battery power.
Note: Ifthe power disturbance is brief, you may only hear one or two beeps.

2. Continuous Beeping (On Battery LED will beilluminated)
This alarm indicates that a Low Batterycondition has been reached and that the UPS will soon shutdown. Once the UPStransfers to On Battery operation, it can only stay on battery for a limitedamount of time. The UPS will sound this alarm about two minutes before thebatteries are totally exhausted. Once exhausted, the UPS will shutdown and turnoff its output power to your equipment. If you hear this tone you shouldimmediately shutdown your computer to prevent data loss or corruption.

3. Continuous Beeps for 30 seconds (BackUPS OFFICE 250 and 280 ONLY)
This alarm indicates the unit has detected anOverload condition after it has performed a self-test during start-up.

4. Continuous Two-Tone Beep
This alarm indicates a severe Overload wasdetected while the unit was on-battery operation. This tone will continue tosound until the unit shuts down.

5. Continuous Tone (On Battery LED will beflashing)
This alarm indicates that the battery-poweredoutlets are overloaded.

6. Continuous Tone (On Line and On BatteryLEDs flashing) Back UPS OFFICE 350,400, and 500 ONLY
This alarm indicates that an internal UPS faulthas occurred.

Dec 08, 2011 | APC Smart-UPS SC 1500VA UPS System

2 Answers

@MY APC UPS SURT15KRMXLI is not charging after installation on single phase input


we have installed a new ups but the battery light indicates red light even though its on charge

Aug 12, 2011 | APC SMARTUPS RT 15KVA RM 230V...

1 Answer

Powered from a generator the APC 3000 UPS running on AC power and running on battery lights come on alternately


It is possible that the auto power detect section has gone faulty and is switching in this shunting manner because of an error in the line detect section. The op amp is detecting a low voltage to switch on and doing so it goes back to power. This can be due to a frequency problem in the AC generator and so If you switch off the generator the fault must stop.
If so have the generator checked for frequency change or the UPS has a circuit error. Try to set the AC voltage of the generator up to the required level if there is a drop on load.

Sep 28, 2010 | NEC APC Smart-UPS 3000 RM 3U...

1 Answer

How do you calculate low phase voltage of a three phase four wire system without useing voltmeter?


u can take three incadescent bulbs of same rating, connect them in 3 phase star connection, means 3 phase 4 wire connection..connect it across supply..the bulb connected across low voltage phase will glow dimmer than other two

Jun 19, 2010 | Zenith ZTG Nema-3R, 400 Amps Three Phase,...

1 Answer

How to solve single phase lost in UPS at input end


What size UPS and make and model?

First make sure your utility is reaching the UPS and it's not on that end, sounds like the problem might be with your input power not the UPS.

If power is getting to the unit, you may have a failed power component internally, such as a fuse or transistor.

Nov 05, 2009 | Zenith ZTG Nema-3R, 400 Amps Three Phase,...

1 Answer

Attaching a generator to Powerware 9120 UPS


Power ware has a powerpass bypass switch for $200.00.

There is two inputs on this bypass switch. One for power, and one for the generator.

One ouput for your UPS. There you have it... There is your soluiton. I might add one other thing called a Power Guard, PMM117, to monitor the power of the backup generator. The time delay of this device will prevent over current from cooking your UPS power supply.

They also have a Hardwired version that is more expensive for you 5, 6 ,10KVA UPS. So a automatic bypass switch is what you need.

Jul 15, 2009 | Powerware Invensys 9120 Model 1000i...

1 Answer

Dead appearing ups/inverter


keep on your main switch. off all the lights fan and other electrical items, let that inverter get charge first

Jun 18, 2009 | APC Back-UPS CS 500VA UPS System

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