Instruction/ maintenance manual of the product LX-450 Hubbell
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April, 2001 Hubbell Industrial Controls, Inc. A subsidiary of Hubbell Incorporated 4301 Cheyenne Drive Archdale, NC Telephone (336) 434-2800 FAX (336) 434-2803 Instruction Manual Transfer switches LX-440 Non-Automatic LX-450 Automatic 100, 200, 260, 400, 600, 800, 1000, 1250 Ampere 2, 3, 4 Pole Publication No.
Transfer Switch Page 2 of 16 Pages Table of Contents 1.0 Introduction ....................................................................................................................................3 2.0 Specifications and Certifications .........
Transfer Switch Page 3 of 16 Pages 1.0 Introduction Hubbell’s non-automatic, LX-440, and automatic, LX-450, transfer switches are available in 2, 3, and 4 pole models with ampere ratings of 100 to 1250 A. The transfer switches are available as open type or in an individual cabinet.
Transfer Switch Page 4 of 16 Pages 2.0 Specifications and Certifications Specifications Switch Mechanism Solenoid Actuation Short Circuit Ratings of Transfer Switches 100 A 200 A 260, 400, 600 A 800, 1000, 1250 A RMS Symmetrical Am peres 42,000 50,000 When protected by 65,000 a circuit breaker.
Transfer Switch Page 5 of 16 Pages Receiving and Storage After receiving the transfer switch inspect the cabin et for any damage that m ay have occurred during shipping. If the transfer switch is not installed immediately, cover the cabinet and store in a dry area.
Transfer Switch Page 6 of 16 Pages The Hubbell Transfer Control Module, LX-301, controls transfer to the emergency source and retransfer to the normal source. The LX-440 non-automatic tran sfer switch does not come with a Control Module. A selector switch initiates transfer and retransfer.
Transfer Switch Page 7 of 16 Pages 5.0 Standard and Optional Features Standard Features The following standard features are provided with the LX-450 automatic transfer switch.
Transfer Switch Page 8 of 16 Pages Auxiliary Contacts Auxiliary contacts TSNa3, -a4 and TSEa3, -a4 are ava ilable for remote alarm s, pilot lights, or other applications. These contacts are pre-wired for cust omer connections to PTB1-7 through PTB1-12.
Transfer Switch Page 9 of 16 Pages Plant Exerciser (B1–B2) The Plant Exerciser option is a seven-day clock th at provides for automatic test operation of the generator set at pre-selected intervals. The clock is powered by a fused circuit from control transformer XFMR3.
Transfer Switch Page 10 of 16 Pages 6.0 Maintenance D ANGER: Do not touch the transfer switch until ALL pow er is disconnected. Shocks, burns, or death may result from high voltage.
Transfer Switch Page 11 of 16 Pages Auto Test The following procedure is an example for testing th e autom atic transfer switch. A procedure should be written by qualified personnel that is applicable to th e facility, the transfer switch options, and the power distribution system.
Transfer Switch Page 12 of 16 Pages Time Delay function Typical factory setting Adjustment Range NORMAL OVER-RIDE ON MONETARY OUTAGE 1 second, engine generator 3 seconds, utility 0.5 to 6 seconds RETRANSFER TO NORMAL 30 minutes 2 to 30 minutes ENGINE RUNNING UNLOADED 5 minutes 2 to 30 minutes EMERGENCY OVER-RIDE ON MOMENTARY OUTAGE 1 second 0.
Transfer Switch Page 13 of 16 Pages Components 1. Transfer Control Relay Controls whether the automatic transfer switch is in the normal or the em ergency position. De-energized - automatic transfer switch in Norm al position Energized - automatic transfer switch in Em ergency position 2.
Transfer Switch Page 14 of 16 Pages 8.0 Plant Exerciser T imer Set the time 1) Press the Res. (reset) button to clear the memory 2) Press and hold the (time/run mode) button while setting the tim .
Transfer Switch Page 15 of 16 Pages b) Press Prog. a second time to see the retransfer time. c) Press Prog. a third time to see the number of additional program times Fr18 3) To manually override the .
Transfer Switch Page 16 of 16 Pages 9.0 Spare Parts and Drawing References The following lists contain part numbers and drawi ng numbers for identification and for ordering. If materials are needed from Hubbell, contact the lo cal Hubbell representative to request the desired information or parts.
An important point after buying a device Hubbell LX-450 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Hubbell LX-450 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Hubbell LX-450 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hubbell LX-450 you will learn all the available features of the product, as well as information on its operation. The information that you get Hubbell LX-450 will certainly help you make a decision on the purchase.
If you already are a holder of Hubbell LX-450, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Hubbell LX-450.
However, one of the most important roles played by the user manual is to help in solving problems with Hubbell LX-450. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hubbell LX-450 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
