Related Manuals for Samlexpower STS-30
Summary of Contents for Samlexpower STS-30
- Page 1 Transfer owner's Please read this manual before Manual Switch operating your 30 Amps transfer switch STS-30...
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Page 2: Table Of Contents
Owner'S MAnuAl | Index Section 1 Introduction ................3 Section 2 General information ............. 5 Section 3 Installation ................6 Section 4 Troubleshooting ..............12 Section 5 Specifications ..............14 Section 6 Warranty ................. 15 2 | SAMLEX AMERICA INC. -
Page 3: Introduction
SecTIOn 1 | Introduction Function oF a tranSFer Switch In case of failure of the main AC power source like the electric utility power, it is desir- able to switch the critical AC loads to a standby / back up AC power source like a genera- tor or an inverter. - Page 4 Larger wattage units can be selected for simultaneous starting and operation of multi- ple appliances. tranSFer Switch StS-30 Transfer Switch STS is designed for single phase operating voltage of 120 VAC, 60 Hz and can handle input/ output current of up to 30 A or an Apparent Power of 3600 VA (Apparent Power = Volts X Amps.
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Page 5: General Information
SecTIOn 2 | General Information LeD1 PCb1 r1: Transfer relay coil T1: Line "L", Common T2: Neutral "N", Common T3: Line "L1", No (Normally open contact of transfer relay) T4: Neutral "N1", No (Normally open contact of transfer relay) T5: Line "L2", NC (Normally closed contact of transfer relay) T6: Neutral "N2", NC (Normally closed contact of transfer relay) T7: (-) input for relay coil T8: (+) input for relay coil... -
Page 6: Installation
SecTIOn 3 | Installation - Internal DIP Switch ( SW1, fig 2) for enabling or disabling delayed transfer to generator - Internal LeD (LeD1, fig 2) for indicating energized condition of the transfer relay coil (r1, fig 2) and for diagnostics operation oF the tranSFer relay (pleaSe See Fig 2) relay r1 is a Double Pole Double Throw (DPDT) relay and is used to switch power from one source to the other. -
Page 7: Mounting Location
SecTIOn 3 | Installation mounting location The unit can be installed near the power cord entry of the rV or near the location of the generator output on the line side of the main distribution panel, or it can be installed on the load side of the panel between the main panel and a sub panel, al- lowing switching for either the entire electrical load or only designated circuits. -
Page 8: Installation Configurations
SecTIOn 3 | Installation inStallation conFigurationS general This Transfer Switch has been especially pre-wired for ease of connections for setting up a backup power / UPS (Un-interruptible Power Supply) system comprising of an Inverter, a battery charger and batteries. A backup power system / UPS can be used in on-grid, off-grid and rV applications. - Page 9 SecTIOn 3 | Installation a. Disable the Time Delay Circuit by changing the position of DIP Switch SW1 (fig 2) from off to oN position (Switch is factory preset in off condition). b. Use AWG#10/3 (30A) cable to connect AC input power from Utility/Shore Power Cord (rV).
- Page 10 SecTIOn 3 | Installation teSting oF the operation (Fig 4) read and Follow all Safety instructions beFore testing the operation a. Switch oN the AC input power from Utility/Shore Power Cord (rV). As the time delay has been disabled (As explained above, if the primary source is electric utility / shore power cord, the time delay should be disabled by changing the position of the DIP Switch SW1 to oN position), the relay coil will energize as soon as AC input is switched oN.
- Page 11 SecTIOn 3 | Installation b. Start the generator. There is a pre-programmed 20 to 25 second delay in the transfer switch. The delay is designed to allow the generator a brief warm-up period. When the delay completes its cycle the switch should engage and the AC loads should oper- ate normally.
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Page 12: Troubleshooting
SecTIOn 4 | Troubleshooting low Voltage Low voltage is harmful to most appliances. relay based transfer switches are also af- fected by low voltage; if the voltage level drops lower than the holding voltage of the coil, the relay contacts will “chatter”. Sustained contact chattering may cause damage. general low Voltage Low voltage can be caused by low voltage conditions such as in an rV park with inadequate wiring for crowded camper conditions where everyone’s electricity suffers... - Page 13 SecTIOn 4 | Troubleshooting Failed time delay circuit It is possible for a voltage spike, etc. to cause the Time Delay Module to fail: if this happens, the switch will no longer transfer. If the AC input to the control board PCb1 (fig 2) is available and the LeD (fig 2) does not light after 20 to 25 seconds, the time delay function in the module has failed, and the module will be required to be replaced.
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Page 14: Specifications
SecTIOn 5 | Specifications model StS-30 INPUT / oUTPUT VoLTAGe 120 VAC, 60 Hz INPUT / oUTPUT CUrreNT 30A* bATTery CHArGer reCePTACLe NeMA5-20r Duplex receptacle 20A maximum 16A continuous fused at 20A KNoCKoUTS for 1” and ¾” MAXIMUM oPerATING TIMe of THe reLAy... -
Page 15: Warranty
2 year limited warranty STS-30 Transfer Switch manufactured by Samlex America, Inc. (the “Warrantor“) is warranted to be free from defects in workmanship and materials under normal use and service. The warranty period is 2 years for the United States and Canada, and is in effect from the date of purchase by the user (the “Purchaser“). - Page 16 Information Toll Free Numbers Ph: 800 561 5885 Fax: 888 814 5210 Local Numbers Ph: 604 525 3836 Fax: 604 525 5221 Website www.samlexamerica.com USA Shipping Warehouse Kent WA Canadian Shipping Warehouse Delta BC Email purchase orders to orders@samlexamerica.com 11001-STS-30-0114...
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