Owner's manual please read this manual before operating your transfer switch transfer switch 30 amps model: sts-30 110-17 fawcett rd coquitlam, b.C. Canada v3k 6v2 t: 604 525 3836 f: 604 525 5221 e-mail: samlex@samlexamerica.Com website: www.Samlexamerica.Com 208-2010_sts-30_transfer_switch_manual.
2 index 1. Introduction ............................. ..................................................................... 3 2. General information .............................. ...................................................... 5 3. Installation ...................................... ...........
3 1 introduction function of a transfer switch in case of failure of the main ac power source like the electric utility power, it is desirable to switch the critical ac loads to a standby / back up ac power source like a generator or an inverter. The switching action should ensure that only one ac p...
4 1 introduction thus, there may be 3 types of ac power sources. Transfer switches are used to confi gure switching of the ac power sources so that the priority of the ac sources is: - electric utility power - genset (generator) - inverter sizing of transfer switch determining which circuits you wil...
55 2 general information fig. 2. Internal layout of contacts of the transfer relay and the pcb for relay control - 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...
6 3 installation features - can be confi gured for generator / power cord connection or inverter / alternate source connection - multiple ¾” and 1” knockouts (7, fig. 1) have been provided on all the sides for ease of routing the input and output cables - consists of heavy duty 110 vdc, double pole ...
7 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, allowing switchi...
8 3 installation installation confi gurations preset confi guration - 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 pow...
9 3 installation a. Feed the 3 core cable from the electric utility / shore power cord / the generator through the ¾” cable clamp that has been provided (4, fig1). Connect the three cores as follows (fig 4): - the black core to the black piece of wire connected to the no, line “l1” contact terminal ...
10 3 installation testing of the operation (fig 4) read and follow all safety instructions before testing the operation a. Plug in the power cord. 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 ...
11 3 installation a. Connect the shore power cord leads to the normally closed (nc) contacts t-5 and t-6 of the transfer relay. The pre-wired 15 a cord (1, fig1) and nema5-15 plug (2, fig 1) can be used for 15 a service (if it is required to be connected to a 30 a service, this cord should be replac...
12 troubleshooting 4 low voltage low voltage is harmful to most appliances. Relay based transfer switches are also affected 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...
13 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 is available and the led does not light after 20 to 25 seconds, the time delay...
14 5 specifications model sts-30 input / output voltage 120 vac, 60 hz input / output current 30 a* battery charger receptacle dual nema5-15r 5 a max 12 a continuous fused at 15 a knockouts for 1” and ¾” maximum operating time of the relay 25 msec delay time for generator warm up 20 sec + / - 5 sec ...
15 6 warranty 2 year limited warranty the 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. This warranty is in effect for 2 years from the date of purchase by the user (the “p...
Owner's manual please read this manual before operating your transfer switch transfer switch 30 amps model: sts-30 110-17 fawcett rd coquitlam, b.C. Canada v3k 6v2 t: 604 525 3836 f: 604 525 5221 e-mail: samlex@samlexamerica.Com website: www.Samlexamerica.Com 208-2010_sts-30_transfer_switch_manual.
