B. Ground Wiring
The Sima STP-3000has a lug on the rear panel to connect the chassis of the inverter and its AC output ground to the AC distribution system ground. This chassis ground lug must be connected to a grounding point, such as the chassis ground of a vehicle, or the grounding system of a boat, or the earth ground via a ground rod (a metal rod pounded into the earth), or other proper service en- trance ground. Use a # 8 A WG or larger copper wire (preferably with Green/Yellow insulation) to connect the chassis ground lug to the grounding point. The neutral (common) conductor of the Sima STP-3000AC output circuit is also connected to chassis ground to conform to the National Electrical Code requirements. Set the ON/OFF switch on the Sima STP-3000to the ON position. Check the battery voltage indicator if it indicates within 12 to 13-volts. If it does not, check your battery and connections to the Sima STP-3000inverter. The other indicators should be off.
WARNING! | Do not operate the Sima STP-3000 without connecting it to ground. Electrical shock hazard may result. |
6. Operation
Switch ON the Sima STP-3000from the front panel to operate the inverter. It is now ready to drive AC loads. Turn each appliance on individually for multiple operations after switching on the STP-3000inverter so as to reduce the simultaneous starting currents from all loads.
6.1 Front Panel Controls and Indicators
A. ON/OFF Switch
The ON/OFF switch turns the control circuit of the Sima STP-3000ON and OFF (See Figure 3). It does not disconnect DC power from the battery to the Sima STP-3000inverter.
The Sima STP-3000consumes about 0.2mA of current from the battery with the switch at the OFF position. It draws less than 700mA of no-load current from the battery with the switch at the ON position. A 100 ampere-hour battery can last more than a week discharging at this low current level. Switch the inverter off if battery is not recharged within a week or so.
B. Remote ON/OFF Jack
The Sima STP-3000supports remote ON/OFF switch via an optional jack which allows users to switch the inverters ON or OFF away from the installation panel (See your SIMA dealer for more details on the STP-3000Remote ON/OFF switch).
C. Battery Voltage Indicator
This indicator displays the input voltage to the Sima STP-3000inverter. It gives readings close to the battery voltage for low input currents but gives lower readings than the battery voltage due to voltage drops across cables and connections for high input currents.
The Sima STP-3000inverter may shut down when voltage goes into the red area at the top or bottom of the indicator. Normal operations should register readings in the green zone.
D. Battery Current Indicator
It displays the current drawn from the battery by the Sima STP-3000 only. Normal operations register current readings in the green area with transient operations occasionally in the yellow zone. If current level goes to the red area, the STP-3000 will reduce its output voltage to protect itself.
E. OVERTEMP Indicator
Overheating of the Sima STP-3000 results in shutting-down itself, lighting up the OVERTEMP indicator, and sounds the alarm buzzer. Over-temperature is result of operating power ratings over 2500 watt continuous output or being installed in poorly ventilated location. It will automatically restart after cooling down .
F. OVERLOAD Indicator
Overloading the Sima STP-3000 shuts the inverter down with the OVERLOAD indicator signaled. Reset the invert to OFF position, then clear the fault (remove/unplug the load), before switching the ON/OFF switch back to ON.
