1. Manuals
  2. Brands
  3. SamplexPower Manuals
  4. Inverter
  5. PST-1500-12
  6. Owner's manual

SamplexPower PST-1500-12 Owner's Manual

Dc-ac power inverter pure sine wave
Hide thumbs Also See for PST-1500-12:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Owner's Manual
DC-AC Power
Inverter
Pure Sine Wave
PST-1500-12
PST-1500-24
PST-2000-12
PST-2000-24
owner's
Please read this
manual before
Manual
installing your
inverter

Advertisement

Table of Contents
loading

Related Manuals for SamplexPower PST-1500-12

Summary of Contents for SamplexPower PST-1500-12

  • Page 1 DC-AC Power owner's Please read this manual before Manual Inverter installing your Pure Sine Wave inverter PST-1500-12 PST-1500-24 PST-2000-12 PST-2000-24...

  • Page 2: Table Of Contents

    Owner's MAnuAl | Index Section 1 Safety Instructions ........3 Section 2 General Information ........6 Section 3 Limiting Electromagnetic Interference (EMI) ....... 11 Section 4 Powering Direct / Embedded Switch Mode Power Supplies (SMPS) ............12 Section 5 Principle of Operation ....... 14 Section 6 Layout ............

  • Page 3: Safety Instructions

    seCtIOn 1 | safety Instructions The following safety symbols will be used in this manual to highlight safety and information: WARninG! Indicates possibility of physical harm to the user in case of non-compliance. cAUtion! Indicates possibility of damage to the equipment in case of non-compliance. inFo Indicates useful supplemental information.

  • Page 4: Precautions When Working With Batteries

    seCtIOn 1 | safety Instructions Preventing fire and explosion hazards • Working with the unit may produce arcs or sparks. Thus, the unit should not be used in areas where there are flammable materials or gases requiring ignition protected equipment. These areas may include spaces containing gasoline-powered machinery, fuel tanks, and battery compartments. Precautions when working with batteries • Batteries contain very corrosive diluted sulphuric acid as electrolyte. Precautions should be taken to prevent contact with skin, eyes or clothing. • Batteries generate Hydrogen and oxygen during charging resulting in evolution of explosive gas mixture. Care should be taken to ventilate the battery area and follow the battery manufacturer’s recommendations. • Never smoke or allow a spark or flame near the batteries.
  • Page 5 seCtIOn 1 | safety Instructions the 12V battery version and 33.0 VDC for the 24V battery version to prevent permanent damage to the unit. Please observe the following precautions: • Ensure that the maximum charging voltage of the external battery charger / alterna- tor / solar charge controller does not exceed 16.5 VDC for the 12V battery version and 33.0 VDC for the 24V battery version • Do not use unregulated solar panels to charge the battery connected to this unit. Under cold ambient temperatures, the output of the solar panel may reach > 22 VDC for 12V Battery System and > 44 VDC for the 24V Battery system. Always use a charge controller between the solar panel and the battery. • Do not connect this unit to a battery system with a voltage higher than the rated bat- tery input voltage of the unit (e.g. do not connect the 12V version of the unit to 24V battery system or the 24V version to the 48V Battery System) Preventing Reverse Polarity on the input Side When making battery connections on the input side, make sure that the polarity of bat- tery connections is correct (Connect the Positive of the battery to the Positive terminal of the unit and the Negative of the battery to the Negative terminal of the unit). If the...

  • Page 6: General Information

    seCtIOn 2 | General Information The following definitions are used in this manual for explaining various electrical concepts, specifications and operations: Peak Value: It is the maximum value of electrical parameter like voltage / current. RMS (Root Mean Square) Value: It is a statistical average value of a quantity that varies in value with respect to time. for example, a pure sine wave that alternates between peak values of Positive 169.68V and Negative 169.68V has an RMS value of 120 VAC. Also, for a pure sine wave, the RMS value = Peak value ÷ 1.414. Voltage (V), Volts: It is denoted by “V” and the unit is “Volts”. It is the electrical force that drives electrical current (I) when connected to a load. It can be DC (Direct Current – flow in one direction only) or AC (Alternating Current – direction of flow changes peri- odically). The AC value shown in the specifications is the RMS (Root Mean Square) value. current (i), Amps, A: It is denoted by “I” and the unit is Amperes – shown as “A”. It is the flow of electrons through a conductor when a voltage (V) is applied across it. Frequency (F), Hz: It is a measure of the number of occurrences of a repeating event per unit time. for example, cycles per second (or Hertz) in a sinusoidal voltage.
  • Page 7 seCtIOn 2 | General Information effect is a tendency to cancel each other. Hence, in a circuit containing both inductances and capacitances, the net Reactance (X) will be equal to the difference between the values of the inductive and capacitive reactances. The net Reactance (X) will be inductive if X > X and capacitive if X > X impedance, Z: It is the vectorial sum of resistance and reactance vectors in a circuit. Active Power (P), Watts: It is denoted as “P” and the unit is “Watt”. It is the power that is consumed in the resistive elements of the load. A load will require additional Reactive Power for powering the inductive and capacitive elements.
  • Page 8 seCtIOn 2 | General Information the inverter. The inverter can be sized based on the Active Power rating (Watts) without creating overload. Reactive Load: A device or appliance that consists of a combination of resistive, induc- tive and capacitive elements (like motor driven tools, refrigeration compressors, micro- waves, computers, audio/ video etc.). These devices require Apparent Power (VA) from the inverter to operate. The Apparent Power is a vectorial sum of Active Power (Watts) and Reactive Power (VAR). The inverter has to be sized based on the higher Apparent Power (VA). output Voltage Waveforms Sine Wave Modi ed Sine Modi ed Sine Wave Wave sits at ZERO for some time and then rises or falls...
  • Page 9 seCtIOn 2 | General Information frequency harmonic content in a modified sine wave produces enhanced radio interfer- ence, higher heating effect in inductive loads like microwaves and motor driven devices like hand tools, refrigeration / air-conditioning compressors, pumps etc. The higher frequency harmonics also produce overloading effect in low frequency capacitors due to lowering of their capacitive reactance by the higher harmonic frequencies. These capaci- tors are used in ballasts for fluorescent lighting for Power factor improvement and in single-phase induction motors as start and run capacitors. Thus, modified and square wave inverters may shut down due to overload when powering these devices.
  • Page 10 seCtIOn 2 | General Information Power Rating of the inverters The continuous output power rating of the inverter is specified in Active Power in Watts for resistive types of loads like heating elements, incandescent lamps etc. where Power factor (Pf) = 1. The Surge Power rating is for < 1 sec. Non resistive / reactive loads with Power factor < 1 like motors (Pf = 0.4 to 0.8), non Power factor corrected electronics (Pf = 0.5 to 0.6) etc, will draw higher Apparent Power in Volt Amps (VA). This Apparent Power is the sum of Active Power in Watts plus Reac- tive Power in VAR and is = Active Power in Watts ÷ Power factor. Thus, for such reactive loads, higher sized inverter is required based on the Apparent Power. further, all reac- tive types of loads require higher inrush / starting surge power that may last for > 1 to 5 sec and subsequent lower running power. If the inverter is not sized adequately based on the type of AC load, it is likely to shut down or fail prematurely due to repeated overloading. inFo The manufacturers’ specification for power rating of the appliances and devices indicates only the running power required. The surge power required by some specific types of devices as explained above has to be determined by actual test- ing or by checking with the manufacturer. This may not be possible in all cases and hence, can be guessed at best, based on some general rules of thumb.

  • Page 11: Limiting Electromagnetic Interference (Emi)

    seCtIOn 2 | General Information tABLe 2.1: inVeRteR SiZinG FActoR inverter type of Device or Appliance Sizing Factor* Laser Printer / other Devices using Quartz Lamps for heating Switch Mode Power Supplies (SMPS): no Power factor correction Photographic Strobe / flash Lights 4 (Note 1) Multiply the Running Active Power Rating {Watts} of the appliance by this Factor to arrive at the Continuous Power Rating of the inverter for powering this appliance. tABLe 2.1: noteS 1. for photographic strobe / flash unit, the surge power of the inverter should be > 4 times the Watt Sec rating of photographic strobe / flash unit.

  • Page 12: Powering Direct / Embedded Switch Mode Power Supplies (Smps)

    seCtIOn 4 | Powering Direct / embedded switch Mode Power supplies (sMPs) Switch Mode Power Supplies (SMPS) are extensively used to convert the incoming AC power into various voltages like 3.3V, 5V, 12V, 24V etc. that are used to power various devices and circuits used in electronic equipment like battery chargers, computers, audio and video devices, radios etc. These power supplies use large capacitors in their input section for filtration. When the power supply is first turned on, there is a very large inrush current drawn by the power supply as the input capacitors are charged (The ca- pacitors act almost like a short circuit at the instant the power is turned on). The inrush current at turn-on is several to tens of times larger than the rated rMS input current and lasts for a few milliseconds. An example of the input voltage versus input current waveforms is given in fig.

  • Page 13: Input Voltage

    seCtIOn 4 | Powering Direct / embedded switch Mode Power supplies (sMPs) Input voltage RMS Current Inrush current Fig 4.1: Inrush current in an SMPS Peak Current Non-linear Input Current RMS Current Input Sine Wave Voltage TIME Fig. 4.2: High Crest Factor of current drawn by SMPS SAMLEX AMERICA INC.

  • Page 14: Principle Of Operation

    seCtIOn 5 | Principle of Operation These inverters convert DC battery voltage to AC voltage with an RMS (Root Mean Square) value of 120 VAC, 60 Hz RMS. The waveform of the AC voltage is a pure sine wave form that is same as the waveform of grid power (Supplementary information on pure sine waveform and its advantages are discussed on pages 8 & 9). fig. 5.1 below specifies the characteristics of 120 VAC, 60 Hz pure sine waveform. The instantaneous value and polarity of the voltage varies cyclically with respect to time. for example, in one cycle in a 120 VAC, 60 Hz system, it slowly rises in the positive direction from 0V to a peak positive value “Vpeak” = + 168.69V, slowly drops to 0V, changes the polarity to negative direction and slowly increases in the negative direction to a peak...

  • Page 15: Layout

    seCtIOn 6 | layout PST-1500 & PST-2000: FRONT PST-1500 & PST-2000: FRONT - showing compartment containing AC output terminals for hardwiring. PST-1500 & PST-2000: BACK LEGEND Power ON/OFF Switch 11. Metal Strain Relief Clamp for AC Output Cable Green LED - Power ON 12.

  • Page 16: General Information On Batteries For Powering Inverters

    seCtIOn 7 | General Information on Batteries for Powering Inverters Lead-acid batteries can be categorized by the type of application: Automotive service - Starting/Lighting/Ignition (SLI, a.k.a. cranking), and Deep cycle service. Deep Cycle Lead Acid Batteries of appropriate capacity are recommended for the powering of inverters. Deep cycle Lead Acid Batteries Deep cycle batteries are designed with thick-plate electrodes to serve as primary power sources, to have a constant discharge rate, to have the capability to be deeply dis- charged up to 80 % capacity and to repeatedly accept recharging. They are marketed for use in recreation vehicles (RV), boats and electric golf carts – so they may be referred to as RV batteries, marine batteries or golf cart batteries. Use Deep Cycle batteries for powering these inverters. Rated capacity in Ampere-hour (Ah) Battery capacity “C” is specified in Ampere-hours (Ah). An Ampere is the unit of meas- urement for electrical current and is defined as a Coulomb of charge passing through an electrical conductor in one second. The Capacity “C” in Ah relates to the ability of the battery to provide a constant specified value of discharge current (also called “C-Rate”) over a specified time in hours before the battery reaches a specified discharged terminal voltage (Also called “End Point Voltage”) at a specified temperature of the electrolyte.
  • Page 17 seCtIOn 7 | General Information on Batteries for Powering Inverters typical Battery Sizes The Table 7.1 below shows details of some popular battery sizes: tABLe 7.1: PoPULAR BAtteRY SiZeS Bci* Group Battery Voltage, V Battery capacity, Ah 27 / 31 GC2** * Battery Council International; ** Golf Cart Specifying charging / Discharging currents: c-Rate Electrical energy is stored in a cell / battery in the form of DC power. The value of the stored energy is related to the amount of the active materials pasted on the battery plates, the surface area of the plates and the amount of electrolyte covering the plates.
  • Page 18 seCtIOn 7 | General Information on Batteries for Powering Inverters Table 7.2 below gives some examples of C-Rate specifications and applications: tABLe 7.2: DiScHARGe cURRent RAteS - “c-RAteS” Hours of discharge time “t” c-Rate Discharge current in Amps example of c-Rate till the “end Point Voltage” Discharge currents Fraction Decimal Subscript for 100 Ah battery 0.5 Hrs.
  • Page 19 seCtIOn 7 | General Information on Batteries for Powering Inverters 12 Volt Lead-Acid Battery Chart - 80˚F / 26.7˚C 16.5 C/10 16.0 CHARGE C/20 15.5 C/40 15.0 14.5 14.0 13.5 13.0 C/100 C/20 12.5 C/10 DISCHARGE 12.0 11.5 11.0 10.5 Please note that X-axis shows % State of Charge.
  • Page 20 seCtIOn 7 | General Information on Batteries for Powering Inverters Table 7.3 (page 19) will show that a 100 Ah capacity battery will deliver 100% (i.e. full 100 Ah) capacity if it is slowly discharged over 20 hours at the rate of 5 Amperes (50W output for a 12V inverter and 100W output for a 24V inverter). However, if it is dis- charged at a rate of 50 Amperes (500W output for a 12V inverter and 1000W output for a 24V inverter) then theoretically, it should provide 100 AH ÷ 50 = 2 hours. However, the Table above shows that for 2 hours discharge rate, the capacity is reduced to 50% i.e. 50 Ah. Therefore, at 50 Ampere discharge rate (500W output for a 12V inverter and 1000W output for a 24V inverter) the battery will actually last for 50 Ah ÷ 50 Amperes = 1 Hour. State of charge (Soc) of a Battery – Based on “Standing Voltage” The “Standing Voltage” of a battery under open circuit conditions (no load connected to it) can approximately indicate the State of Charge (SoC) of the battery. The “Standing Voltage” is measured after disconnecting any charging device(s) and the battery load(s) and letting the battery “stand” idle for 3 to 8 hours before the voltage measurement is taken. Table 7.4 below shows the State of Charge versus Standing Voltage for a 12V battery system at 80°f (26.7ºC). for 24-volt systems, multiply by 2; for 48-volt systems, multiply by 4. tABLe 7.4: StAte oF cHARGe VeRSUS StAnDinG VoLtAGe – 12V BAtteRY Percentage of Standing Voltage of 6 cell, Standing Voltage...
  • Page 21 seCtIOn 7 | General Information on Batteries for Powering Inverters cables are thick enough to allow a negligible voltage drop between the battery and the inverter) . Inverters are provided with a buzzer alarm to warn that the loaded battery has been deeply discharged to around 80% of the rated capacity. Normally, the buzzer alarm is triggered when the voltage at the DC input terminals of the inverter has dropped to around 10.5V for a 12V battery or 21V for 24V battery at C-Rate discharge current of C/5 Amps and electrolyte temp.
  • Page 22 seCtIOn 7 | General Information on Batteries for Powering Inverters In the example given above, the 10.5V Low Battery / DC Input Alarm would trigger at around 80% discharged state (20% SoC) when the C-Rate discharge current is C/5 Amps. However, for lower C-Rate discharge current of C/10 Amps and lower, the battery will be almost completely discharged when the alarm is sounded. Hence, if the C-Rate dis- charge current is lower than C/5 Amps, the battery may have completely discharged by the time the Low DC Input Alarm is sounded.
  • Page 23 seCtIOn 7 | General Information on Batteries for Powering Inverters Please consider using the following Programmable Low Battery Cut-off / “Battery Guard” Models manufactured by Samlex America, Inc. www.samlexamerica.com - BG-40 (40A) – for up to 400W, 12V inverter or 800W, 24V inverter - BG-60 (60A) - for up to 600W, 12V inverter or 1200W, 24V inverter - BG-200 (200A) - for up to 2000W, 12V inverter or 4000W, 24V inverter Depth of Discharge of Battery and Battery Life The more deeply a battery is discharged on each cycle, the shorter the battery life. Using more batteries than the minimum required will result in longer life for the battery bank. A typical cycle life chart is given in the Table 7.5 below: tABLe 7.5: tYPicAL cYcLe LiFe cHARt Depth of Discharge cycle Life of Group cycle Life of Group cycle Life of Group % of Ah capacity...
  • Page 24 seCtIOn 7 | General Information on Batteries for Powering Inverters terminal of Battery 3 is connected to the Positive terminal of Battery 2. The Negative terminal of Battery 2 is connected to the Positive terminal of Battery 1. The Negative ter- minal of Battery 1 becomes the Negative terminal of the 24V battery bank. Parallel connection Cable “A” Battery 1 Battery 2 Battery 3 Battery 4 12V Inverter or 12V Charger Cable “B” Fig 7.3: Parallel Connection When two or more batteries are connected in parallel, their voltage remains the same but their Ah capacities add up. fig. 7.3 above shows 4 pieces of 12V, 100 Ah batteries connected in parallel to form a battery bank of 12V with a capacity of 400 Ah. The four Positive terminals of Batteries 1 to 4 are paralleled (connected together) and this com- mon Positive connection becomes the Positive terminal of the 12V bank. Similarly, the four Negative terminals of Batteries 1 to 4 are paralleled (connected together) and this common Negative connection becomes the Negative terminal of the 12V battery bank.
  • Page 25 seCtIOn 7 | General Information on Batteries for Powering Inverters are connected in series to form a 12V, 200 Ah battery (String 1). Similarly, two 6V, 200 Ah batteries, Batteries 3 and 4 are connected in series to form a 12V, 200 Ah battery (String 2). These two 12V, 200 Ah Strings 1 and 2 are connected in parallel to form a 12V, 400 Ah bank. cAUtion! When 2 or more batteries / battery strings are connected in parallel and are then connected to an inverter or charger (See figs 7.3 and 7.4 given above), attention should be paid to the manner in which the charger / inverter is con- nected to the battery bank. Please ensure that if the Positive output cable of the battery charger / inverter (Cable “A”) is connected to the Positive battery post of the first battery (Battery 1 in fig 7.3) or to the Positive battery post of the first battery string (Battery 1 of String 1 in fig. 7.4), then the Negative out- put cable of the battery charger / inverter (Cable “B”) should be connected to the Negative battery post of the last battery (Battery 4 as in fig. 7.3) or to the Negative Post of the last battery string (Battery 4 of Battery String 2 as in fig. 7.4). This connection ensures the following: - The resistances of the interconnecting cables will be balanced. - All the individual batteries / battery strings will see the same series resistance. - All the individual batteries will charge / discharge at the same charging current and thus, will be charged to the same state at the same time.
  • Page 26 seCtIOn 7 | General Information on Batteries for Powering Inverters The first step is to estimate the total AC watts (W) of load(s) and for how long the load(s) will operate in hours (H). The AC watts are normally indicated in the electrical nameplate for each appliance or equipment. In case AC watts (W) are not indicated, for- mula 1 given above may be used to calculate the AC watts. The next step is to estimate the DC current in Amperes (A) from the AC watts as per formula 2 above. An example of this calculation for a 12V inverter is given below: Let us say that the total Ac Watts delivered by the 12V inverter = 1000W. Then, using formula 2 above, the DC current to be delivered by the 12V batteries = 1000W ÷10 = 100 Amperes. next, the energy required by the load in Ampere Hours (Ah) is determined. for example, if the load is to operate for 3 hours then as per formula 3 above, the energy to be delivered by the 12V batteries = 100 Amperes × 3 Hours = 300 Ampere Hours (Ah).

  • Page 27: Installation

    seCtIOn 8 | Installation WARninG! 1. Before commencing installation, please read the safety instructions explained in the Section titled “Safety Instructions” on page 3. 2. It is recommended that the installation should be undertaken by a qualified, licensed / certified electrician. 3. Various recommendations made in this manual on installation will be super- seded by the National / Local Electrical Codes related to the location of the unit and the specific application. Location of installation Please ensure that the following requirements are met: cool: Heat is the worst enemy of electronic equipment. Hence, please ensure that the unit is installed in a cool area that is also protected against heating effects of direct exposure to the sun or to the heat generated by other adjacent heat generating devices.
  • Page 28 seCtIOn 8 | Installation The corrosive fumes will corrode and damage the unit and if the gases are not venti- lated and allowed to collect, they could ignite and cause an explosion. Accessibility: Do not block access to the front panel. Also, allow enough room to access the AC receptacles and DC wiring terminals and connections, as they will need to be checked and tightened periodically. Preventing Radio Frequency interference (RFi): The unit uses high power switching circuits that generate RfI. This RfI is limited to the required standards. Locate any elec- tronic equipment susceptible to radio frequency and electromagnetic interference as far away from the inverter as possible.
  • Page 29 seCtIOn 8 | Installation 19.2 107.5 468.2 107.5 Fig. 8.1 PST 1000 & PST 2000: Overall Dimensions and mounting slots. Fig. 8.1: PST-1500 and PST-2000 Overall Dimensions & Mounting Slots (NOTE: Dimensions in mm) SAMLEX AMERICA INC. | 29...
  • Page 30 seCtIOn 8 | Installation Dc Side connections Preventing Dc input over Voltage It is to be ensured that the DC input voltage of this unit does not exceed 16.5 VDC for the 12 -V battery versions and 33.0 VDC for the 24 -V battery versions to prevent perma- nent damage to the unit. Please observe the following precautions: - Ensure that the maximum charging voltage of the external battery charger / alterna- tor / solar charge controller does not exceed 16.5 VDC for the 12V battery version and 33.0 VDC for the 24 -V battery version - Do not use unregulated solar panels to charge the battery connected to this unit. Under open circuit conditions and in cold ambient temperatures, the output of the solar panel may be > 44 VDC. Always use a charge controller between the solar panel and the battery. - When using Diversion Charge Control Mode in a charge controller, the solar / wind / hydro source is directly connected to the battery bank. In this case, the controller will divert excess current to an external load. As the battery charges, the diversion duty cycle will increase. When the battery is fully charged, all the source energy will flow into the diversion load if there are no other loads.
  • Page 31 seCtIOn 8 | Installation terminal of the inverter ► Battery (–) terminal) is completed, these capacitors will start charging and the unit will momentarily draw very heavy current that will produce sparking on the last contact in the input loop even when the oN/ off switch on the inverter is in the off position. Ensure that the external fuse is inserted only after all the connections in the loop have been completed so that the sparking is limited to the fuse area.
  • Page 32 seCtIOn 8 | Installation the cables that connects the battery to the inverter, thousands of Amperes of current can flow from the battery to the point of shorting and that section of the wire will be- come red-hot, the insulation will melt and the cable will ultimately break. This interrup- tion of very high current will generate a hazardous, high temperature, high-energy arc with accompanying high-pressure wave that may cause fire, damage nearby objects and cause injury. To prevent occurrence of hazardous conditions under short circuit condi- tions, an appropriate fuse should be used in the battery circuit that will limit the cur- rent, blow in a very short time and quench the arc in a safe manner. for this purpose, UL Class T fuse or equivalent with Ampere Interrupting Capacity (AIC) of at least 10,000A should be used (As per UL Standard 248-15). This special purpose current limiting, very fast acting fuse will blow in less than 8 ms under short circuit conditions. Appropriate...
  • Page 33 Samlex America external Minimum 0.91M / 1.83M / 3.05M / inverter Model no. Fuse Size Wire Size 3 ft. 6 ft. 10 ft. installation Kit PST-1500-12 200A AWG #2 1.6% 3.2% 5.3% DC-2000-KIT PST-1500-24 100A AWG #4 0.6% 1.3% 2.1% DC-1000-KIT PST-2000-12...
  • Page 34 seCtIOn 8 | Installation Ac SiDe connectionS WARninG! Preventing Paralleling of the Ac output 1. The AC output of the inverter cannot be synchronized with another AC source and hence, it is not suitable for paralleling. The AC output of the in- verter should never be connected directly to an electrical breaker panel / load center which is also fed from the utility power/ generator. Such a connection will result in parallel operation and AC power from the utility / generator will be fed back into the inverter which will instantly damage the output section of the inverter and may also pose a fire and safety hazard. If an electrical breaker panel / load center is being fed from the utility power / generator and the inverter is required to feed this panel as backup power source, the AC power from the utility power/ generator and the inverter should first be fed to a manual selector switch / Automatic Transfer Switch and the output of the manual selector switch / Automatic Transfer Switch should be con- nected to the electrical breaker panel / load center.
  • Page 35 seCtIOn 8 | Installation The GfCI will trip due to the following conditions: - Leakage or ground fault - Neutral to Ground bonding (connection) on the load side of the GfCI cAUtion! Do not feed the output from the GfCI receptacle to a Breaker Panel / Load Center where the Neutral is bonded to the Earth Ground. This will trip the GfCI. If the AC output is required to be fed to a Breaker Panel / Load Center, use hardwiring connections (please see details given below). Ac output connections for Hardwiring for connecting the AC output of the inverter to an AC Distribution Panel / Load Center, separate connections are available for hard wiring. Please refer to fig 6.1. Compartment (13) contains terminals for AC output. The compartment is covered by Cover Plate (12) with the help of 4 screws. AC output connections are as follows: Line “L” (15) and neutral “n” (16) terminals. Please note that Line terminal “L” (15) of the AC Terminal Block and the Line terminal on the Line side of the GfCI are internally connected together at the PCB. Similarly, Neutral terminal “N” (16) on the AC Terminal Block and the Neutral terminal on the Line side of the GfCI are internally connected together at the PCB • Hole diameter: 4 mm / 0.16" • Set screw: #6 (UNf, 40 Threads per Inch) or M3.5 ( Coarse Pitch 0.6 mm) Ac Ground terminal (14) • Stud: #6 (UNC, 32 Threads Per Inch) neutral to chassis Ground Bonding • Neutral “N” (16) is bonded to the metal chassis of the inverter through a loop of wire...

  • Page 36: Operation

    seCtIOn 9 | Operation Ac output cable Sizing & conductor termination for Hard-wiring Use 3 conductor cable with at least 90 C insulation rating. Based on the maximum output current of 12.5A for PST-1500 and 16.7A for PST-2000, the minimum size of each of the 3 conductors of the AC output cable should be AWG #12 for both the inverters. This is the minimum size recommended in NEC Table 310.17 for up to 20A over current protection. for firm connection when using set screw type of terminals, use Insulated Pin Type of Terminals for termination of the Line and Neutral conductors and Non Insulated Ring Type of Terminal for the Grounding conductor. for convenience, the following terminals have been provided: For Line and neutral wires: Nylon Insulated, Cord End Terminals for AWG #12 wire ................ 2 pieces For neutral wire: Non Insulated Ring Terminal for #6 stud ....... 1 piece Use proper crimping Tool to crimp the terminals to the bare ends of the wire. Make sure that the connections are tight and firm. Please ensure that the AC cable is adequately clamped by the metal Strain Relief Clamp (11). Please use the following type designation of AC cord: "SE, SEoo, ST, STo, SJ, SJEoo, SJT, or SJTo." Grounding to earth or to other designated ground for safety, ground the metal chassis of the inverter to the Earth Ground or to the other designated ground (for example, in a mobile RV, the metal frame of the RV is normally des- ignated as the negative DC ground). An equipment grounding Lug (7) has been provided...
  • Page 37 seCtIOn 9 | Operation Switching the inverter on/oFF Before switching on the inverter, check that all the AC loads have been switched off. The oN/off switch (1) on the front panel of the inverter is used to switch on and switch off the inverter. This switch operates a low power control circuitry, which in turn controls all the high power circuitry. optional Remote Control Model RC-200 may also be used for oN/off control. cAUtion! Please note that the oN/off switch is not switching the high power battery input circuit. Parts of the DC side circuit will still be alive even when the switch is in the off position. Hence, disconnect the DC and AC sides before working on any circuits con- nected to the inverter. When the inverter is switched oN, the GREEN "Power oN" LED (2, fig. 6.1) will be lighted. This LED indicates that the input section of the inverter is operating normally. Under normal operating conditions, AC output voltage will now be available at the GfCI Duplex Recepta- cle (5). The Green indicator light on the GfCI will be lighted.

  • Page 38: Protections

    seCtIOn 10 | Protections The inverter has been provided with protections detailed below: overload / Short circuit Shut Down The inverter can provide higher than normal instantaneous power (< 1 second) limited to the surge power rating of the inverter. Also, the inverter can provide continuous power limited to the continuous power rating of the inverter. If there is an overload beyond these specified limits, the AC output of the unit will be shut down permanently. RED LED marked "overload" will turn oN, the GREEN indication on the GfCI will be off and buzzer alarm will sound. The GREEN "Power oN" LED (2) will continue to be lighted. The unit will be latched in this shutdown condition and will require manual reset. To reset, switch off the power oN/off switch, wait for 3 minutes and then switch oN again.
  • Page 39 The temperature of a critical hot spot inside the inverter is monitored and at 203°f / 95°C, the AC output of the inverter is shut down temporarily. Buzzer alarm will be sounded. The GREEN "Power oN"LED (2) will remain lighted. The GREEN indication light on the GfCI will be off. The unit will automatically reset after the hot spot has cooled down to 158°f / 70°C. internal Dc Side Fuses The following DC side fuses have been provided for internal protection of the DC input side. The fuses are 32V, Automotive Type Blade fuses, Type "ATC" by Cooper Bussmann or equivalent: PST-1500-12: 5 pieces of 40A in parallel = 200A total PST-1500-24: 5 pieces of 20A in parallel = 100A total PST-2000-12: 6 pieces of 40A in parallel = 240A total PST-2000-24: 6 pieces of 20A in parallel = 120A total Reverse Polarity at the Dc input terminals The Positive of the battery should be connected to the Positive DC input terminal of the inverter and the Negative of the battery should be connected to the Negative DC input terminal of the inverter. A reversal of polarity (the Positive of the battery wrongly con- nected to the Negative DC input terminal of the inverter and the Negative of the bat- tery wrongly connected to the Positive DC input terminal of the inverter) will blow the external / internal DC side fuses. If the DC side fuse is blown, the inverter will be dead.

  • Page 40: Trouble Shooting Guide

    seCtIOn 11 | trouble shooting Guide iSSUe PoSSiBLe cAUSe ReMeDY When switched ON, The There is no voltage at the Check the continuity of the battery GREEN "Power ON"LED (2) DC input terminals / 12V input circuit. does not light. Buzzer is Off. power outlet in the vehicle Check that the internal/external battery fuse/ There is no AC output volt-...
  • Page 41 seCtIOn 11 | trouble shooting Guide iSSUe PoSSiBLe cAUSe ReMeDY There is no AC output. The Shut-down due to high Check that the voltage at the DC input termi- GREEN "Power ON" LED input DC voltage – nals is less than 16.5V for 12V versions and less (2) is lighted.

  • Page 42: Specifications

    12 | specifications MoDeL no. PSt-1500-12 PSt-1500-24 oUtPUt oUTPUT VoLTAGE 120 VAC ± 3% 120 VAC ± 3% MAXIMUM oUTPUT CURRENT 12.5A 12.5A oUTPUT fREQUENCY 60 Hz ± 1% 60 Hz ± 1% TYPE of oUTPUT WAVEfoRM Pure Sine Wave Pure Sine Wave ToTAL HARMoNIC DISToRTIoN of < 3% < 3% oUTPUT WAVEfoRM CoNTINUoUS oUTPUT PoWER 1500 Watts 1500 Watts (At Power factor = 1) SURGE oUTPUT PoWER 3000 Watts 3000 Watts (At Power factor = 1; <1 sec) PEAK EffICIENCY (At full load)
  • Page 43 seCtIOn 12 | specifications cAUtion! RiSK oF FiRe Do not replace any vehicle fuse with a rating higher than recommended by the vehicle manufacturer. This product is rated to draw 200 Amperes from 12V battery vehicle outlet and 100 Amperes from 24V battery vehicle outlet. Ensure that the electrical system in your vehicle can supply this product without caus- ing the vehicle fusing to open. This can be determined by making sure that the fuse in the vehicle, which protects the outlet, is rated higher 200 amperes (12V battery), or 100 amperes (24V battery). Information on the vehicle fuse ratings is typically found in the vehicle operator's manual. If a vehicle fuse opens re- peatedly, do not keep on replacing it. The cause of the overload must be found.
  • Page 44 seCtIOn 12 | specifications MoDeL no. PSt-2000-12 PSt-2000-24 oUtPUt oUTPUT VoLTAGE 120 VAC ± 3% 120 VAC ± 3% MAXIMUM oUTPUT CURRENT 16.7A 16.7A oUTPUT fREQUENCY 60 Hz ± 1% 60 Hz ± 1% TYPE of oUTPUT WAVEfoRM Pure Sine Wave Pure Sine Wave ToTAL HARMoNIC DISToRTIoN of < 3% < 3% oUTPUT WAVEfoRM CoNTINUoUS oUTPUT PoWER 2000 Watts 2000 Watts (At Power factor = 1) SURGE oUTPUT PoWER 3500 Watts 3500 Watts (At Power factor = 1; <1 sec) PEAK EffICIENCY (At full load) (i) NEMA5-20R GfCI Duplex Receptacle (ii) Terminal AC oUTPUT CoNNECTIoNS block for hardwiring: Hole diameter (4 mm / 0.16")
  • Page 45 seCtIOn 12 | specifications cAUtion! RiSK oF FiRe Do not replace any vehicle fuse with a rating higher than recommended by the vehicle manufacturer. This product is rated to draw 240 Amperes from 12V vehicle outlet and 120 Amperes from 24V battery vehicle outlet. Ensure that the electrical sys- tem in your vehicle can supply this product without causing the vehicle fusing to open. This can be determined by making sure that the fuse in the vehicle, which protects the outlet, is rated higher 240 amperes (12V battery), or 120 amperes (24V battery). Infor- mation on the vehicle fuse ratings is typically found in the vehicle operator's manual. If a vehicle fuse opens repeatedly, do not keep on replacing it. The cause of the overload must be found.

  • Page 46: Warranty

    13 | warranty 2 YeAR LiMiteD WARRAntY The PST-1500-12, PST-1500-24, PST-2000-12 and PST-2000-24 are 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“). Warranty outside of the United States and Canada is limited to 6 months. for a warranty claim, the Purchaser should contact the place of purchase to obtain a Return Authoriza- tion Number. The defective part or unit should be returned at the Purchaser’s expense to the author- ized location. A written statement describing the nature of the defect, the date of pur- chase, the place of purchase, and the Purchaser’s name, address and telephone number should also be included. If upon the Warrantor’s examination, the defect proves to be the result of defective material or workmanship, the equipment will be repaired or replaced at the Warran- tor’s option without charge, and returned to the Purchaser at the Warrantor’s expense.
  • Page 47 nOtes: SAMLEX AMERICA INC. | 47...
  • Page 48 Contact 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-PST-1500-2000-12-24-0513...

This manual is also suitable for:

Pst-1500-24Pst-2000-12Pst-2000-24

Table of Contents