Hardware Insight, Alternative  and Renewable Energy Engineer, Inveter and Solar Installation in Lagos, Nigeria, Sales, Repairs, Support Servicess

header photo

15kva Gpower Inverter

Quick Overview

It converts DC power into AC power. EP series will automatically transfer to inverter and provide power when AC supply is interrupted unexpectedly. Once set up, all functions of the inverter/charger are fully automatic.


  • LCD Display, 1-Phase, 15000W, 192 VDC, input voltage: 220V AC, output voltage: 220V AC 50Hz
  • Voltage Waveform: Pure Sine wave
  • Efficiency (Normal mode) : 99%
  • Supports inductive loads
  • Alarm on battery: Low battery & Battery over voltage
  • Alarm on abnormal operation: Over load, Short-circuit, & Over heat
  • Size (LxWxH): 720mm x 450mm x 865mm
  • G.W(Kg): 15000W/ 82.8kg

Applied in the field of industrial process controls, battery charging requirements, personal computers, telecommunications, graphics displays, plating and gold recovery industries and wherever required in the commercial, telecoms, mining or industrial markets. Commercial Solar, Recreational Vehicles, Mobile Office, Industrial Wind, Boats, Truck, & RV Residential Solar, Emergency Vehicles, Residential Wind, Fleet & Utility Vehicles, Camping & Outdoors, Renewable Newsletter.

Main Features:

 Durable construction for long life under extreme environmental conditions
 Low idle current (less than 1 watt) conserves energy when no loads are present
 Soft start capability for starting heavy loads
 Built-in starting control circuits for two- and three-wire generator starting systems
 Simplified controls with a snap-on cover that protects settings from being accidentally changed
 Better thermal performance allows full output power to 50°C (122°F) without de-rating
 High surge capacity starts more difficult loads and handles overload conditions reliably
 Durable powder coated, corrosion resistant steel chassis
Automatic three-stage battery charger (bulk, absorption, and float) and battery equalization
 New power factor corrected (PFC) charging, combined with a sophisticated multi-stage battery charging algorithm, reduces electricity draw and generator run-time 
 Pure copper transformer inside and pure copper DC terninal port outside



AC Efficiency
The ratio of the output power from the UPS to the input power from the AC utility in Line mode.

AC Utility 
The electric power furnished by an electric power plant.

The unit of battery capacity.

Ampere (Amp or A) 
The unit of for electric current.

Automatic Voltage Regulator (AVR) 
An AVR regulates voltage to the appropriate level.

Backup Time 
The time provided by battery in a UPS system when AC utility loss.

Battery Charging Current 
The current to charging the battery that is regulated from the AC utility by the circuit inside the UPS.

Backup Time/Runtime 
The duration that UPS supplies backup power to the electrical appliances while power failure. The unit of backup time is minute and calculates backup time from black out happening to battery used up.

Cold start function 
The UPS can be started from battery directly without AC utility. Some people also name it as DC start.

UPSs can often communicate with computer equipment in order to allow the UPS to trigger a controlled automatic shutdown of the computer. This is usually done when the mains has failed and the UPS battery power is close to being used up.

DC Efficiency 
The ratio of the output power from the UPS to the input power from the batteries in Battery Mode.

DC Voltage 
Normally, it is used for the battery voltage.

Electromagnetic Interference (EMI) 
Unwanted noise during the operation of a power supply or other electrical or electronic equipment.

Fast Charging 
It is the fast charging battery system to speed up charging time. For this case, the designer must be expert and use high technology in controlling charging system so battery does not damage.

The number of completed cycles in one second. It is defined as Hertz (Hz). It exists 50 or 60 Hz power system in the world.

Hot-swappable Batteries 
Allow the user to easily exchange UPS batteries without turning off the UPS.

Input Power Cord 
The cord for the AC input of UPS. Normally, there are three wires of Line-Neutral-Ground in it

Intelligent Battery Management (IBM) 
The intelligent battery management will manage charging and discharging to get longer backup times and prolong battery life. 

A power supply which produces an AC output, usually from a DC input.

Two circuits that are completely electrically separated with respect to DC potentials, and almost always also AC potentials. In power supplies, it is defined as the electrical separation of the input and output via the transformer.

Isolation Voltage 
The maximum AC or DC voltage which maybe continuously applied from input to output and/or chassis of a power supply.

Leakage Current 
A term relating to current flowing between the AC supply wires and earth ground. The term does not necessarily denote a fault condition. In power supplies, leakage current usually refers to the 60 Hertz current which flows through the EMI filter capacitors which are connected between the AC lines and ground (Y caps).

Manual Bypass Switch 
A manually operated transfer switch used to bypass the major electronics in the UPS. When it is enabled then the service engineer can have the repair service without power interruption.

Metal Oxide Varistors are added to circuits in order to control spikes. These are common in Power Strips. If you see more than two, you likely have a fairly decent Power Strip. They look like largish disk capacitors.

No Load Shut Down 
UPS will shutdown itself when the utility fails and there is no load connected to UPS. This feature is to prolong battery life.

Nominal Voltage 
A standard value assigned to a circuit for the purpose of conveniently designating its voltage class.

Overvoltage Protection
A circuit which either shuts down the power supply or crowbars the output in the event of an overvoltage condition.

Power failure
Total loss of utility power: Causes electrical equipment to stop working.

Pulse-width modulation (PWM)
A circuit used in switching regulated power supplies where the switching frequency is held constant and the width of the power pulse is varied, controlling both line and load changes with minimal dissipation.

Power Factor (PF)
The ratio of true power to apparent power in an AC circuit. In power conversion technology, power factor is used in conjunction with describing the AC input current to the power supply.

Rack-Mount UPS
UPS that can be mounted in a rack case.

Radio Frequency Interference (RFI) 
It is undesirable noise produced by a power supply or other electrical or electronic device during its operation. In power supply technology, RFI is usually taken to mean the same thing as EMI.

A socket or outlet into which a plug can be inserted to make an electrical connection.

Serial Port 
A special cable plugs into the UPS and the computer's serial (RS232) port.

Transfer Time
The amount of time it takes a stand-by or off-line type UPS to sense a power interruption and switch from utility output to inverter output. Normally expressed in milliseconds.

USB Port 
A USB cable connects to the USB port on a computer and to the UPS.

User-Replaceable Batteries
User replaceable batteries allow the user to easily exchange UPS batteries. Normally, the battery lifetime is close to 2~3 years. 

Volt (V)
The unit of measure for voltage.

Volt-Ampere (VA)
Voltage (V) multiplied by the current (ampere); apparent powe

Watt (W)
The unit of measure for true power. Watts = VA x Power Factor. 

SNMP Adapter (Simple Network Management Protocol)
Hardware that allows monitoring and management of remote UPSs that protect key network devices such as servers, routers and hubs.

Load that equals the UPS capacity.

The length of time that a UPS will support a given load while running on battery during a power outage.

Energized by a single alternating voltage.

Sine Wave
A wavefrom of a single frequency alternating current whose displacement is the sine of an angle proportional to time or distance.

Complete loss of power. Some literature considers a voltage drop below about 80V to be a blackout as well since most equipment will not operate below these levels.

Sag or Brownout 
Decrease in voltage levels which can last for periods ranging from fractions of a second to hours. Can be caused by heavy equipment coming on line such as shop tools, elevators, compressors etc. Also occurs when utility companies deliberately do this to cope with peak load times.

Buck and Boost 
A function to adjust the output of UPS. When the voltage is under normal condition then the UPS will boost the voltage higher. When the voltage is over normal condition then the UPS will buck the voltage lower.

Harmonic Distortion 
Distortion of an electrical sine wave caused by the power supplies of certain electronic devices. A mathematical representation of a distortion of a pure sine waveform.

An instantaneous, dramatic increase in voltage. Most often caused by lightning; sometimes by power coming back on after a blackout. Can cause aborted modem transfer, microchip failures and "fries" hardware.

A short-term increase in voltage, typically lasting at least 1/120 of a second.Usually caused by drops in electrical demand and widespread equipment shutdown. Can cause electronic wear and premature equipment failure.

Also known as harmonics, electro-magnetic interference (EMI), and radio frequency interference (RFI). Created by neighboring office equipment or machinery on the same power line. Can corrupt data and cause glitches.

Surge Protector
Circuitry consisting of MOVs, capacitors, rod-core inductors etc. for suppressing surges and spikes usually embedded in a power strip