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Table of Contents
Summary of Contents for Longtime LIV-10
- Page 1 DC AC POWER INVERTER LIV ‐ 10 / LIV‐20 / LIV‐30 User Manual ...
- Page 2 Save This Manual Please read this manual carefully prior to storage, installation, wiring, operation and maintenance of the Power Inverter. This manual contains important instructions and warnings that you should follow during the storage, installation, wiring, operation and maintenance of the Power Inverter. Failure to follow these instructions and warnings will void the warranty. Please note that only qualified and trained technician can do installation, wiring, operation ...
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Page 3: Table Of Contents
Contents Section 1: Safety Instruction ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 1 1‐1 Notes on Using the Instruction Manual ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 1 1‐2 General Safety Instruction ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 1 1‐2‐1 Installation and Wiring Compliance ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 1 1‐2‐2 Preventing Electrical Shock ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 1 ... - Page 4 4‐5 Cooling By Forced Air Fan Ventilation ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 9 4‐6 Precautions When Working with Batteries ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 9 4‐7 DC Side Connection ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 9 Section 5: Operation ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 11 5‐1 Start‐Up ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ 11 ...
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Page 5: Section 1: Safety Instruction
Section 1: Safety Instruction 1‐1 Notes on Using the Instruction Manual Failure to observe this instruction can cause material damage and impair the function of the device. Relating to a danger from electrical current or voltage. Failure to observe this instruction can cause material damage and personal injury and impair the function of the device. 1‐2 General Safety Instruction 1‐2‐1 Installation and Wiring Compliance Installation and wiring must comply with the local and national electrical codes and must be done by a certified electrician. 1‐2‐2 Preventing Electrical Shock Always connect the grounding connection on the POWER INVERTER to the appropriate grounding system. Disconnect all AC and DC side connections before working on any circuits associated with the POWER INVERTER. Pressing the ON / OFF button on the POWER INVERTER to OFF position may not entirely remove dangerous voltages. Be careful when touching bare terminals of capacitors. The capacitors may retain high lethal voltages even after the power has been removed. Discharge the capacitors before working on the circuits. 1‐2‐3 Installation Environment ... -
Page 6: 1-2-5 Precaution When Working With Batteries
fuel tanks, battery compartments. 1‐2‐5 Precaution 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 are and follow the battery manufacturer recommendation. Never smoke or allow a spark or flame near the batteries. Use caution to reduce the risk of dropping a metal tool on the battery. It could spark or short circuit the battery or other electrical parts and could cause an explosion. Remove metal items like rings, bracelets and watches when working with batteries. The batteries can produce a short circuit current high enough to weld a ring or the like to metal and thus cause a severe burn. ... -
Page 7: 1-3-3 Preventing Dc Input Over Voltage
Do not directly connect to the hot side of the POWER INVERTER to the two hot legs of the 115 / 230V AC electrical breaker panel / load centre where multi‐wire (common neutral) branch circuit wiring method is used for distributing of AC Power. This may lead to overloading / overheating of the neutral conductor and is a risk of fire. A split phase transformer (Isolated or Auto transformer) of suitable wattage rating (25% more ... -
Page 8: Section 2: Introduction
Section 2: Introduction Thank you for selecting this POWER INVERTER. It is a state‐of‐the‐art electronic POWER INVERTER that uses the latest technology. The LIV Series POWER INVERTER is an advanced pure sine wave POWER INVERTER which provides reliable regulated, transient‐free AC power to sensitive equipment, ranging from computers & telecommunication systems to computerized instrument. ... -
Page 9: Section 3: Outlook
Section 3: Outlook 3‐1 Front View Standard Model Customized Model No. Description 1 Ventilation exit 2 Control buttons 3 LCD display 4 LED indicators 5 Battery N.F.B. 6 AC input N.F.B. 7 AC output N.F.B. (option) 3‐2 Rear View 48VDC Model 125VDC Model 5 ... -
Page 10: 3-3 Terminal Block Connecting Diagram
No. Description 1 Output socket 2 Terminal block 3 RS232 4 Dry contact 5 Ventilation exit 6 Battery terminal 3‐3 Terminal Block Connecting Diagram ... -
Page 11: 3-4 Operation Panel
3‐4 Operation Panel No. Description 1 Page up button 2 Menu button 3 ON / OFF button or page down button 4 The green LED is on when connects to AC power 5 The green LED is on when connects to DC power. 6 The red LED is on means bypass mode 7 The green LED is on means inverter mode 8 The green LED is on means loads connected (>5%) 9 The red LED is on means inverter fault 7 ... -
Page 12: Section 4: Installation
Section 4: Installation 4‐1 Unpacking and Inspection Unpack the packaging and check the package contents. The shipping package contains: A POWER INVERTER A user manual Inspect the appearance of the POWER INVERTER to see if there is any damage during transportation. Do not turn on the unit and notify the carrier and dealer immediately if there is any damage or lacking of some parts. 4‐2 Installation and Wiring Compliance Installation and wiring must comply with the local and the national electrical codes and must be done by a certified electrician. The DC input positive and negative terminals are isolated from the chassis. Similarly, the neutral ... -
Page 13: 4-5 Cooling By Forced Air Fan Ventilation
4‐5 Cooling By Forced Air Fan Ventilation The POWER INVERTER produces heat when operating. The amount of heat produced is proportional to the amount of power supplied by the POWER INVERTER. A DC fan is used to provide forced air cooling of this POWER INVERTER. The fan is thermostatically controlled and will be switched on only if the temperature of certain hot spot inside the POWER INVERTER rises ... - Page 14 Failure to place a fuse on ”＋” cables running between the POWER INVERTER and battery may cause Barrage to the POWER INVERTER and wire void warring. The installation of a fuse must be on positive cable. Failure to place a fuse on cables running between the POWER INVERTER and battery may cause damage to the POWER INVERTER and will void warranty. 10 ...
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Page 15: Section 5: Operation
Section 5: Operation 5‐1 Start‐Up Press ON/OFF button lasts for 2 seconds To avoid touch error or push button fault, be sure to press ON / OFF button lasts for 2 seconds, till the LCD display “WELCOME TO POWER INVERTER WORLD” 5‐2 Shutdown Press “ON/OFF” button lasts for 2 seconds To avoid touch error or push button fault, be sure to press the button lasting for 2seconds. 5‐3 System Test LCD displays ”POWER INVERTER LOOP CHECK”. Test before the equipment operates. If DC voltage is too low, overheat or other abnormal status, the panel will have fault display, the unit will auto shutdown 5 seconds later. ... -
Page 16: Section 6: Troubleshooting
Section 6: Troubleshooting SYMPTOM POSSIBLE CAUSE REMEDY When switching on, There is no voltage at the 1. Check the continuity of the battery the AC INPUT Green DC input terminal input circuit. LED does not light. 2. Check that the battery fuse is intact. Buzzer is off. There is Replace if blown. no AC Voltage 3. Check that all connections in the battery input circuit are tight. LCD displays “DC DC input voltage is less 1. Use true RMS reading meter to Volt too low, can’t than the lowest working measure if the DC Voltage reaches to turn on”, cannot voltage the lowest working voltage. (48VDC power on. System: 42Vdc, 125VDC System: 105Vdc) 2. Verify if DC Cable is loose. 3. Verify if DC Voltage (48V / 125V DC) comply to the POWER INVERTER spec. “FAULT” LED lights Permanent shut down of 1. Reduce the load. The load is not on, buzzer alarms or the AC output due to suitable as it requires higher power to LCD displays ... -
Page 17: Section 7: Communication Port
Section 7: Communication Port 7‐1 Dry Contact 7‐2 RS232 R S- 232 PI NS A SSI GNM ENT : R S- 232 PI NS A SSI GNM ENT : R S- 232 PI NS A SSI GNM ENT : R S- 232 PI NS A SSI GNM ENT : R S- 232 PI NS A SSI GNM ENT : R S- 232 PI NS A SSI GNM ENT :... -
Page 18: Section 8: Warranty
Section 8: Warranty Seller warrants this product for a period of 1 YEAR from the date of shipment, if used in accordance with all applicable instruction, to be free from original defects in material and workmanship within the warranty period. If the product has any failure problem within the warranty ... -
Page 19: Section 9: Specification
Section 9: Specification Model LIV‐10 LIV‐20 LIV‐30 Rating 1KVA 2KVA 3KVA Max. 48Vdc 19A 38A 57A Current 125Vdc 7.6A 15A 22A 48VDC (42~64VDC) Voltage Range 125VDC (105~160VDC) DC Input Option: 110VDC (95~144VDC) Connections Hard‐wired Connection Efficiency > 85% (Full Load) Nominal Voltage 110Vac or 230Vac ±25% Utility Power Frequency 50 or 60Hz ±3Hz (Bypass) Protection Electronic circuits & AC circuit breaker Output Power 800W ... -
Page 20: Section 10: Wiring Diagram
Section 10: Wiring Diagram 16 ...