Related Manuals for Ktech KE-R3K5L1EF
Summary of Contents for Ktech KE-R3K5L1EF
- Page 1 Solar Storage Inverter User Manua Product models: KE-R3K5L1EF Solar storage inverter V1.2...
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Page 2: Important Safety Instruction
Important safety instruction Please keep this manual for future use. KE-3K3LSUF- This manual contains all safety, installation and operating instructions for the solar storage inverter. Please read all instructions and precautions in the manual carefully before installation and use. Non-safety voltage exists inside the solar storage inverter. To avoid personal injury, users shall not disassemble the solar storage inverter themselves. -
Page 3: Table Of Contents
CONTENTS 1. GENERAL INFORMATION ............................. 4 ......................... 4 1.1 P RODUCT OVERVIEW AND FEATURES ........................... 5 1.2 B ASIC SYSTEM INTRODUCTION ..............................6 1.3 A PPEARANCE ............................7 1.4 D IMENSION DRAWING 2. INSTALLATION INSTRUCTIONS ........................... 8 ..........................8 2.1 I NSTALLATION PRECAUTIONS ................ -
Page 4: General Information
1. General informatio 1.1 Product overview and features KE-3K3LSUF-24H is a new solar storage inverter, which integrates solar energy storage & mains charging energy storage and AC sine wave output. Thanks to DSP control and advanced control algorithm, it has high response speed, high reliability and high industrial standard. -
Page 5: Basic System Introduction
1.2 Basic system introduction The figure below shows the system application scenario of this product. A complete system consists of the following parts: 1. PV module: Convert light energy into DC power, and charge the battery through the solar storage inverter, or directly invert into AC power to drive the load. -
Page 6: Appearance
1.3 Appearance ① ⑨ AC input terminal Battery input terminal ② ⑩ AC output terminal ON/OFF rocker switch ③ ⑪ USB communication port PV input terminal ④ ⑫ RS485 communication port CAN communication port ⑤ ⑬ Dry contact port Touchscreen buttons ⑥... -
Page 7: Dimension Drawing
1.4 Dimension drawing Solar storage inverter V1.2... -
Page 8: Installation Instructions
2. Installation instructions 2.1 Installation precautions Please read this manual carefully prior to installation to familiarize yourself with the installation steps. Be very careful when installing the battery. Wear safety goggles when installing a lead-acid liquid battery. Once coming into contact with the battery acid, rinse with clean water timely. Do not place metal objects near the battery to prevent short-circuit of the battery. -
Page 9: Wiring Specifications And Circuit Breaker Selection
2.2 Wiring specifications and circuit breaker selectio Wiring and installation must comply with national and local electrical codes. Recommended PV array wiring specifications and circuit breaker selection: Since the output current of the PV array is affected by the type, connection method and illumination angle of the PV module, the minimum wire diameter of the PV array is calculated according to its short-circuit current;... - Page 10 Recommended AC output wiring specifications and circuit breaker selection Maximum Recommended air Recommended AC Rated inverter AC Models bypass output switch or circuit output wiring diamete output current curren breaker type KE-3K3LS /10AWG 15.2A 2P—40A UF-24H Note: The wiring diameter is for reference only. If the distance between the PV array and the solar storage inverter or the distance between the solar storage inverter and the battery is relatively long, using a thicker wire can reduce the voltage drop to improve system performance.
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Page 11: Installation And Wiring
2.3 Installation and wiring Installation steps:： Step 1: Determine the installation position and the space for heat dissipation. Determine the installation position of the solar storage inverter, such as wall surface; when installing the solar storage inverter, ensure that there is enough air flowing through the heat sink, and space of at least 200m to the left and right air outlets of the inverter shall be left to ensure natural convection heat dissipation. - Page 12 Step 2: Remove the terminal cover Step3: Wiring AC input / output wiring method: ① Prior to AC input/output wiring, disconnect the external circuit breaker and confirm that the wire used is thick enough. Please refer to Section 2.2 “Wiring Specifications and Circuit Breaker Selection”;...
- Page 13 ：Ground L：Live N：Neutral ③ Properly connect the AC output wire according to the wire sequence and terminal position shown in the figure below. Please connect the ground wire first, and then the live wire and the neutral wire. The ground wire is connected to the grounding screw hole on the cabinet through the O-type terminal.
- Page 14 PV input wiring method: ① Prior to wiring, disconnect the external circuit breaker and confirm that the wire used is thick enough. Please refer to Section 2.2 “ Wiring Specifications and Circuit Breaker Selection”; ② Properly connect the PV input wire according to the wire sequence and terminal position shown in the figure below.
- Page 15 BAT+: Battery positive BAT-: Battery negative Warnings: ① Mains input, AC output and PV array will generate high voltage. So, before wiring, be sure to disconnect the circuit breaker or fuse; ② Be very careful during wiring; do not close the circuit breaker or fuse during wiring, and ensure that the “+”...
- Page 16 Step 5: Install the terminal cover. Step 6: Turn on the solar storage inverter First, close the circuit breaker at the battery terminal, and then turn the rocker switch on the left side of the machine to the "ON" state. The "AC/INV" indicator flashing indicates that the inverter is working normally.
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Page 17: Operating Modes
3. Operating modes 3.1 Charging mode 1) PV priority: PV module will charge the battery preferentially, and the battery is charged by the Mains only when the PV system fails. During the day, solar energy is fully used to charge, while at night, it converts to the Mains. -
Page 18: Output Mode
3.2 Output mode PV priority mode: Use PV and battery energy to power loads, with PV taking priority. When the PV energy is greater than the load, the excess energy charges the battery: When the PV energy is less than the load, the battery replenish the power supply. When PV is invalid, switch to mains power supply and charging. - Page 19 Mains priority mode: Switch to inverter power supply only when there is no utility power, and switch to utility power charging and supply when utility power recovery. The equipment is as a backup UPS, used in areas with unstable power grid. Switching does not affect the PV charging. Inverter priority mode: ...
- Page 20 With BMS communication: when the battery SOC is lower than the [61] setting item, switch to utility power supply and charging; when the battery SOC is higher than the [62] setting item, switch to PV, battery to power the load. Battery SOC higher than setting point Battery...
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Page 21: Lcd Screen Operating Instructions
4. LCD screen operating instructions 4.1 Operation and display panel The operation and display panel is as shown below, including 1 LCD screen, 3 indicators and 4 operation buttons. Operation buttons introduction Function buttons Description Enter/Exit Settings menu Previous choice DOWN Next choice Confirm/Enter Options under the settings menu,... - Page 22 LCD screen introduction Icons Functions Icons Functions Indicates that the AC input terminal Indicates that the inverter circuit has been connected to the grid is working Indicates that the AC input mode in Indicates that the machine is in APL mode (wide voltage range) the Mains Bypass mode Indicates that the PV input terminal Indicates that the AC output is in...
- Page 23 Indicates that the current battery Indicates that the machine has an type of the machine is a lead-acid alarm battery Indicates that the battery is in Indicates that the machine is in a charging state fault condition Indicates that the AC/PV charging Indicates that the machine is in circuit is working setup mode...
- Page 24 Real-time data viewing method On the LCD main screen, press the “UP” and “DOWN” buttons to scroll through the real-time data of the machine. Parameters Parameters on the left side of the Parameters on the right side Page in the middle screen of the screen of the screen...
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Page 25: Setup Parameters Description
4.2 Setup parameters description Buttons operation instructions: Press the “ SET ” button to enter the setup menu and exit the setup menu. After entering the setup menu, the parameter number [00] will flash. At this point, press the “ UP” and “ DOWN ” buttons to select the code of parameter item to be set. Then, press the “ENT”... - Page 26 Parameter Parameter Settings Description name When the parameter [01] =SOL/SBU, the battery voltage is higher than the set value, and Utility to Battery [05]28V default the output is switched from the mains to the Power inverter. Setting range: 24V~32V. Cannot be lower than the value of [04] &...
- Page 27 Parameter Parameter Settings Description name Lithium iron phosphate battery LF07/LF08/LF09, corresponding to 7 strings ,8 strings and 9 strings of lithium iron phosphate [08] battery; for 7 strings, default constant-voltage LF07/LF08/LF09 charge voltage is 24.8V; for 8 strings, default constant-voltage charge voltage is 28.4V; for 9 strings, default constant-voltage charge voltage is 31.8V;...
- Page 28 Parameter Parameter Settings Description name Battery undervoltage alarm point; when the battery voltage is lower than the point, an Battery under undervoltage alarm is given, and the output is [14] 22V default voltage alarm not turned off; the setting range is 20V~28V, with a step of 0.2V.
- Page 29 Parameter Parameter Settings Description name [22] DIS default Power saving mode disabled. After the power saving mode is enabled, if the Power saving load is null or less than 50W, the inverter output mode [22] ENA is turned off after a delay for a certain period of time.
- Page 30 Parameter Parameter Settings Description name S series models, maximum AC charging current [28] 80A default Max. AC setting range: 0~80A. charging U series models, maximum AC charging current current [28] 40A default setting range: 0~40A. [29] DIS default Disabled this function. Split Phase Supply for industrial frequency transformer [29] ENA...
- Page 31 Parameter Parameter Settings Description name Battery When the battery voltage is under voltage, the undervoltage [35] 26V default battery voltage needs to recover more than this recovery point set value before the inverter starts the output. PV maximum Maximum solar charging current setting: charging [36] 80A default 0~80A.
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Page 32: Battery Type Parameters
4.3 Battery type parameters For Lead-acid Battery : Battery type Sealed lead Flooded lead Gel lead-acid User- acid battery acid battery Adjustable battery(GEL) defined(User) Parameters (FLD) (SLD) Overvoltage disconnection voltage Battery fully charged recovery point(setup 18～30V √ item [37]) Equalizing charge 29.2V 29.6V 18～30V... - Page 33 For Lithium Battery : Battery type Ternary Ternary LFP(LF07) LFP(LF08) LFP(LF09) Adjustable (N07) (N08) Parameters Overvoltage 31.6V 33.0V disconnection voltage Battery fully charged recovery point(setup 27.4V 30.4V 23.2V 26.8V 29.8V √ item [37]) Equalizing charge voltage Boost charge voltage 28.8V 31.6V 24.6V 28.4V...
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Page 34: Other Functions
5. Other functions 5.1 Dry contact Working principle: This dry node can control the ON/OFF of the diesel generator to charge the battery. ① Normally, the terminals are that the NC-N point is closed and the NO-N point is open; ② When the battery voltage reaches the low voltage disconnection point, the relay coil is energized, and the terminals turn to that the NO-N point is closed while NC-N point is open. -
Page 35: Protection
6. Protection 6.1 Protections provided Protections Description PV current/power When charging current or power of the PV array configured exceeds limiting protection the PV rated, it will charge at the rated. At night, the battery is preflooded from discharging through the PV PV night reverse- module because the battery voltage is greater than the voltage of PV current protection... - Page 36 PV reverse polarity When the PV polarity is reversed, the machine will not be damaged. protection AC reverse Prevent battery inverter AC current from being reversely input to protection Bypass. Bypass over Built-in AC input overcurrent protection circuit breaker. current protection When the discharge output current of the battery is greater than the Battery input over maximum value and lasts for 1 minute, the AC input would switched...
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Page 37: Fault Code Meaning
6.2 Fault code meaning Whether it Fault Fault name affects the Description code output or not BatVoltLow Battery undervoltage alarm 【01】 Battery discharge average current BatOverCurrSw 【02】 overcurrent software protection BatOpen Battery not-connected alarm 【03】 BatLowEod Battery undervoltage stop discharge alarm 【04】... - Page 38 FanFail Fan failure 【21】 EEPROM Memory failure 【22】 ModelNumErr Model setting error 【23】 【24】 【25】 Inverted AC output backfills to bypass AC RlyShort 【26】 input 【27】 【28】 BusShort Internal battery boost circuit failure 【29】 Battery capacity below 10% alarm (valid BatCapacityLow1 【30】...
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Page 39: Handling Measures For Part Of Faults
6.3 Handling measures for part of faults Fault Faults Handling measures code Check if the battery air switch or the PV air switch has been closed; if the switch is in the "ON" state; press Display No display on the screen any button on the screen to exit the screen sleep mode. -
Page 40: System Maintenance
7. System maintenance In order to maintain the best long-term performance, it is recommended to conduct following checks twice a year. Make sure that the airflow around the unit is not blocked and remove any dirt or debris from the heat sink. -
Page 41: Technical Parameters
8. Technical parameter Models KE-3K3LSUF-24H AC mode Rated input voltage 220/230Vac (170Vac~280Vac) ±2% Input voltage range (90Vac-280Vac) ±2 Frequency 50Hz/ 60Hz (Auto detection) 47±0.3Hz ~ 55±0.3Hz (50Hz); Frequency Range 57±0.3Hz ~ 65±0.3Hz (60Hz) Overload/short-circuit protection Circuit breaker Efficiency >95% Conversion time (bypass and 10ms (typical) inverter) AC reverse protection... - Page 42 overvoltage alarm / overvoltage recovery...LCD screen can be set) Power saving mode Load ≤50W AC charging Battery type Lead acid or lithium battery Maximum charge current(can be 0-80A set) Charge current error ± 5Adc Charge voltage range 20 –33Vdc Short circuit protection Circuit breaker and blown fuse Circuit breaker specifications Overcharge protection...
- Page 43 Communication interface USB/CAN/RS485(WiFi/GPRS)/Dry contact Size (L*W*D) 378mm*280mm*103mm Weight (kg) Solar storage inverter V1.2...
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