1. Introduction
Thank you for choosing the Microtek Smart Hybrid 875 Digital & Sine Wave Inverter. This manual provides essential information for the safe and efficient operation of your inverter. Please read it thoroughly before installation and use, and retain it for future reference.
This inverter is designed to provide reliable power backup for your home, office, or shop, featuring advanced digital and pure sine wave technology for stable and clean power output.
2. Important Safety Instructions
WARNING: Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Read all instructions before operating the inverter.
- Do not expose the inverter to rain or moisture.
- Ensure proper ventilation around the inverter to prevent overheating.
- Do not open the inverter casing. Refer all servicing to qualified personnel.
- Connect the inverter only to a compatible 12V battery system.
- Ensure all connections are secure and correctly polarized.
- Keep children away from the inverter and battery.
- Do not connect non-rechargeable batteries to the inverter.
- In case of smoke or unusual odors, immediately disconnect power and contact customer support.
3. Product Overview
The Microtek Smart Hybrid 875 Inverter combines digital control with pure sine wave output, ensuring stable power for sensitive electronics. It features an intelligent battery management system and multiple protection features.
3.1 Front Panel
Figure 1: Front Panel of the Inverter
- LED Indicators: Mains On, UPS On, Charging, Overload, Batt. Low, CB Trip.
- Power Button: To turn the inverter ON/OFF.
- Model Number: 875-12V.
3.2 Rear Panel
Figure 2: Rear Panel Connections
- AC Output Socket: For connecting appliances.
- AC Input Cord: For connecting to mains power.
- Battery Terminals (+/-): For connecting to the 12V battery.
- Bypass Switch: Allows mains power to directly supply loads, bypassing the inverter.
- UPS/Normal Mode Switch: Selects between UPS mode (narrow voltage window for sensitive electronics) and Normal mode (wide voltage window for general appliances).
- Battery Type Selector: For selecting between Flat Plate, Tubular, or SMF battery types.
3.3 Key Features
Figure 3: Key Features of the Smart Hybrid Inverter
- In-built Bypass Switch: Enables isolation of the UPS from mains when needed.
- High & Standard Charging Option: For quick or regular battery charging.
- IBGM (Intelli Battery Gravity Management): Optimizes battery performance and lifespan.
- Unique Ultra Sonic Switching: For noiseless operation.
- UPS & Inverter Mode: Versatile operation for IT loads and home appliances.
- Compatible with All Battery Types: Supports Tubular, Local, and Flat Plate batteries.
4. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your inverter. If you are unsure about any step, consult a qualified electrician.
4.1 Site Selection
- Place the inverter in a cool, dry, and well-ventilated area.
- Avoid direct sunlight, heat sources, and moisture.
- Ensure sufficient clearance around the inverter for airflow.
- Mount the inverter on a stable, non-flammable surface.
4.2 Battery Connection
The inverter is compatible with a single 12V battery with a capacity between 100 Ah and 200 Ah.
- Ensure the inverter is OFF and disconnected from the mains supply.
- Connect the RED cable from the inverter to the POSITIVE (+) terminal of the battery.
- Connect the BLACK cable from the inverter to the NEGATIVE (-) terminal of the battery.
- Ensure connections are tight and secure to prevent sparking.
- Select the correct battery type (Flat Plate, Tubular, or SMF) using the switch on the rear panel.
4.3 Mains and Load Connection
- Plug the inverter's AC input cord into a grounded wall socket.
- Connect your appliances (loads) to the AC output socket on the rear panel of the inverter.
- Ensure the total load does not exceed the inverter's maximum capacity (760 watts).
5. Operating Instructions
5.1 Powering On/Off
- To turn ON: Press and hold the power button on the front panel for a few seconds until the "UPS On" indicator lights up.
- To turn OFF: Press and hold the power button again until all indicators turn off.
5.2 Operating Modes
Use the UPS/Normal mode switch on the rear panel to select the desired operating mode:
- UPS Mode: Provides a narrow input voltage window (e.g., 180V-260V AC) for sensitive electronic devices like computers, ensuring stable power.
- Normal Mode: Provides a wider input voltage window (e.g., 100V-290V AC) for general household appliances, allowing the inverter to operate on a broader range of mains voltage before switching to battery.
5.3 LED Indicators
| Indicator | Status | Description |
|---|---|---|
| Mains On | Green LED ON | Inverter is receiving power from the mains supply. |
| UPS On | Green LED ON | Inverter is supplying power from the battery (backup mode). |
| Charging | Red LED ON/Flashing | Battery is being charged. Flashing indicates fast charging. |
| Overload | Red LED ON/Blinking | Connected load exceeds inverter capacity. Remove some appliances. |
| Batt. Low | Red LED ON | Battery charge is low. Inverter will shut down soon to protect the battery. |
| CB Trip | Red LED ON | Circuit breaker has tripped due to short circuit or severe overload. Reset after checking connections. |
5.4 Product Video Overview
Video 1: Microtek Smart Hybrid 875 Digital Sine Wave Inverter Overview. This video demonstrates the physical appearance, front panel indicators, and rear panel connections of the inverter, highlighting its compact design and smart digital controls.
6. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your inverter and battery.
- Cleaning: Keep the inverter clean and free from dust. Use a dry cloth to wipe the exterior. Do not use liquid cleaners.
- Ventilation: Ensure ventilation openings are not blocked.
- Battery Care:
- Check battery water levels (for lead-acid batteries) regularly and top up with distilled water if necessary.
- Keep battery terminals clean and free from corrosion. Apply petroleum jelly if needed.
- Ensure the battery is fully charged periodically, especially if not used for extended periods.
- Connections: Periodically check all electrical connections for tightness.
7. Troubleshooting
This section addresses common issues you might encounter. If the problem persists, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning ON | Battery not connected or discharged; Power button not pressed correctly. | Check battery connections; Ensure battery is charged; Press and hold power button firmly. |
| No output in backup mode | Battery low; Overload; Inverter fault. | Check "Batt. Low" indicator; Reduce load; Contact service center. |
| Overload indicator ON | Too many appliances connected. | Disconnect some appliances to reduce the load. |
| Charging indicator not ON | Mains power not available; Loose mains connection; Battery fully charged. | Check mains supply; Secure mains plug; If battery is full, charging stops automatically. |
| CB Trip indicator ON | Short circuit or severe overload. | Disconnect all loads, check for short circuits, then reset the circuit breaker (usually a button on the rear). |
8. Technical Specifications
| Feature | Detail |
|---|---|
| Model Name | 875-12V |
| Type | Advanced Digital & Pure Sine Wave Inverter |
| VA Rating | 950VA/12V |
| Max. Peak Load | 760 Watts |
| Battery Compatibility | 1 x 12V Battery (100 Ah - 200 Ah), supports Flat Plate, Tubular, SMF |
| Display | Digital LED display for status |
| Item Dimensions (LxWxH) | 34.4 x 39 x 20.7 CM |
| Item Weight | 9.8 Kg |
| Manufacturer | Microtek International Pvt. Ltd. |
| Country of Origin | India |
9. Warranty and Customer Support
9.1 Warranty Information
This Microtek Smart Hybrid 875 Inverter comes with a 2-year warranty from the date of purchase. The warranty covers manufacturing defects under normal operating conditions. For detailed terms and conditions, please refer to the warranty card supplied with the product.
The warranty does not cover damages due to improper installation, misuse, unauthorized repairs, or natural disasters.
9.2 Customer Support
For any technical assistance, service requests, or warranty claims, please contact Microtek customer support:
- Contact Number: +91-7283838383
- Email: cc@microtek.in
- Manufacturer Address: H-57, Udyog Nagar, Rohtak Road, India
