nJoy 800VA / 480W Uninterruptible Power Supply (UPS) Specifications

This document outlines the typical electrical and physical characteristics for a compact nJoy 800VA UPS, suitable for home office equipment, single PCs, and networking devices (modems, routers).

1. Power and Performance

Parameter	Specification	Notes
VA Rating	$800\text{VA}$	Apparent Power
Watt Rating	$480\text{W}$	True Power (Assumes $\text{PF}=0.6$)
UPS Topology	Line-Interactive	Provides voltage regulation and battery backup.
Waveform (Battery Mode)	Simulated Sine Wave	Stepped approximation of sine wave; suitable for most standard PC power supplies.
Transfer Time	$2-6\text{ ms}$ (Typical)	Time to switch from utility power to battery power.
Overload Protection	Yes	Shutdown protection against excessive load.

2. Input Specifications

Parameter	Specification
Nominal Input Voltage	$220\text{V}/230\text{V}/240\text{V}\text{ AC}$
Input Voltage Range	$162-290\text{V}\text{ AC}$
Nominal Input Frequency	$50\text{Hz}/60\text{Hz}$ (Auto-sensing)
Input Connection	Standard $\text{AC}$ Power Cord (Schuko or relevant regional plug)

3. Output Specifications

Parameter	Specification
Nominal Output Voltage	$230\text{V}\text{ AC}$
Output Voltage Regulation	$\pm 10\%$ on battery
Output Sockets	$2-4$ Universal Sockets or $\text{IEC C}13$ (Typical)
Automatic Voltage Regulation ($\text{AVR}$)	Built-in boost and buck $\text{AVR}$ to stabilize voltage.

4. Battery and Runtime

Parameter	Specification (Typical)
DC Voltage	$12\text{V}\text{ DC}$
Battery Type	$1\times 12\text{V}/7\text{Ah}$ Sealed Lead-Acid (Internal, non-user replaceable)
Typical Runtime ($\text{Half Load}$)	$8-12\text{ minutes}$
Typical Runtime ($\text{Full Load}$)	$1-3\text{ minutes}$
Recharge Time	$4-6$ hours to $90\%$ capacity

5. Physical and Environmental

Parameter	Specification
Form Factor	Compact Mini-Tower
Display	LED Indicators or Small LCD (Shows status, voltage, and battery charge)
Dimensions ($\text{H}\times \text{W}\times \text{D}$)	$\approx 200\times 100\times 300\text{ mm}$ (Varies)
Weight	$\approx 4-6\text{ kg}$
Noise Level	$<40\text{ dBA}$ (Silent operation under normal conditions)

6. Communication and Protection