WARNING!
Do not plug two or more meters together!
IMPORTANT
Don't plug in an appliance where the load
exceeds 16 Amp. Always ensure the plug of any appliance is fully
inserted into the meter outlet. If cleaning of the meter is required,
remove from mains power and wipe meter with a dry cloth.
KEYBOARD DEFINITION
1). SET: Set price with button UP.
2). MODE: Exchange display state.
3). UP: Set price combined with button SET.
GENERAL FEATURES
1).Display line power.
2).Display and memory accumulative total power quantity.
3).Display and memory total power charge of price.
THE DATA DISPLAY
Press MODE button the data displays as follows:
W →KWh →PRICE →COST/KWH
↑_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _↓
1). Plug in socket and power on, the meter will display real power.
2). Press MODE button once again and release, the meter will display accumulative KWh.
3). Press MODE button once again and release, the meter will display total power charge.
4). Press MODE button once again and release, the meter will display COST/KWH.
SETTING PRICE OF COST/KWH
1). Press SET button during display COST/KWH,the first digital COST/KWH flash, press UP button to set it.
2). Press SET button once again and release, the second digital COST/KWH flash, press UP button to set it.
3). Press SET button once again and release, the third COST/KWH flash, press UP button to set it.
4). Press SET button once again and release, the fourth COST/KWH flash, press UP button to set it.
5). Press SET button once again and release, the radix point COST/KWH flash, press UP button to set it.
DATA CLEAR
Press and hold MODE button for 5 seconds will clear KWH,PRICE and COST/KWH data.
Power Backlit, Backlit socket, power meter Backlit, energy meter Backlit, backlit adaptor, backlit plug socket NINGBO COWELL ELECTRONICS & TECHNOLOGY CO., LTD , https://www.cowellsocket.com
Where is the difficulty of inverter home appliance testing?
With the increasing requirements of relevant standards and a deeper understanding of energy efficiency concepts, the testing procedures for household appliances such as refrigerators, air conditioners, washing machines, and induction cookers have become more stringent. This article focuses on the challenges and solutions in testing equipment related to inverter air conditioners and induction cookers.
**First, the relationship between home energy efficiency labels and standby power consumption tests**
Household appliances have become an essential part of daily life, offering convenience and comfort. In recent years, consumers have become increasingly concerned about the energy consumption of these products. With various energy efficiency labels available, it's important to understand which appliances are more energy-efficient and environmentally friendly.
China introduced energy efficiency labels as early as March 1, 2005, initially covering only refrigerators and air conditioners. Over time, other appliances such as washing machines, electric water heaters, induction cookers, rice cookers, tablets, and microwave ovens were also included. The energy efficiency standards have evolved over time, with higher requirements for efficiency levels, resulting in the current five-tier labeling system.
**What is the energy efficiency label? Is it safe to choose an appliance based on the label?**
The energy efficiency label is an information tag attached to energy-consuming products, indicating their energy efficiency rating. It helps consumers make informed decisions when purchasing appliances. The label ranges from Level 1 (most efficient) to Level 5 (minimum requirement).
Level 1 indicates the product has reached international advanced standards, with an energy efficiency ratio of 3.40 or higher. Level 2 is slightly less efficient, with a ratio between 3.20 and 3.39. Level 3 represents the average market level, while Levels 4 and 5 indicate lower efficiency, with Level 5 being the minimum allowed standard.
The energy efficiency ratio refers to the cooling capacity divided by the input power. Higher ratios mean greater energy savings and lower power consumption per unit time.
In testing, accurate measurement of the input power is crucial. High-precision power meters, such as Zhiyuan Electronics' PA310, offer a basic power accuracy of 0.1%, support three-phase AC testing, and can handle high sampling rates and harmonic analysis, making them ideal for modern inverter appliances.
**Second, testing programs for inverter air conditioners and other variable frequency appliances**
As more appliances use inverter technology, the challenge lies in accurately measuring distorted waveforms caused by frequency conversion. These signals often contain high-frequency harmonics that standard power meters cannot capture effectively.
Zhiyuan Electronics’ PA300 series Power Meter addresses these issues with a sampling rate of up to 500KS/s, a bandwidth of 300KHz, and support for harmonic analysis up to 50 times. Its ability to automatically switch ranges and measure currents from 50μA to 20A ensures accurate readings even under fluctuating conditions.
**Third, measurement solutions for large current devices such as induction cookers**
Induction cookers require precise measurement of large currents due to their high power consumption. Traditional methods often involve current sensors, which can introduce inaccuracies. The PA310 power meter allows direct input of currents up to 20A without additional devices, using dual shunt technology to ensure high accuracy across a wide range of current values.
With a power measurement accuracy of 0.1%, the PA310 provides reliable results for both small and large current measurements. It supports up to 50 harmonic analyses and includes software for monitoring and recording all test data, making it an ideal choice for testing high-current appliances like induction cookers.
Overall, advancements in testing equipment have made it easier to evaluate the performance of modern household appliances, ensuring they meet energy efficiency standards and provide accurate, reliable measurements for both manufacturers and consumers.