Be sure to come a time when even the most high-quality and reliable Electric fails. It is very good if it just goes down, but it may happen that the unit of electricity accounting will work properly, resulting in inflated readings of electricity, respectively, to the unnecessary expense of personal funds. But knowing a simple algorithm, one can always check Electric yourself.
When there is a need for testing
A few simple indicators can become alarms that electricity metering device began to work properly. These include:
- Large power consumption when operating in normal mode. It seems to include one and the same appliances at the same time, but wrapping occurs several times more than usual.
- Standard flow rate with less work devices. Reduce power consumption effectively, but the counter shows the previous figures.
- Very high success rate with minimal actual operation of appliances. For example, only works a vacuum cleaner and a television, and the counter produces 400 kW per month.
If such a situation began to appear more often, you need to pay attention to the correct operation of the electricity metering device, to be exact - check it out yourself.
Where should you start?
The main step - validation Electric connection to the network. A great many problems arise because of tangled wires and carelessness when connecting the device.
Modern counters are marked accordingly on the case, making it easy to connect to the network. For the sake of simplicity, you can use the following schemes:
If connected properly, the wire must be returned to their original position. It is important not to disturb the integrity of seals, which will lead to very big problems with the supervisory authorities of the power consumption.
Check the counter operation when disconnected appliances
A very big problem with older models of electricity metering devices was residual inductance Some household appliances, which made the drive to rotate in the counter, even if the apartment was completely de-energized. Minimum flow is still present, which later evolved into a very tangible figures.
If when the main circuit breaker electric meter continues to run, it will be a key indicator of its malfunction.
Checking accounting error
Which consists of the following algorithm:
1. Measure the voltage in the network using a standard multimeter translated to the "AC voltage measurement."
2. Connect the ordinary incandescent lamp to the network and to measure its power consumption. You can use the same meter, placing it in the ammeter mode. For further work is necessary to know the power consumed by the lamp, according to the formula: P = U * I.
3. Connect the lamp and fix the time in which the counter will flash 10 times.
4. Lamp power multiplied by the number of turns spent for test time, then a permanent counter and divide by the number of seconds in an hour.
If this figure is higher accuracy class, the accounting device malfunction is unambiguous, and the meter needs to be replaced. The whole problem of the variety of measurements is the need to purchase a multimeter. But this product is not yet time to help house master in solving everyday problems.