Novatek EM-129, Operating Manual, Page: 3 / 16

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NOVATEK-ELECTRO EM-129
This Operation Manual is intended to get familiarized with the device, safety requirements, operation procedure
and maintenance of the WI-FI electric power meter with the protection and control functions (hereinafter referred to
as “device”, “EM-129”).
1. PURPOSE
1.1. Purpose of the device
Meter EM-129 is a microprocessor device to be connected to Wi-Fi and designed for non-commercial electric
power metering.
Meter EM-129 allows you to turn on / off electrical equipment (refrigerator, air conditioner, washing machine,
television set, video and audio equipment, etc.) according to a schedule or in the manual mode, while protecting it
from various accidents in voltage, frequency and overload power.
Meter EM-129 stores in the internal memory a log of its work for the last month and energy consumption data.
Meter EM-129 has protection against overheating and it disconnects the load if the temperature inside the device
body exceeds 80 ºС (due to exceeding the rated load current, poor contact due to poor clamping of the terminal
block screws, etc.).
Meter EM-129 is equipped with one control button (for entering Wi-Fi setup mode or manual load control) and a
two-color indicator (for displaying alarms, load status and Wi-Fi network connection status).
When connecting meter EM-
129 to the “my.overvis.com” service, it is possible to control EM-129 from anywhere
in the world where there is the Internet connectivity.
One can save energy and money by using meter EM-129 to control heating or ventilation appliances according
to a pre-planned schedule.
Key features:

Accounting for electric power consumed by the load;

Measurement of voltage and frequency in the mains;

Measurement of current consumed by the load;

Measurement of power consumed by the load;

Load protection against emergency voltage in the mains;

Load protection against excess current consumption;

Load protection against excess power consumption;

Protection against internal elements overheating;

Real-time clock with a power reserve of up to 5 days (if power supply fails);

Automatic time synchronization with the exact time server (NTP);

Automatic load control according to the schedule set by the user;

Limitation of load operation time;

Manual load control from the front panel;

Manual control locking after a set period of time.
1.2. Controls, overall and installation dimensions of meter EM-129
Controls, overall and mounting dimensions of
ЕМ-129
are shown in Fig. 1.
1 - Terminals for connection to the mains
(L and N);
2 - Status condition indicator (two-color:
red / blue);
3 -
“Wi-Fi” control button;
4 - Load connection terminals (L
’ and N’).
Fig. 1
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Controls, overall and
installation dimensions of EM-129