Web-manual ZUBR SR1

Purpose

‍Why do professionals choose ZUBR? ‍The device measures voltage with high accuracy using the TrueRMS algorithm, which significantly improves the accuracy of voltage measurement in the event of interference in the network in cases where the voltage waveform differs from the sine wave.

‍The body of the device is made of non-combustible polycarbonate, which is the best type of plastic for fire protection requirements. For additional protection against overheating in case of poor contact between the relay and the connected device, there is a temperature sensor inside.

‍Thermal protection. The relay will detect overheating inside the enclosure and turn off the load. For example, if the permissible power is exceeded.

‍Recording the emergency voltage value. You can see if the voltage went beyond the set limits while you were away.

‍Locking the buttons. This is convenient if the relay is located within the access area of small children.

‍Switch-on delay. For household appliances that are sensitive to the time of power outage (e.g. refrigerator), set the delay time to 2-3 min. This will increase the compressor's service life.

‍Adjust the screen brightness.

‍The durability and reliability of the power relay contacts is ensured by switching on the load as soon as possible to the moment when the voltage sine wave passes through zero. Small deviations from the zero crossing are possible due to the different tripping times of different models of power relays.

‍Read this document till the end using the device. This will help to avoid possible hazards, errors, and misunderstandings.

Technical data

The number of operating  cycles under load

100 000 cycles

not less 10 000 cycles

The number of operating  cycles without load

1 000 000 cycles

not less 500 000 cycles

Relay type

electro-
magnetic

polarized

Current measurement  accuracy

0,5–63 А ±0,1–0,3 А

Voltage limits

upper 230–280 V,
lower 100–210 V

Switch-off time when
overvoltage occurs

not more than 0,03 sec

Switch-off time when
undervoltage occurs

0,1–10 c | ≥ 100 V |
not more than 0,03 с | < 100 V |

Supply voltage

100–420 V

Power consumption

not more than 0,35 kWt / month

Connection

wire cross section not more than 16 mm²

Device weight

0,19 kg ±10%

Overall dimensions

36 х 85 х 66 mm (w х h х d)

IP to GOST 14254

IP20

Installation

‍The appliance is intended for installation inside residences. The risk of moisture or humidity in the installation site should be minimal. The ambient temperature during operation and installation should be within the range of –5...+45 °C.

‍To protect against short circuits and overcurrents, a circuit breaker (CB) with a rating of no more than 16 A must be installed in the switchboard.

‍To protect against overvoltage caused by lightning strikes, surge arresters must be used together with the device. They are installed at the entrance to the building in accordance with their instructions.

‍To protect people from electric leakage current, an RCD (residual current device) is installed in the electrical switchboard.

‍The cross-section of the wires to which the device is connected must match the value of the electric current consumed by the load.

Exploitation

‍When connected and during operation, the thermostat displays the current temperature of the remote sensor. If it is lower than the set temperature, the load is energized. In this case, the indicator lights up red.

‍Use "+" or "–" buttons to change the heating temperature. First, the screen displays the operating mode, then the set temperature of this mode.

If you want to securely protect the settings from children or unauthorized access, press and hold the "+" and "–" simultaneously for 6 seconds until "Loc" appears on the screen, or in case of unlocking, "unLoc" will appear.

Menu button "≡"

Press "≡" to select a menu item.

Use "+" or "–" buttons. to change the parameters. The first press on "+" or "–" causes the parameter to blink, the next press — to change. In 5 seconds after the last press, the display returns to the mains voltage indication.