Universal electronic voltage relay PH-112 is designed to monitor the permissible voltage levels and presence of voltage with nominal parameters of 100 V, 50 Hz, as well as to control electrical processes in protection and automation devices for electrical installations with voltages above 1000 V.

Key features of PH-112 relay:

Three operating modes:

• Minimum voltage relay mode: Triggers only when the minimum voltage threshold is reached.
• Maximum voltage relay mode: Triggers only when the maximum voltage threshold is reached.
• Symmetrical settings mode: Triggers when both thresholds (minimum and maximum) are reached.
• Indicators on the front panel:

LED indicators show:

• The presence of voltage in the network
• The load status (on/off)

Settings:

• Mode switch for the relay operation
• Voltage trigger threshold adjustment (as a percentage of the nominal value)
• Setting the delay time for triggering the relay when the voltage thresholds are reached
• This relay ensures reliable voltage control in electrical networks and can be used in various industrial and household devices to protect against unacceptable voltage fluctuations