РН1, РН2

10 kVA inverter with a 100 A mains ATS

Voltage relay with digital value display
РH1, РН2

Purpose:

The voltage relay monitors the parameters of an electrical circuit in real time and protects loads against impermissible supply voltage excursions.
The РН1 and РН2 voltage relays are used in protection and automation schemes for power systems, in supply-incomer equipment, and for protecting industrial and domestic equipment supplied from a single-phase DC or AC network.
The РН1.5, РН1.12, РН1.24 and РН1.48 voltage relays are used in renewable energy systems and in supply-incomer equipment, to protect DC-powered industrial and domestic equipment.

Distinctive features of the relay:

A compact unit combining the functions of an undervoltage relay, an overvoltage relay, two time relays and a digital voltmeter.
The RMS voltage is determined with high accuracy by measuring the voltage many times within each mains cycle and processing the results mathematically in real time.
Programmable values for the upper and lower voltage pickup thresholds.
Programmable hysteresis (reset ratio), set separately for the lower and upper pickup thresholds.
Programmable delay, set separately for relay pickup and reset (load off/on)
Digital display of the monitored voltage (on the РН1).
One normally open and one normally closed galvanically isolated contact.
Relay status shown on a bi-colour LED.
Limits and setpoints can be programmed using the buttons and the three-digit display on the РН1.
Fixed setpoints specified when ordering, for the РН2.
Needs no control supply (powered from the monitored network).
The relay is a universal design, operating across a wide range of monitored DC and AC voltages.
DIN-rail mounting, modern European styling.
The РН1 and РН2 voltage relays can replace a wide range of voltage relays made by various manufacturers: НЛ-4; НЛ-5; НЛ-6; НЛ-6А; НЛ-7; НЛ-8; НЛ-9; НЛ-18-1; НЛ-18-2; НЛ-19; РН53, РН54, РН153, РН154, РСН12, РСН14, РСН15, РСН16, РСН17, РСН14М, РСН15М, РСН16М, РСН17М; РСН50; РН101; РН111; РН112; РКН-1.