Dual Pulse Isolation Relay

RPR-22PS

The SSI RPR-22PS is a dual-channel pulse isolation relay that incorporates two independent signal isolation relays in a single compact package. It provides two isolated solid state Form C (KYZ) outputs from two Form A or C inputs, with each channel supplying its own sense voltage to the connected pulse sending unit.

Designed for utility metering and energy management environments, the RPR-22PS filters noise and transients on each input to prevent false pulses at either output. Its two-channel design makes it particularly well suited for applications requiring simultaneous isolation of both KWh and KVARh pulse signals from a single meter.

The RPR-22PS Dual Pulse Isolation Relay on a white background.

Product Highlights

The RPR-22PS offers flexible output timing configuration that sets it apart from single-channel relays. Each channel can be independently set to long mode — where the output mirrors the input pulse directly — or short mode, which generates a fixed 100ms output pulse. Short mode is especially useful when working with Form A end-of-interval or timing pulse inputs, giving installers greater control over how pulse signals are conditioned and delivered downstream.

Protection and ease of use are built in throughout. Solid state switching devices rated at 800V and 750mA, combined with built-in transient suppression, guard each channel against lightning and voltage spikes without requiring external protection components. Fused “K” output leads, LED status indicators, and a “Euro” type terminal strip round out a design that is straightforward to install and monitor in any metering or SCADA application.

Features

The RPR-22PS brings two fully independent isolation channels together in one unit, purpose-built for dual-signal metering applications:
  • Two independent isolated solid state Form C (KYZ) outputs from two Form A or C inputs
  • Self-supplied sense voltage on each input channel
  • Selectable long or short output pulse timing per channel
  • Input noise and transient filtering to eliminate false pulses
  • Solid state switch rated at 800V / 750mA with built-in transient protection
  • Fused "K" output leads (½ amp, 3AG) on each channel
  • 2,500Vrms input/output isolation voltage
  • Red and green LED status indicators
  • Available in 24 VAC/VDC and 125 VDC input voltage options
The RPR-22PS Dual Pulse Isolation Relay

Dual-Channel Independent Pulse Isolation

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