СР21, СР22, СР23

They allow the load to be switched on and off under independent programmes on two channels: СР21 — over 24 hours; СР22 — over a week; СР23 — over a year, with automatic correction for sunrise and sunset times and automatic summer/winter time changeover.

Datasheet for the СР21, СР22 and СР23 time switches

Programming instructions for the СР21 24-hour time switch

Programming instructions for the СР22 weekly time switch

Programming instructions for the СР23 annual time switch

Reprogramming instructions for the СР23 annual time switch

СР21, СР22 and СР23 daily, weekly and annual time switches

Purpose:

The 24-hour time switch controls electrical equipment, switching the load on and off automatically at the required times on a daily cycle.
The weekly time switch turns the load on and off automatically at the required times, taking the day of the week into account, on a 7-day cycle.
The annual time switch is designed to control lighting. It corrects the switch-on and switch-off times automatically, according to values set by the manufacturer.

The automatic correction is applied daily, using the switch-on and switch-off times stored in the relay's memory.
The switch-on and switch-off times may be set:
- according to sunrise and sunset times for the longitude and latitude of the town where the relay is to be used;
- according to the schedule approved by Resolution No. 1030 of the National Electricity Regulatory Commission of Ukraine of 22.10.2004;
- to the customer's own schedule.