EKS2T series products belong to PC grade (three-sectional) automatic conversion switchgear (hereinafter referred to as switches), mainly used for the power supply systems with AC 50Hz/60Hz, rated voltage of 400V and rated working current of 16A to 630A to do switchover between the power supplies in case an abnormalit happens with one of them so as to ensure the reliability and safety of its power supply.

This switch holds the positions of "common (I) switch-in" "standby (II) switch-in" and "disconnection (0)" and can be used for fire linkage and the power supply system of infrequent on-off. Mainly applicable for such important places as hospitals, shopping malls, banks, chemical, metallurgical, high buildings, military facilities and firefighting where power cutout is not allowed.

The product complies with the GB/T 14048.11 standard <<Low voltage switchgear and control equipment - Part 6-1:Multifunctional electrical switching devices>>.

Normal working conditions

* The surrounding air temperature: -5°C~+40°C and the average temperature value over 24 hours not exceeded by +35°C;
* Atmospheric humidity: when the maximum temperature is +40°C, the relative humidity does not exceed 50% and the maximum monthly relative humidity is 90%. Higher relative humidity is allowed at lower temperatures. Special measures should be taken for occasional condensation caused by temperature changes;
* Installation height: The altitude of the installation location shall not exceed 2000 meters;
* Pollution level: The environmental pollution level at the installation site is level 3;
* Usage category: AC-33iB;
* Electromagnetic environment: Suitable for environment A. Using this product in environment B will cause harmful electromagnetic interference to the product. If used in this environment, users need to take appropriate protective measures.

Introduction of structure

Common power supply I at incoming end
Common power supply II at incoming end
Load connection terminal
Mechanical indication
Manual operation rotating wheel
Product information
Manual/automatic toggle switch
Switch status indicator
Split interface

Note: Model specifications headers are printed as RDS2T-125 / RDS2T-250 / RDS2T-630 in this series section of the PDF.

Functional parameters

Definition of terminal

Basic type/type A controller

101: Common zero-line
102: Common power supply
103: Common switch-in
201: Backup zero-line
202: Backup power supply
203: Backup switch-in

Type B controller

101: Common zero-line
102: Common power supply
103: Common switch-in
201: Backup zero-line
202: Backup power supply
203: Backup switch-in
401: Firefighting passive input
402: Firefighting passive input
403: Firefighting passive output
404: Firefighting passive output
501: N.O. end of generator
502: Common end of generator
503: N.C. end of generator

Type C controller

101: Common zero-line
102: Common power supply
103: Common switch-in
201: Backup zero-line
202: Backup power supply
203: Backup switch-in
301: DC24V+
302: DC24V-
401: Firefighting passive input
402: Firefighting passive input
403: Firefighting passive output
404: Firefighting passive output
501: N.O. end of generator
502: Common end of generator
503: N.C. end of generator

Type D/Type E controller

101: Common zero-line
102: Common power supply
103: Common switch-in
201: Backup zero-line
202: Backup power supply
203: Backup switch-in
301: DC24V+
302: DC24V-
401: Firefighting passive input
402: Firefighting passive input
403: Firefighting passive output
404: Firefighting passive output
501: N.O. end of generator
502: Common end of generator
503: N.C. end of generator
601: RS485 A+
602: RS485 B-
603: RS485 GND

Process of action

Note:
(1) at the power grid-power grid status, power grid 1 connected to power supply I, power grid 2 to power supply II.
(2) at the power grid-generator status, the power grid connected to power supply I, the generator to power supply II.