Automatic Transfer Switch DNQ8 Dual Power (Isolated PC Level)

Automatic transfer switch DNQ8

Isolation automatic transfer switches (ATS) are used to physically separate two sources of power, such as a generator and the utility grid. ATSs at the PC level is typically employed in data center and server applications where data centers often have multiple power sources, including the utility grid, generators, and UPSs.

Automatic Transfer Switch Product Overview

The control section of the DNQ8 switch is composed of a metal casing, while the switch itself is made of glass fiber unsaturated polyester resin. This gives the switch superb dielectric performance, as well as dependable protection and safety features.

DNQ8 is also aesthetically pleasing, with a solid structure and compact form factor. It is the ideal choice for a variety of applications.

Application of Automatic Transfer Switch

The DNQ8 series automatic transfer switch is an important device for powering various systems and equipment. It is mainly used for distributing AC power at 50Hz, with a rated voltage of 400V and a DC rated voltage of 220V. It also has a rated current of 16 to 3200A.

Additionally, the DNQ8 series automatic transfer switch can be used for the switching system of one main and one standby power supply, or mutual standby power supply in a motor network. Furthermore, it can be used for infrequent isolation from breaking circuits and lines. In sum, the DNQ8 series automatic transfer switch is versatile and indispensable

Example of Model Selection

The automatic transfer switch, with the agreed heating current of 125 amps, the AC rated voltage of 400 volts, the rated current of 50 amps, 4 poles (3 poles + interruptible neutral pole), is suitable for the automatic switching and automatic recovery of the power supply system of municipal power and oil engine.

Meet The Standard

DNQ8 series automatic transfer switch symbols the following standards:

International Standard

• IEC60947-1 low voltage switchgear and controlgear part I General
• IEC60947-3 low voltage switchgear and control equipment, switches, isolators, disconnectors and fuse combinations
• IEC60947-6 low voltage switchgear and control equipment multi function switch automatic transfer switching apparatus

National Standard

• GB/T14048.1 general rules for low voltage switchgear and controlgear
• GB14048.3 low voltage switchgear and control equipment, low voltage switches, isolators, disconnectors and fuse combinations
• G814048.11 low voltage switchgear and control equipment multifunctional electrical appliances transfer switching appliances

Main Technical Parameters

Performance and Characteristics

The DNQ8 automatic transfer switch is a dual-power dual-row composite contact that uses horizontal pulling mechanisms, micro-motor pre-storage, and micro-electronic control technology to achieve zero arcing. It has reliable mechanical and electrical interlocking, no element actuator, and an independent load isolation switch.

The DNQ8 uses zero-crossing technology to meet the needs of fire linkage. It has obvious switch position indication, padlock, and other functions to safely and reliably isolate power and load.

There are four operation functions: emergency manual operation, electric remote control operation, emergency disconnection operation in automatic.

Operating Environment

• The maximum altitude shall not exceed 2000 meters.
• The temperature shall not exceed 40 ℃, and shall not be lower than -5 ℃. The relative humidity shall not exceed 95%.
• No explosive medium environment.
• No rain or snow invasion environment.

Note:

The ambient air temperature outside of the recommended +40℃ to -5℃ to -45℃ range may impact the performance of this product. Please consult the manufacturer if you expect this product to be used in these conditions.

Current Parameters

The switch has three poles and four grade (three poles + on-off neutral pole) products.

There are 27 current levels, including 16a, 20a, 25A, 32a, 40a, 50a, 63A, 80A, 100A, 125A, 160A, 200A, 225A, 250A, 315A, 350A, 400A, 450A, 500A, 630A, 800A, 1000A, 1250A, 1600A, 2000a, 2500A, 3200A, etc.

Introduction to Model Selection

Type I (basic type)
Fully automatic, mains power – mains power, external switch closing signal indicator

Type II (power generation and fire protection)
Fully automatic, mains power, mains power generation, can be forcibly switched to common, standby, double split (fire fighting), with generator signal output.

Type III (phase failure protection type)
Fully automatic, mains power mains power, mains power generation, can forcibly switch between common, standby and double split (fire fighting). When the common end detects a lack of phase, it can start the generator signal output or commonly switch to the standby power supply.

Type IV (undervoltage protection type)
Fully automatic, mains power, mains power generation, which can be forcibly switched between common, standby and double split. DC24V fire-fighting function, with generator signal output. In case of undervoltage or phase loss of common terminal phase line, the generator signal output can be started or the common power supply can be switched to standby power supply.

Introduction of Split External Intelligent Controller

Over voltage, under voltage and lack of equality fault detection of common and standby power supplies.
The switching delay of common and standby is adjustable.
Manually select the common and standby power supply and disconnect the two power supplies.
The action status indicator is displayed.

Wiring diagram

Automatic transfer switch Outline and installation dimension (mm)

Automatic transfer switch Wiring diagram

Automatic transfer switch Patch terminal diagram