product overview

Control device: Type A is a built-in controller, Type B is an external controller

Product structure: small size, high current, simple structure, ATS integration

Features: Fast switching speed, low failure rate, easy maintenance, reliable performance

Wiring method: Front board wiring

Conversion methods: grid to grid, grid to generator, self switching and self restoring, self switching but not self restoring

Product shelves: 63, 100, 160, 250, 400, 630

Product current: 20, 32, 40, 50, 63, 80, 100, 125, 160, 200, 225, 250, 315, 350, 400, 500, 630A

Product category: Circuit breakers: C65, NS, NSX, NSE

Number of product poles: 2, 3, 4

Product standard: GB/T14048.11-2008

A T S E: CB level, with overload and short circuit protection

Model and meaning

Note: 1. For non-standard product customers, specific requirements should be specified, such as the form of fire signal (constant voltage DV24V/pulse DC24V/constant voltage AC220V/pulse AC220V, default value when not marked)

For constant voltage DC24V, the type (position/alarm) and quantity (default value is 1 set of position feedback signals) of passive feedback signals.

2. If the customer has special requirements for the execution of circuit breakers and release devices, they need to be specified separately.

standard

IEC60947-6-1:1998 (version 1.2) "Low voltage switchgear and control gear, part 6: Automatic transfer switching devices"

GB/T14048.11-2008 "Automatic Transfer Switchgear for Low Voltage Switchgear and Control Equipment"

Characteristics of KGQ2W automatic transfer switch

Three optional working modes: 1 Self investment and self recovery work mode; two Mutual backup working mode; three Self investment without self recovery work mode;

Three stable working positions: 1 Common power supply and backup power supply are divided; two Common power supply and backup power supply combined; three Common power supply and backup power supply;

◎ Usage category: AC380V, motor load or mixed load containing motor, cathode load, and incandescent lamp load of less than 30%.

◎ Small size, simple structure, beautiful appearance, with specifications of 1A-630A, easy operation, long service life, 2 pole, 3 pole, 4 pole switches can be provided.

The switch switching driver is driven by a microcontroller, with a simple structure, reliable and balanced switching, no noise, and low impact force.

The switch is equipped with mechanical and electrical interlocking protection to ensure reliable operation of the automatic transfer switch without interference.

The switch can automatically switch with load, and can be manually switched using a handle in emergency situations.

◎ Features compared to similar products from other companies:

1) The breaking capacity of the controller protection fuse is 50kA, which improves the safety of power distribution.

2) An interlock is added between manual and automatic operation modes to ensure that manual operation is not possible under automatic conditions.

3) When the circuit breaker handle is broken, the contact is stuck, or there is a load fault (overload, short circuit), the automatic transfer switch does not switch, truly achieving electromechanical interlocking.

4) The escapement mechanism of the MCB automatic transfer switch has been changed from a fork type to a concave type, which solves the problems of MCB extended handle fracture and MCB asynchronous closure, restores the functions of MCB quick closing and quick breaking, and effectively improves the mechanical life of the product.

5) Providing wrong wire protection, when the user connects the power neutral wire to the live wire in reverse, an alarm is triggered through sound and light, improving the reliability of the equipment.

KGQ2W automatic transfer switch function explanation:

A) Self switching and self recovery: When the common power supply is normal, the controller sends instructions, the common power supply controls the circuit breaker to close, the backup power supply controls the circuit breaker to open, and the automatic transfer switch is in the (1,0) state. When the common power supply is abnormal, the controller sends a command, the common power supply controls the breaker to open, the backup power supply controls the breaker to close, and the automatic transfer switch is in the (0,1) state. When the common power supply returns to normal, the controller sends instructions, the common power supply controls the circuit breaker to close, the backup power supply controls the circuit breaker to open, and the automatic transfer switch is in the (1,0) state again.

B) Self switching without self recovery: When the common power supply is normal, the controller sends instructions, the common power supply controls the circuit breaker to close, the backup power supply controls the circuit breaker to open, and the automatic transfer switch is in the (1,0) state. When the common power supply is abnormal, the controller sends a command, and the common power supply controls the circuit breaker to open, the backup power supply controls the circuit breaker to close, and the automatic transfer switch electrical power supply is in the (0,1) state. When the common power supply is restored to normal, the automatic transfer switch device is still in the (0,1) state. Only by operating the "reset" button can the common power supply control circuit breaker be closed and the backup power supply control circuit breaker be opened, and the automatic transfer switch device will return to the (1,0) state.

C) Mutual backup: When the common power supply is normal, the controller sends instructions, the common power supply controls the circuit breaker to close, the backup power supply controls the circuit breaker to open, and the automatic transfer switch is in the (1,0) state. When the common power supply is abnormal, the controller sends a command, and the common power supply controls the circuit breaker to open, the backup power supply controls the circuit breaker to close, and the automatic transfer switch is in the (0,1) state. When the common power supply is restored to normal, the automatic transfer switch is still in the (0,1) state. Only when the backup power supply is cut off can the common power supply control breaker be closed and the backup power supply control breaker be opened, and the automatic transfer switch will return to the (1,0) state.

D) Command (Fire Control) Reset (Fire Control Command Not Applicable): Regardless of the state of the automatic transfer switch, the fire control center issues a non applicable command to cause all the common power control circuit breakers and backup power control circuit breakers of the automatic transfer switch to open, and the switch is in the (0,0) state.

E) Feedback signal: a signal reflecting the air to air working status of the two control circuit breakers of the automatic transfer switch, usually taken out from the auxiliary contacts of the control circuit breaker.

F) Power grid - Power grid: The power supply of the automatic transfer switch is taken from two power sources of the power grid.

G) Grid Generator: The power supply of the automatic transfer switch is taken from the grid power supply and the generator:

H) Contact type: The contact type automatic transfer switch consists of three plastic shell circuit breakers. The QA and QB plastic shell circuit breakers are respectively supplied by two power sources or two sections of line power. The QC plastic shell circuit breaker is connected to the QA and QB output terminals. When any one of the power sources fails, the circuit breaker opens and the QC circuit breaker closes. Through this circuit breaker, power is supplied from another power source. When the fault is eliminated, the contact circuit breaker opens and the source circuit breaker closes again. The automatic transfer switch device has resumed normal operation.

Quick Selection Table for KGQ2W Automatic Transfer Switch

Function and Characteristics of KGQ2W Automatic Transfer Switch

Type A controller

The A-type controller is placed inside the automatic switch and determines whether to switch the power supply based on whether the working power supply voltage is normal.

Switching between automatic/manual working mode

Automatic operation: Set the automatic/manual switch to the automatic position

Manual operation: Set the automatic/manual switch to the manual position

Setting of delay time and working status (adjust the position of the dip switch, see the table below for details)

Conversion delay t1:0, 5, 15, 30s

Return delay t4:0, 5, 15, 30s

Working status: self switching and self recovery, mutual backup, self switching but not self recovery

Setting of Action Parameters for Type A Controller

Note: "0" does not mean 0 seconds, but the minimum delay that can be set. The system has a fixed delay of 200-400ms.

pilot lamp

H1 indicator light: constantly on - normal use of power supply, flashing - common power supply failure

H3 indicator light: When the light is on, the common power supply is closed

H5 light: When the light is on, it is commonly used for overcurrent protection (only for NS circuit breaker type switches)

H2 indicator light: constantly on - normal backup power supply, flashing - backup power supply failure

H4 indicator light: light on - backup power closed

H6 light: light on - standby overcurrent protection (only for NS circuit breaker type switch)

Action sequence: Type A controller

B-type controller

The B-type controller is located outside the device and has rich functions

◎Determine whether to perform power conversion based on whether the working power supply voltage is within the set normal range and the working mode of the automatic transfer switch.

◎Start stop control of standby generator set.

◎Convenient button style manual forced conversion action.

◎Fire linkage function (optional module)

Appearance and installation dimensions

Note: The size of KGQ2WA-63 2P product is the same as that of 3P product.