KGL Series Synchronous Motor Excitation Cabinet

KGL series synchronous motor excitation cabinet adopts digital control technology, monitors operating status of synchronous motor by the microcomputer, featuring precise control

Classification:

Single channel excitation cabinet

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1. Overview

KGL series synchronous motor excitation cabinet adopts digital control technology, monitors operating status of synchronous motor by the microcomputer, featuring precise control, strong anti-interference ability, friendly host interface, easy and fast operation, stable and reliable operation. It is widely used for dragging such as mining ball mill, smelting blower, cement factory tube mill, chemical fertilizer factory joint compressor, carbon dioxide compressor, cold storage ammonia compressor, oxygen generator, water pump and other general machinery and equipment by the synchronous motors. The device mainly provides DC excitation power supply for large synchronous motors and is used in combination with synchronous motors alone.

2. Performance Features

◆ Adopting digital control technology improves the reliability of the system operation, ensures precise control,without debugging;

◆ The reset circuit of this device can automatically resume operation under severe interference conditions to ensure continuous operation of the system;

◆ The combination of hardware detection and software determination is used for full voltage starting, excitation and fault reporting to ensure the smooth polarity of slip excitation and backup excitation;

◆ The demagnetization voltage of the demagnetization circuit adopts step-by-step automatic adjustment method and has the function of false conduction protection;

◆ With out-of-step protection function, it can automatically detect out-of-step faults during operation and issue protection instruction;

◆ Synchronous motors can automatically demagnetize during starting, stopping and asynchronous operation to prevent the excitation device from being broken down by excessive induced voltage;

◆ With user-friendly operation interface, the controller fault detection function can record the working state at the moment of shutdown due to fault, in order to troubleshoot the device;

◆ Automatic zero-voltage demagnetization during driving and stopping, and automatic high-flux demagnetization during synchronous operation of the motor maximize the protection of available SCR and motor safety.

3. Model Description

4. Performance Parameter Table

Item	Parameter
Main circuit voltage	Three-phase AC380V to 10000V
Control circuit	AC380V
Rated excitation voltage	50V~170V
Rated excitation current	130A~450A
Adjustment mode	Single regulator, dual regulator
Communication	RS485 interface
Protection rating	IP20
Overall structure	Cabinet type
Limitation and protection	Minimum excitation limit, inverse time field-forcing limit, over-excitation limit, minimum reactive power limit, out-of-step protection, long-time non-excitation protection (power frequency asynchronous starting of motor), PT disconnection protection, excitation control 4 to 20mA circuit disconnection detection and protection, software and hardware fault monitoring for control power supply and regulator.
Operating environment	Altitude not higher than 1000 meters, temperature range -10℃ to +50℃, relative humidity less than 85% RH, no condensation, indoor installation, no conductive dust, no corrosive gas, no risk of explosion.

5. Selection Reference

Product model	Applicable motor voltage (V)	Rated excitation voltage (V)	Rated excitation current (V)	*Dimensions WDH (mm)*
KGL-130/50~75	380~10000	50~75	130	8008002200
KGL-200/50~170	380~10000	50~170	200	8008002200
KGL-300/50~170	380~10000	50~170	300	9008002200
KGL-450/50~170	380~10000	50~170	450	10008002200

6. Instructions for Ordering

◆ Users must provide the rated excitation voltage, rated excitation current, power and rotor resistance at 75℃ of the synchronous motor when ordering the product;

◆ Confirm whether the user has any special requirements in terms of the color of the excitation cabinet body;

◆ Users can select and match the company's TRD / TRG high and low voltage squirrel cage motor liquid resistance soft starter cabinet or TGRJ / TGRD high and low voltage solid motor soft starter cabinet.

Key words:

KGL Series Synchronous Motor Excitation Cabinet

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