TGRJ Series Medium and High Voltage Solid State Soft Starter Cabinet

Classification:

Soft Start Class

Product Message>

1. Overview

The TGRJ series medium and high voltage motor solid state soft starter cabinets are mainly used for the control and protection of starting and stopping (3~10kV) squirrel-cage asynchronous and synchronous motors. It involves connecting high-quality anti-parallel thyristor assemblies and electronic control devices between the high-voltage motor stator winding and the power source. When the motor starts, the thyristor's conduction angle is controlled according to a certain pattern (such as constant current or voltage ramp), continuously changing the input voltage to the motor stator winding until full voltage is reached. After starting, the bypass contactor is engaged. It features overload, phase loss, and start-up peak overcurrent protection functions, effectively avoiding harmful impacts on the power grid due to large motor start-up currents, allowing for the normal use of high-power motors under limited grid capacity and extending their service life. Additionally, the TGRJ series high voltage solid state soft starter cabinets have a "soft stop" function, where the motor stator winding voltage smoothly decreases during stopping, preventing sudden equipment halts, which is particularly useful for pumps (to avoid water hammer) or conveyors.

The TGRJ series medium and high voltage motor solid state soft starter cabinets are widely used in steel, chemical, metallurgy, building materials, coal mining, and other fields.

2. Performance Features

◆ Suitable for a wide range of voltages and powers, compatible with motors up to 20000kW within 3kV, 6kV, and 10kV;

◆ Feature soft start and soft stop functions, fully ensuring the safe starting and stopping of the system;

◆ Equipped with an LCD display, allowing for the setting of motor starting modes, starting times, and other parameters;

◆ Support PROFIBUS or MODBUS protocol via RS485 interface;

◆ Compact size, high degree of intelligence.

3. Model Description

4. Performance Parameter Table

Item	Parameter
Applicable motor voltage	3-10kV (special design for 11kV motors is required)
Applicable motor power	200~15000kW (custom dimension for cabinet power above 5000kW is required )
Starting current	2.5-3.5 times the rated current
Starting voltage drop	Less than 3V with bypass contactor
Starting time	0~120s adjustable
Starting frequency	Capable of frequent starting
Starting methods	Current-limit start, voltage linear curve start, voltage exponential curve start, current linear curve start, current exponential curve start
Stopping methods	Free stop, soft stop, braking stop, soft stop + automatic braking, jogging function
Overload capacity	500% for 30s, 120% for long term
Communication function	RS485 interface
Protection rating	IP4X
Overall structure	Cabinet type
Dimensions	WDH(mm):100015002300
Protection functions	Operating overcurrent protection, motor thermal overload protection, phase current imbalance protection, phase loss protection, overheating protection
Operating environment	Altitude not exceeding 1000 meters; use under reduced conditions if exceeded; Ambient temperature -25°C to +45°C; Maximum relative humidity 95% non-condensing; Installation location should be free of corrosive gases, conductive dust, severe vibration (less than 0.5G), and well-ventilated.

5. Primary Scheme Diagram

6. Selection Reference

Model	Nominal voltage(kV)	Nominal current(A)	Output power(kW)	*Dimensions WDH(mm)*
TGRJ-500/6	6	60	≤500	100015002300
TGRJ-1000/6	6	110	500~1000	100015002300
TGRJ-2000/6	6	320	1000~2000	100015002300
TGRJ-5000/6	6	600	2000~5000	100015002300
TGRJ-8000/6	6	1000	5000~8000	100015002300
TGRJ-500/10	10	60	≤500	100015002300
TGRJ-1000/10	10	80	500~1000	100015002300
TGRJ -1500/10	10	110	1000~1500	100015002300
TGRJ -2000/10	10	150	1500~2000	100015002300
TGRJ -3000/10	10	200	2000~3000	100015002300
TGRJ -5000/10	10	360	3000~5000	120015002300
TGRJ -8000/10	10	800	5000~8000	120015002300
TGRJ -10000/10	10	1000	8000~10000	120015002300
TGRJ -15000/10	10	1500	10000~15000	120015002300