ZRMV series high voltage solid soft starter (hereinafter referred to as soft starter) is a high voltage motor soft starter designed with up-to-date concept, and mainly applicable to the control of and protection for the starting and stopping of squirrel-cage type asynchronous and synchronous motors. The starter is composed of several thyristors in series-parallel, and it can meet different current and voltage requirements.

The product is widely used in electric industry with rated voltage 3000 to 10000V, building materials, chemical industry, metallurgy, steel and paper-making industries etc., and can perform well if used together with various kinds of electromechanical devices including water pumps, fans, compressors, crashers, agitators and conveyer belt etc.. It is the ideal device for starting and protecting high voltage motors.

Main Features of High Voltage Soft Starter

●Various starting methods;

●Starting control: The whole machine is equipped with local, remote (external dry contact), PLC, communication (485 interface, Modbus) start-stop control functions;

●Soft start/direct start has conversion function;

Thyristor protection: RC absorption dynamic and static voltage equalization technology to ensure reliable and safe operation of power devices in series under high voltage;

● strong anti-interference;

●Modular design;

● Communication interface: RS-485 communication interface, embedded with standard MODBUS protocol, easy to configure and connect;

●Analog signal output: 4-20ma signal;

●With 15 fault memory;

●Advanced and perfect start-stop function;

●High reliability:

●High security;

● strong practicality.

Technical characteristics

● Free of maintenance：Thyristor is an electric device without contacts. Different from other kinds of products that need frequent maintenance on liquid and parts etc., it turns the mechanical lift into the service life of electronic components, so it needs no maintenance after running for many years.

● Easy installation and operation：ZRMV is a complete system for controlling and protecting the starting of motor. It can put into operation only with the power line and motor line connected. The whole system can be tested electrically under low voltage before operating with high voltage.

● Backup：The starter comes equipped with a vacuum contactor which can be used to start the motor directly in the inside. If ZRMV fails, the vacuum contactor can be used to start the motor directly to ensure the continuity of the production.

● High voltage thyristor is a component of major loop, equipped with voltage balancing protection system and over-voltage protection system.

● ZRMV comes equipped with an electromagnetic blocking device for fear of entering the high voltage device in the electrified state.

● Advanced optical fiber transmission technique realizes the triggering detection of high voltage thyristor and the isolation between LV control loops.

● 32-bit ARM-core microcontroller is used to perform central control which is real-time and high efficient with , high reliability and excellent stability.

● LCD/touch screen display system in both Chinese and English with human-friendly operation interface.

● RS-485 communication port can be used to communicate with the upper computer or centralized control center.

● Aging experiments are made on all circuit boards.

Description of model

Soft Starter Outline & Mounting Dimension (Unit:mm)

Voltage Grade	Specification	Power (kW)	Rated Current(A)	W(mm)	H(mm)	L(mm)
3000V	ZRMV-400-3	400kW	100	1000	2300	1500
	ZRMV-630-3	630kW	150	1000	2300	1500
	ZRMV-1600-3	1600kW	400	1300	2300	1600
	ZRMV-2500-3	2500kW	≥600	Reserved
6000V	ZRMV-420-6	420kW	50	1000	2300	1500
	ZRMV-630-6	630kW	75
	ZRMV-1250-6	1250kW	150
	ZRMV-1600-6	1600kW	200	1300	2300	1600
	ZRMV-2500-6	2500kW	300
	ZRMV-3300-6	3300kW	400
	ZRMV-4150-6	4150kW	500
	ZRMV-5000-6	5000kW	≥600	Reserved
10000V	ZRMV-420-10	420kW	30	1000	2300	1500
	ZRMV-630-10	630kW	45
	ZRMV-800-10	800kW	60
	ZRMV-1250-10	1250kW	90
	ZRMV-1500-10	1500kW	110
	ZRMV-1800-10	1800kW	130
	ZRMV-2250-10	2250kW	160
	ZRMV-2500-10	2500kW	180
	ZRMV-2800-10	2800kW	200
	ZRMV-3500-10	3500kW	250
	ZRMV-4000-10	4000kW	280
	ZRMV-4500-10	4500kW	320	1300	2300	1600
	ZRMV-5500-10	5500kW	400
	ZRMV-6000-10	6000kW	430
	ZRMV-7000-10	7000kW	500
	ZRMV-8500-10	8500kW	≥600	Reserved

Basic parameters
Type of load	Three-phase squirrel cage asynchronous and synchronous motors
AC voltage	3000---10000VAC
Service frequency	50HZ/60HZ±2HZ
Phase sequence	ZRMV is allowed to work with any phase sequence (through setting parameter)
Composition of major loop	(12SCRS、18SCRS、30SCRS depend on model)
Bypass contactor	Contactor with direct starting capacity
Control power	AC220V±15%
Transient voltage overload protection	dv/dt snubber network
Start frequency	1---6 times per hour
Ambient condition	Ambient temperature: -20°C -+50°C
	Relative humidity: 5%----95% no condensation
	Altitude less than 1500m (derating when altitude is more than 1500m)
Protective functions
Open-phase protection	Cut off any phase of primary power supply in the course of starting or operation.
Over-current protection in operation	Operational Over-current protection setting: 20～500%Ie
Unbalanced phase current protection	Unbalanced phase current protection: 0～100%
Overload protection	Overload protection grade: 5A、10、15、20、25、30
Underload protection	Underload protection grade: 0～99% Action time of underload protection: 0～250S
Start timeout	Start time limit: 0～120S
Over-voltage protection	When voltage of primary power supply is 120% higher than rated value, over-voltage protection is enabled.
Under-voltage protection	When voltage of primary power supply is 70% lower than rated value, under-voltage protection is enabled.
Phase protection	Allow to work with any phase sequence (through setting parameter)
Ground protection	Protection available when grounding current is higher than set value
Description of communication
Protocol	Modbus RTU
Communication interface	RS485
Network connection	Each ZRMV can communicate with 30 ZRMV equipments in network.
Function	Operation state and programming can be observed through communication interface.
Operating interface
LCD display	LCD display/touch screen display
Language	Chinese and English
Keyboard	6 touch membrane keyboard
Meter display
Voltage of primary power supply	Display voltage of three-phase primary power supply
Three-phase current	Display current of three-phase major loop
Data record
Fault history	Record recent 15 faults information
History of number of starts	Record number of starts of this soft starter