What is Mine Explosion-Proof Starter (QJZ) ?-wantaiglobal.com

What is Mine Explosion-Proof Starter (QJZ) ? Apr 07, 2025

Product Introduction

This series of products are mainly used in coal mines and other explosive gas environments containing methane and coal dust mixtures in AC 50Hz voltage 1140V or 660V or 380V three-phase neutral point ungrounded lines to control the start and stop of three-phase asynchronous motors locally or remotely, and can perform reversing when the motor is stopped. (Models with N can control the forward and reverse rotation of three-phase asynchronous motors).

Technical advantages and features
1. It has local control and intrinsically safe remote control functions; (models with N only have intrinsically safe remote control functions)
2. It has water level automatic control function, automatically controlling the start and stop of the water pump according to the water level; (models without N have this function)
3. It has menu-based operation structure, large-screen LCD Chinese display, fault query, fault record and corresponding fault alarm information functions, and can record the specific time when the fault occurs;
4. It has functions such as smart screen integrated RS-485, Ethernet, Bluetooth, Wif, handheld terminal APP one-touch connection and LINUX operating system. RS-485 communication adopts Modbus RTU communication protocol format, Ethernet and Wi-Fi adopt Modbus TCP protocol format, which is convenient for networking and communication mode selection;

5. It has reliable mechanical interlocking and electrical interlocking functions.

Main technical parameters

Model	Rated current	Rated voltage	Dimension	Weight
QJZ2-30.60/660(380)	30A.60A	660V /380V	590mm×410mm×603mm	112kg
QJZ2-30、60.80/1140(660)	30A.60A、80A	1140V /660V	590mm×410mm×603mm	112kg
QJZ2-120/1140(660)	120A	1140V /660V	605mm×460mm×795mm	152kg
QJZ2-200/11401660、380)	200A	1140V /660V /380V	650mm×500mm×748mm	175kg
QJZ2-315.400/1140(660、 380)	315A.400A	1140V /660V /380V	710mm×520mm×760mm	240kg
QJZ2-500.630/1140(660)	500A.630A	1140V /660V	896mm×630mm×1076mm	444kg
QJZ2-30.60/660(380)N	30A.60A	660V /380V	590mm×410mm×603mm	120kg
QJZ2-30.60.80/1140(660)N	30A.60A.80A	1140V /660V	590mm×410mm×603mm	120kg
QJZ2-120/1140(660)N	120A	1140V /660V	605mm×460mm×795mm	160kg
QJZ2-200/1140(660、380)N	200A	1140V /660V / 380V	670mm×520mm×775mm	242kg

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