QJZ Mining Explosion Proof Intrinsically Safe Multi-loops Vacuum Electromagnetic Starter

QJZ Mining Explosion Proof Intrinsically Safe Multi-loops Vacuum Electromagnetic Starter

Use
This series starter is used as a starter switch of coalface equipments used in the coal mine where is filled with explosive gas mixture of methane and coal dust, and in neutral point ungrounded three-phase power supply system of AC 50Hz,rated voltage is 3300V,rated current range is 0~2400A. System will shut off power supply automatically and record the fault information when the circuit is overload, short circuit ,over voltage or under voltage. System also has leakage latch and test function before switch on, meanwhile ,system displays current value and voltage value of each branch circuit. The protection functions of under voltage , overload , phase loss , short and leakage latch are available. The starter can control the motor in the way of single motor , single motor with double speed and double motor with double speed, also the starter can change the motor phase order through the isolated switch. This starter starts/shuts off coal mining machine motor, scraper blade conveyor motor, rubber belt conveyor motor, oil pump motor,cooling fan motor ,rubber belt extension motor ,rewind motor, crusher motor and transfer conveyor motor. The starter can also protect the motor and power supply circuit to realize the automation in the coalface.

Meaning of type

Technical descriptions
1.Protection system and control system adopt advanced PLC with high precision data processing and advanced protection arithmetic, high protection precision, fast feedback speed. Leakage latch, overload, short-circuit, phase break, under voltage and over voltage protection functions are available. These two kinds of system also have advantages of high intelligentized grade, stable performance, various control ways, reliable action, etc.
2. The main circuit of the product is modularized designed with standards, convenient for alternative change.
3.Chinese monitor can indicate working state, parameters and fault type. The protector also has friendly user interface, favorable man-machine communication function to improve efficiency of judging fault and removing fault greatly.
4.Displays updated information such as system voltage, switch state of on/off and three-phase current in each circuit.
5.All analog signals are changed into digital signal which is strong with anti-jamming capability, simple for cable connection, large for information transmission, reliable for control, etc.
6.The system can realize close control, remote control and duplicate speed control. We also can design new control mode according to user’s requirement.
7.The system has complete self-check and self-diagnose functions which can check the protection system and the control system is normal or not, meanwhile, it can communicate with host computer.
8.Auxiliary power source:127V and 220V..
9.The cable can be quickly connected to the input or output mode.
10..Intrinsically safe type RS485 or CAN communication interface is available.

Technical data

Type

Rated voltage  (V)

General current (A)

Quantity of isolation switch

Single circuit current (A)

Dimension       (Beyond limitation, with plug inside)          W×H×D (mm)

Auxiliary circuit

QJZ-800/3300-2

3300

800

1

400

3004×1192×976

127V,220V

4kVA,1kVA

QJZ-800/3300-4

QJZ-1600/3300-6

1600

2

3771×1192×976

127V,220V

4kVA,1kVA

QJZ-1600/3300-8

QJZ-2400/3300-9

3300

2400

3

400

3771×1192×1290

127V,220V

4kVA,1kVA

QJZ-2400/3300-10

QJZ-2400/3300-11

QJZ-2400/3300-12