SDB - 3250 digital integrated motor protector is dedicated to the coal mine 380 v, 660 v and 1140 v power supply system, with under 250 a mining flameproof magnetic starter, realize the comprehensive protection of the motor intelligent protection device and network communications.
SDB - 3250 digital motor integrated protector has many advantages such as low power consumption, small volume, complete function, easy to use, stable performance, reliable work and long life. It can completely replace the old protectors such as JDB and ABD8, which are the replacement products of JDB and ABD8. The sdb-3250 digital motor integrated protector is used to improve the function of the magnetic starter and to protect more accurately.
SDB-3250 digital motor integrated protector
The protective device is designed and produced by the electronic protectors of the mt175-1998 mine isolation type electromagnetic starter. Some functions and
indicators are better than the requirements in the standard.
(1) short circuit protection (2) plugging protection (3) long time starting protection (4) overload protection (anti-timing)
(5) lack of phase protection (6) three-phase unbalance protection (7) leakage (grounding) (8) overvoltage protection/blocking
(9) under-voltage protection/lock (10) overtemperature alarm (11) short circuit test (12) leakage test
Fully functional motor protection
Protector with digital circuit and single-chip microcomputer technology design, with high precision data processing and advanced protection algorithm, realization of
short-circuit, overload, locked-rotor, long starting, imbalance of three phase current, phase, overvoltage, undervoltage, electric leakage blocking all functions such as
MODBUS communication interface
Communication interface with essential performance, MODBUS communication protocol, convenient access to mine network, all operational data and status can be
uploaded via communication interface. The operation of remote setting and remote control can also be realized to realize the monitoring of the lowest level equipment of
48 incident records
Protector record 48 banding time scale of the latest events, may at any time protector motion event query, which has made great fault handling and screening, at the
same time provide more information and basis for accident analysis.
Compatible early products
One-piece chassis, built-in current transformer, compact structure, convenient installation. The appearance size and installation method are consistent with the early
motor protectors such as JDB and ABD8, which can be replaced directly to facilitate user transformation and upgrading.
Wide range setting current
The rated current covers a range of 5 ~ 250A, which satisfies the application of magnetic starter for various specifications such as 80A, 120A and 225A. The current
setting differential reaches 0.1 A, achieving precise setting.
LCD displays Chinese menu
Protector is equipped with 128 * 64 LCD display, Chen Chinese multilayer menu human-computer interaction interface, it can display the run data, running state and fault
state, the current time, such as data, display information is complete.
2 Programmable signal input
2 road isolation of programmable switch signal input interface, and, according to the requirements of network running state feedback signals, external chain and unlock
signal, realize power operation state display, safety chain and fault unlock and various control functions.
Built-in built-in battery
The protective device has a built-in battery, which has the backup battery to support the function, which can support the continuous backup time of not less than 30min.
The circuit supplied by this battery is designed by benan. After the power is off, open the outer shell for querying and setting.
Built-in temperature sensor
The protective device has a built-in micro temperature sensor which can measure and display the internal temperature of the cavity, and can detect the excessive
temperature in the cavity caused by all kinds of anomalies, and send out the alarm information in time.
When the protector is powered by a backup battery, it can automatically sleep and extend the backup support time to the maximum, automatically activated when
pressing any key or on the power.
Rated input voltage：AC36V 50Hz Allowable voltage fluctuation：60～120% The power consumption of the largest：3W Output interface capacity：AC250V/7A DC28V/7A Setting current range：5～250A Protective current range：0～2500A
Resistance measurement range：-25～+125℃ Communication interface：RS485 MODBUS RTU Battery support time：≥30minutes（consecutively）
Event record number：48 (time scale) External dimension：180*42*120mm weight：770g（No busbar and mounting bracket）
Installation：Busbar compression, bracket fixation or guide rail