Detailed introduction：

Product description

SMG-500 series of microcomputer integrated protection and control device for 110kV and below the voltage level of the interval unit protection monitoring, with complete protection, measurement, control, standby power supply and communication monitoring, Distribution and utility power system protection and control provides a complete solution that can effectively protect the high and low voltage power grid and power system security and stability of operation. Can be and other protection, automation equipment together, through the communication interface to form the automation system. All devices can be group screen centralized installation, can also be installed in situ high and low voltage switchgear.

Features

○ All Chinese LCD display, the software interface is clear and easy to understand, the operation setting is extremely convenient

○ 32-bit DSP technology, with high-precision AD converter, the device performance and stability, fast operation and high precision

○ Complete self-test function, event record, operation record, all information can be saved

○ perfect hardware and software watchdog, to ensure reliable operation of the device

○ Perfect on-line running status monitoring function

○ High-precision clock chip

○ 220V power into the open, with a sound anti-shake processing and anti-jamming performance

○ Perfect self-holding circuit and anti-jump circuit

○ High-grade, high-quality components used, the use of multi-layer technology and SMT technology

○ All metal enclosed chassis, with good anti-jamming performance

Technical Parameters

○ Rated working voltage:

○ AC220V, DC220V or DC110V (order note)

○ Rated technical data:

○ AC current: 5A or 1A (ordering instructions)

○ AC voltage: 100V

○ Frequency: 50Hz

○ Power consumption:

○ Power supply: normal work, not dry 5w

○ When the protection action, do not dry 10W

○ AC current loop: <1VA phase (IN = 5A) <0.5VA / phase

○ AC voltage circuit: <0.5VA / phase

○ Accurate working range:

○ Current: 0.04ln - 20ln.

○ Voltage: 0.4V - 1.2Un

○ Frequency: 0.9Fn -1.1Fn

○ Time: 0 - 100s

○ Protection accuracy:

○ setting accuracy: ≤ ± 5%.

○ Time Accuracy: ≤ ± 1% or setting time ± 35ms

○ The whole group action time: ≤ 35ms

○ Frequency accuracy: ≤ 0.01 Hz

○ Measurement and control part accuracy:

○ AC Accuracy: ≤ ± 0.2%.

○ Active and reactive power: ≤ ± 0.5%.

○ Digital input:

○ Input type: active

○ Opto-isolated Inputs: 8 or 11 channels

○ Operating voltage: AC220V, DC220V or DC110V (ordering instructions)

○ open contact capacity:

○ Output relay: contact rated current-carrying capacity: 250VAC / 220VDC, 5A output type: passive (null contact)

○ Signal relay: Contact rated current-carrying capacity: 250VAC / 220VDC, 5A Output type: Passive (empty contact)

○ Communication interface:

○ Electrical Characteristics: RS485

○ Transmission: Asynchronous

○ Communication protocol: MODBUS

○ Address: 1 - 110

○ Baud rate: ≤ 1Mbps

○ Optional Ethernet interface (order note)

Selection table