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Vertical microcomputer protection device

Short Description:

This microcomputer comprehensive protection and control device is suitable for power networks of 35KV and below, and provides protection, control, measurement and monitoring functions for transmission lines, transformers, capacitors, motors and other main equipment.


Product Detail

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Model Description

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Product Features Overview

This microcomputer comprehensive protection and control device is suitable for power networks of 35KV and below, and provides protection, control, measurement and monitoring functions for transmission lines, transformers, capacitors, motors and other main equipment. In the equipment, the screen can be grouped together in a centralized manner, and it can also be installed in a distributed manner. Through the standardized field bus interface, it supports multiple joints to work together to realize system-level management and comprehensive information sharing. This series of microcomputer protection measurement and control devices is fully in line with this technology. And adapt to the requirements of future development, it is the ideal basic equipment for the transformation and distribution automation system.

1.1. Real-time data measurement
The comprehensive protection device adopts a new and improved measurement technology, and has a powerful vectorized calculation function. Due to the different digital processing of various analog values, it effectively separates the fundamental wave, high-frequency components and DC components, eliminating The influence of offset and noise on the measurement accuracy, and the effective compensation of the decay of the signal measurement components ensure the long-term, stable and reliable operation of the device in various harsh environments.
▲la, lb, lc protection current (measured);
▲ UAB, UBC, UCA three-phase line voltage (measured);
▲l0 zero-sequence current (measured):
▲3U0 zero sequence voltage (measured):
▲The sampling element adopts precision voltage and current transformer, which is small in size, light in weight and small in load;
▲Using high-speed and high-precision DSP microprocessor, it can quickly process the 9th harmonic quantity;

1.2. Control output
▲ Closing relay:
▲Opening relay;
▲Protection relay;
▲Accident warning relay;
▲Event alarm relay;
▲Two remote control output relays;
▲Optional independent anti-jump circuit without opening and closing current requirements:

1.3. Binary input
▲ 10-way passive switch input isolated by photoelectric coupling elements:
▲The unique anti-shake filter algorithm eliminates the misjudgment caused by bounce and instantaneous spark interference;

1.4. Binary output relay output
▲Jumping and closing relays can be turned on and off by software options and external connections and switches;
▲The signal relay can be flexibly configured as a holding type or a pulse inching type output;

1.5. Friendly man-machine interface
▲The comprehensive protection device is equipped with a dot-matrix 128*64, high-contrast graphic liquid crystal display with white characters on a blue background;
▲The operation is based on the full Chinese menu of the WN interface, which can display system parameters such as analog quantities, primary system diagrams, measurement data, switch status, real-time data, event records, and protection settings;
▲The soft textured buttons are used to select the screen menu and drive, switch the data screen and set the value. The operation of the interface will not have any impact on the system operation, and the value modification is protected by a password;
▲ Through the bus interface, it can be connected with a PC to realize more parameter programming;
▲Monitoring, self-diagnosis and main working conditions of equipment circuits;
▲Alarms for internal abnormalities (data, fixed values, storage components, ports, communications) of the device:
▲PT disconnection alarm;

1.6, SOE event and fault records
Display and save a number of recent event records. If a new fault occurs, it can describe the system fault and the response of the protection device in detail. The event record details include:
▲Record fault tripping, displacement and operation;
▲Resolution 2ms, keep power off;

1.7. Communication
Supported communication interfaces are: CAN, RS485, RS232, RS422;
Supported physical communication media include:, carrier dedicated line, MODEM, optical fiber, etc.;
A network system with a geographical span can be formed through a multi-point network connection. The single line is stable in the RS485 bus mode, stably connecting 64 nodes, the maximum transmission distance is 1200m, and the maximum transmission rate can reach 9600bps;
▲Industrial computer through RS485-RS232 converter, through RS485-optical fiber converter:
▲ Communication protocol Modbus-RTU, etc.;

Product technical specifications and references

2.1、Environmental Conditions

Work

Temperature range

-10~+55°C

Relative humidity

45-80% for a short time 95% non-condensing

Atmospheric pressure

80-110kpa

Altitude

<2000m

Storage and transportation

Temperature range

-40~+75°C

2.2、Power supply

DC power supply

Rated voltage

220VDC110V

Permissible range

100250V

AC power

Rated voltage

220VAC

Permissible range

150250V

Power consumption

The normal

<3W/VA

Action

<10W/VA

Power drop

50%

1s

0%

100ms

2.3、Protect AC Signal Input

Electric current

Rated current In

5A1A

Power consumption

<0.5VA

Heat stable

Continuous

20A

1s

100A

Dynamic stabilization

10ms

250A

Voltage

Rated voltage Un

100V

Ultimate voltage

200V

Power consumption

<0.3VA

2.4、Measuring AC Signal Input

Parameter name

Measuring range

Error

Power dissipation

Three-phase voltage UAB, UBC, UCA

10…129VxPT

<=0.5%

<=0.3VA

Three-phase current la, lb, lc

0.2…6AxCT

<=0.5%

<=0.3VA

Power factor PF

0.5L…0.5C

<=0.5%

2.5、Binary input signal

Passive contact signal input

Number of signal inputs

10 way

The scope of work

24V DC (self-produced by the device)

Consumption power

<0.3W

Resolution

2ms

Pulse frequency<100Hz

2.6、Mechanical Properties and Structure

Package dimensions

(H)/(W)/(D)mm (for reference only)

Device size

(H)/(W)/(D)mm (for reference only)

Device weight

Approx. kgmm (for reference only)

Shell material

Aluminum profile structure

Degree of protection

IP5SNI

Installation method

Embedded or tiled, top-impact fixed

2.7、Binary relay output

Maximum Switching Voltage

250V AC/30VDC

Maximum switching current

8A

Maximum Switching Power

1250VA/150W

Output contact capacity

<250V, 1A (inductive load), disconnection capacity <50W

Specified load

5A 250V AC/30V DC

Dielectric withstand voltage

4000VAC

Insulation resistance

1000MΩ

2.8、Event record

Logging Event Type

Fault, over limit, switch displacement, external tripping, modification of fixed value

Number of recorded events

30

Power-down retention

Record event content

Year, month, day time scale, event type details

Time resolution

2 ms

Event query method

Far away

Communication call

On the spot

Button menu LCD display

2.9、Communication Interface

Electrical Specifications (Isolated RS485)

Number of communication nodes

64

Transmission rate

4800…9600 Buad

Transmission distance (9600Buad)

1000m

Connector

Terminal output

IEC60870-5-103

8 data bits, 1 stop bit, even parity

2.10、Test requirements

Insulation test

Insulation resistance

2kv50Hz1minute

Power frequency withstand voltage IEC60-2

50MΩ

Damp heat test IEC60-2-30

50MΩ 1.5kV

Shock withstand voltage test

Switch value input circuit to ground

±5kV

Other circuit IEC255-5

±5kV

Mechanical shock test

Test position

Triaxial

Test frequency range

10…150Hz

Crossover Frequency

f60Hz; fixed amplitude 0.075mm

Number of sweep cycles per axis

f>60Hz; constant acceleration 10m

IEC255-21

10/S2

2.11、EMC electromagnetic compatibility

Anti-high frequency interference test

IEC255-22-1

1M attenuation shock wave

Common Mode

2.5kV

Differential mode

1.0kV

Electrostatic discharge interference test

Grade III

IEC6100-4-2

Contact

6.0kV

Air

8.0kV

Radiated electromagnetic field interference test

EN55011

Strength of the test field

Scanning frequency

150kHz…80MHz

Radio Frequency Interference Test

Directly referenced in a common modeIEC6100-4-6

10V/m(rms)

f=150kHz…80MHz

in a radiative manner quote

IEC6100-4-6

10V/m(rms)

f=80Hz…1000MHz

Fast Transient Tests

IEC255-4

Common Mode Voltage Peak

Pulse frequency

Duration of each polarity

2kV 4kV

5kz 2.5kz

10min

Surge lightning test

IEC6100-4-5

Power supply, AC, DC inlet

4KV Common mode

2KV Differential mode

I/O Entrance

2KV Common mode

1KV Differential mode

Application case diagram

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