XCDMP100A series digital protection and measurement device

Electric energy meter series, digital display instrument series, power automation series, rail type power instrument series

The XCDMP100A series digital protection and measurement device is a digital multifunctional relay that integrates multiple functions such as protection, measurement, monitoring, control, human-machine interface, and communication. The device is a new generation of protective products developed based on the digestion and absorption of advanced technologies at home and abroad, targeting the demand of the Chinese market. Suitable for main or backup protection of various electrical equipment and lines in non directly grounded power grids with voltage levels of 66KV and below. The XCDMP300A series digital protection and measurement device is usually used to meet the protection and automation functions required by substations, reducing maintenance workload and spare parts. The XCDMP100A series can be combined with fuses to form a protective function. When the fault current is greater than the fuse current, the protection will automatically exit and the faulty equipment will be disconnected by the fuse.

1) Environmental conditions:

Normal temperature: -10 ℃~55 ℃

Extreme temperature: -25 ℃~70 ℃

Relative humidity: ≤ 95%, no condensation.

Atmospheric pressure: 80-110 kPa.

2) Insulation performance:

Insulation resistance: greater than 500M Ω (500V megohmmeter) between each electrical circuit, and greater than 500M Ω (500V megohmmeter) between each electrical circuit and ground.

Power frequency withstand voltage: The voltage between each electrical circuit is 2.5KV/50Hz for 1 minute, and the voltage between each electrical circuit and the ground is 2.5KV/50Hz for 1 minute.

Impulse voltage: ± 0.5KV/0.5J, 1.2/50 μ s between each electrical circuit,

The distance between each electrical circuit and ground is ± 5.0KV/0.5J, 1.2/50 μ s.

High frequency withstand voltage: 2.5KV/2s between each electrical circuit

The voltage between each electrical circuit and the ground is 2.5KV/2s

3) mechanical properties

Can withstand the vibration test of severity level I specified in GB7261-87-16 standard.

Can withstand the impact test of severity level I specified in GB7261-87-17 standard.

Capable of withstanding the harsh level I collision test specified in GB7261-87-18 standard.

4) Electromagnetic compatibility performance

Capable of withstanding the strict level 3 electrostatic discharge test specified in GB/T 14598.14-2010 standard.

Capable of withstanding the harsh level 3 electromagnetic field interference test specified in GB/T 14598.9-2010 standard.

Capable of withstanding 1MHz pulse group interference test with severity level 3 specified in GB/T 14598.13-2008 standard.

Can withstand the rapid transient interference test of severity level B specified in GB/T 14598.10-2007 standard.

Capable of withstanding the severe level 3 surge impact test specified in GB/T 14598.18-2007 standard.

5) safety performance

The device complies with GB16836-1997 with a shell protection level of not less than IP20 and a safety category of Class I.

6) working power supply

Voltage range: 85-264V (AC or DC).

7) Rated control power supply

Rated voltage: AC/DC 220V (for those with a rated voltage of 110V or those requiring both AC and DC, it must be specified at the time of ordering).

8) Rated AC parameters

Rated current: 5A (rated current of 1A must be specified at the time of ordering).

Rated voltage: 100V (line voltage) or 100/√3(Phase voltage).

Frequency: 50Hz.

9) power consumption

The normal power consumption of the working power supply is less than 10W, and the maximum power consumption is less than 20W.

The power consumption of the AC current circuit is less than 1VA per phase.

The power consumption of the AC voltage circuit is less than 1VA per phase.

10) communication function

RS485 communication adopts the national standard Modbus communication protocol.

11) overload capacity

AC current circuit: 2 times rated current, continuous operation, 10 times rated current, allowed for 10 seconds, 40 times current, allowed for 1 second.

AC voltage circuit: 2 times the rated voltage, continuous operation.

12) Output contact capacity

Trip contact capacity: In a DC inductive load circuit with a voltage not exceeding 250V, a current not exceeding 1A, and a time constant L/R of (5 ± 0.75) ms, the contact breaking capacity is 50W, and it is allowed to pass a current not exceeding 5A for a long time.

Other contact capacity: In a DC inductive load circuit with a voltage not exceeding 250V, a current not exceeding 0.5A, and a time constant L/R of (5 ± 0.75) ms, the contact breaking capacity is 30W, and the allowable long-term passing current is not more than 3A.

13) Open function

The export can be arbitrarily set as a pulse or level signal.

14) Accuracy of measuring components

Response time of the measurement system: ≤ 400ms.

Measurement accuracy: U and I are at level 0.2; P is at level 0.5; Q is at level 0.5.

Accuracy=│ measured value - reference value │/full-scale range value.

Voltage measurement range: 0V to 120V, with an error not exceeding ± 0.2%.

Current measurement range: 0A~6A, with an error not exceeding ± 0.2%.

The error of active power and reactive power shall not exceed ± 0.5%.

Frequency measurement accuracy: ＜ ± 0.02Hz

The variation in measurement accuracy caused by changes in environmental temperature and atmospheric pressure is ≤± 0.5%.