ASP-571H Color Display Microcomputer Integrated Protection Device

Description

Main Functions

1.2.1 Protection Functions

• Three-stage overcurrent protection (including instantaneous overcurrent, time-delayed instantaneous overcurrent, and definite-time overcurrent protection), each stage can be enabled or disabled independently.
• Reclosing function: three-phase one-shot automatic reclosing.
• Post-reclosing acceleration function.
• Overload protection: trip or alarm output is selectable.
• Two-stage zero-sequence overcurrent protection: trip or alarm output is selectable.
• High-side zero-sequence current protection: trip or alarm output is selectable.
• Low-side zero-sequence current protection: trip or alarm output is selectable.
• Zero-sequence overvoltage protection: trip or alarm output is selectable.
• Undervoltage protection: trip or alarm output is selectable.
• Overvoltage protection: trip or alarm output is selectable.
• Inverse-time overcurrent protection.
• Inverse-time zero-sequence current protection.
• Phase failure protection.
• Under-frequency protection.
• Over-frequency protection.
• PT wire break protection.
• Non-electrical quantity protection: heavy gas trip, over-temperature trip, light gas alarm, over-temperature alarm, etc. (Users can define non-electrical quantities as required, see Appendix 2.)

1.2.2 Device Self-check Function

• Automatically detects faults in RAM, FLASH, A/D converter, etc.
• Automatically checks setting values and other parameters.
• Equipped with power loss alarm function.

1.2.3 Event Recording Function

• Records events including protection operation events, alarm events, and device self-check faults.
• Records the type and time of protection operations, as well as the type and occurrence time of self-check faults.

1.2.4 Communication Function

• Uploads real-time data, including measured data, fault alarm signals, and protection settings.
• Receives control commands from the superior control system.
• Supports GPRS communication (to be specified when ordering).

1.2.5 Monitoring Function

• Displays protection current, voltage and power values.
• Collects switching signals such as circuit breakers, isolating switches and non-electrical quantities.
• Remote control of circuit breaker opening and closing from the backstage monitoring system.

1.2.6 Display & Operation Function

Main Features of the Device

1.3.1 High-performance Hardware System

1.3.2 Multifunctional Hardware Platform

1.3.3 Comprehensive Protection Design

1.3.4 Communication Interfaces

1.3.5 Complete Event Recording

1.3.6 Comprehensive Self-check

1.3.7 Accurate Real-time Clock System

General Technical Data

Rated DC Data

Rated AC Data

• Rated AC current In: 5A, 1A
• Rated AC voltage Un: 100V
• AC power waveform: sine wave, distortion coefficient ≤ 2%
• Frequency fn: 50Hz (60Hz optional, to be specified when ordering), allowable deviation ±0.5%

Overload Capacity

• AC current circuit:
  • 2×In: continuous operation
  • 10×In: permissible for 10s
  • 40×In: permissible for 1s
• AC voltage circuit:
  • 1.2×Un: continuous operation
  • 1.4×Un: permissible for 10s

Power Consumption

• AC current circuit: ≤ 1VA per phase at In=5A; ≤ 0.5VA per phase at In=1A
• AC voltage circuit: ≤ 1VA per phase at rated voltage
• Operating power supply circuit: ≤ 8W

Output Contacts

• In DC circuits with voltage ≤ 250V, current ≤ 0.5A, time constant 5±0.75ms: breaking capacity 50W, allowable continuous current ≤ 5A.
• In AC circuits with voltage ≤ 250V: breaking capacity 50VA, allowable continuous current ≤ 5A.

Insulation Performance

• Insulation resistance: ≥ 500MΩ between all circuits and the enclosure under standard test conditions.
• Dielectric strength: withstands AC 50Hz, 2kV (RMS) for 1 minute without insulation breakdown or flashover. For re-test, apply 75% of the specified voltage.

Impulse Voltage

Anti-interference Capability

Mechanical Performance

• Operating condition: withstands vibration response and shock response test at severity level I.
• Transportation condition: withstands vibration endurance, shock and bump test at severity level I.

Environmental Conditions

2.10.1 Normal Operating Atmospheric Conditions

• Ambient temperature: -10℃ ~ +65℃
• Relative humidity: ≤ 95%, no condensation.

2.10.2 Limit Temperature for Storage & Transportation

• Temperature range: -40℃ ~ +85℃. No irreversible damage occurs without excitation, and the device operates normally after temperature recovery.
• Atmospheric pressure for packaged devices: 200~275kPa (altitude ≤ 5,000m).

2.10.3 Surroundings

Main Function Data

Protection Operating Time (including output relay time)

Accurate Operating Range

• Minimum precise current: 0.08In; Maximum precise current: 20In
• Minimum precise voltage: 0.4V; Maximum precise voltage: 120V

Setting Range

• Current setting: 0.20~99.99A (In=5A); 0.20~20.00A (In=1A)
• Overload current setting: 0.20~99.99A
• Zero-sequence current setting:
  • 0.2~5.00A (isolated neutral system)
  • 0.50~99.00A (380V three-phase four-wire single-phase earthing system)
• Inverse-time overcurrent setting: 0.20~99.99A
• Zero-sequence voltage setting: 20~120.00V
• Undervoltage setting: 20~100.00V
• Overvoltage setting: 20~120.00V
• Current time setting: 0~120.00s
• Inverse-time overcurrent time constant: 0.1~120.00s
• Voltage time setting: 0.1~120.00s

Setting Errors

• Current error: ±2.5% when I>1.00A; ±50mA when I<1A
• Zero-sequence current error: ±5% (±30mA when I<1A)
• Zero-sequence voltage error: ±3%
• Voltage error: ±3%
• Time error: ±40ms
• Inverse-time overcurrent time error: ±5.0%

Telemetry Accuracy

Tele-signal Resolution