Description

Technical Parameters

Functions

1.3.1 Protection Functions

• Bus section automatic transfer switch (bus tie BZT) function and automatic restoration function;
• Composite voltage startup overcurrent protection function;
• Charging protection function;
• Incoming line automatic transfer switch (mutual transfer) function and mutual transfer automatic restoration function;
• Overload protection function;
• PT wire break monitoring function.

1.3.2 Communication Functions

• The device provides three communication modes: RS-485, CANBUS and electrical Ethernet (to be specified when ordering);
• Uploads real-time data including measured data, fault recorder data, faults, alarm signals, and all protection settings, configurations and coefficients; supports remote online setting modification and protection enabling/disabling;
• Receives commands from superior equipment, including remote control, system time synchronization, setting adjustment and data read/write commands.

1.3.3 Operation Box Functions

• The device integrates an operation box with anti-trip function;
• The switching current of the operation circuit is self-adaptive.

1.3.4 Device Self-test Function

• Automatically detects faults such as RAM, ROM, A/D abnormalities and power loss;
• Automatically checks parameters including settings, configurations and coefficients.

1.3.5 Event Recording & Fault Wave Recording

• Records events including protection operations and device abnormal faults;
• Records the type, operating time and operating parameters of protection events;
• Fault wave recording includes operation time, fault type and effective values before and after startup;
• Wave recording length: 2 cycles before fault and 4 cycles after fault for each channel;
• SOE data can be saved for 48 groups and fault reports for 16 groups with power-off retention.

1.3.6 Monitoring Functions

• Measures analog values including current, voltage and frequency;
• Collects position signals and other digital signals such as circuit breaker, energy storage, isolating switch, remote/local status;
• Controls circuit breaker opening and closing.

1.3.7 Display Function

• Equipped with Chinese character LCD, status indicators and keyboard operation on the panel;
• Supports measurement monitoring, online setting modification and protection enabling/disabling;
• Fault indicators can be reset via local key or remote command.

General Technical Data

Rated DC Data

• Voltage: 220V, 110V (for operation circuit, to be specified when ordering);
• Device operating power supply: universal for AC/DC 220V and 110V;
• DC voltage ripple factor ≤ 2%; voltage fluctuation: 80%~115% of rated voltage.

Rated AC Data

• Rated AC current In: 5A, 1A (to be specified);
• Rated AC voltage Un: 100V;
• AC waveform: sine wave, distortion factor ≤ 2%;
• Frequency fn: 50Hz, allowable deviation ±0.5%.

AC Circuit Overload Capacity

• 2In: continuous operation;
• 10In: permissible for 10s;
• 40In: permissible for 1s;
• 1.2Un: continuous operation;
• 1.4Un: permissible for 10s.

  No insulation damage after above overload tests.

2.4 Power Consumption

• DC circuit per protection module: ≤ 8W;
• AC voltage circuit: ≤ 0.5VA per phase;
• AC current circuit: ≤ 0.5VA per phase.

2.5 Output Contacts

• DC circuit (≤ 250V, ≤ 0.5A, time constant 5±0.75ms): breaking capacity 50W, allowable continuous current ≤ 5A;
• AC circuit (≤ 250V): breaking capacity 50VA, allowable continuous current ≤ 5A.

Application Scope