ABB PCD231B
Executive Summary
The PCD231B is a numerical relay offering comprehensive primary and backup protection for medium to high voltage sub-transmission and distribution networks. It features advanced distance protection, auto-reclosing, and extensive communication capabilities.
Key Technical Parameters
1. Power Supply
Rated Voltage: 24...48 V DC, 48...125 V DC, 110...250 V DC / 100...240 V AC
Power Consumption:
Typically < 15 W (DC)
Typically < 20 VA (AC)
2. Measured Inputs
Analog Current Inputs (Phase):
Rated Current (I_n): 1 A or 5 A (configurable)
Continuous Thermal Current:
4 x I_n for 1s (1 A version)
3 x I_n for 1s (5 A version)
1-second Withstand Current: 100 x I_n
Analog Voltage Inputs:
Rated Voltage (U_n): 100 V / 110 V / 120 V (phase-to-phase) or 100/√3 V / 110/√3 V / 120/√3 V (phase-to-neutral), selectable.
Continuous Voltage: 1.4 x U_n
Frequency Rating: 50 Hz / 60 Hz (selectable)
3. Binary (Digital) Inputs/Outputs
Binary Inputs (BI): Typically 10 or 12 (depending on ordering code). 24...250 V DC, galvanically isolated.
Binary Outputs (BO / Relay Contacts):
Tripping Outputs: Typically 5 or 6 fast, heavy-duty relays (make contact).
Signal Outputs: Typically 4 or 5 change-over contacts for alarms and other signals.
Contact Rating: Typically 1000 W make / 30 W break.
4. Protection Functions
This is the core of the device. The PCD231B includes numerous protection and control functions, the most critical being:
Distance Protection (Z):
Zones: Up to 6 fully configurable zones.
Characteristics: Mho, Quadrilateral, Lens, or combined. All zones can be set independently.
Power Swing Blocking (PSB): Included to prevent unwanted tripping during system swings.
Directional/Non-directional Overcurrent Protection:
Stage 1 (I>/I>>): Instantaneous (low-set & high-set).
Stage 2 (I>>>): Instantaneous or definite time (DT).
Stage 3 (I>): Definite or Inverse Time (IDMT) characteristics (e.g., EI, VI, DT).
Earth-Fault Protection:
Directional/Non-directional: Similar stages as overcurrent, using measured or calculated residual current (I₀).
Breaker Failure Protection (BFP / 50BF): Initiated by any protection trip command.
Automatic Reclosing (AR):
Sequences: Up to 4 shots (e.g., O - t₁ - CO - t₂ - CO), with single-phase or three-phase reclosing.
Synchronism Check (25) & Voltage Check: Integrated into the reclosing logic.
Other Standard Functions: Thermal Overload (49), Under/Over Voltage (27/59), Under/Over Frequency (81), Fault Locator.
5. Metering and Monitoring
Measured Values:
Currents (I_A, I_B, I_C, I_N, I₀)
Voltages (V_AB, V_BC, V_CA, V_N, V₀)
Frequency (f)
Active, Reactive, and Apparent Power (P, Q, S)
Power Factor (cos φ)
Energy (Import/Export)
Disturbance Recording: High-speed oscillography and event recording for fault analysis.
6. Communication
Front Port: RJ45 for local communication and configuration via PCM600 software.
Rear Communication Interfaces (Options):
Serial: RS-485 or fiber-optic.
Ethernet: 10/100Base-T (RJ45) or fiber-optic (ST connector).
Supported Protocols:
IEC 61850 (Edition 1 & 2 for client/server and GOOSE messaging)
IEC 60870-5-103
IEC 60870-5-104
Modbus® RTU / TCP
DNP3.0 (Serial and TCP)
7. Mechanical & Environmental
Housing: Designed for 19" rack mounting or panel flush mounting.
Dimensions: Approximately 177mm (H) x 177mm (W) x 154mm (D) (for 4U half-rack unit).
Weight: Approximately 3.5 kg.
Operating Temperature: -40 °C to +70 °C (-40 °F to +158 °F).
Storage Temperature: -40 °C to +85 °C.
Protection Class: IP54 (front panel), IP20 (terminals).
Inventory//Affordable prices//Excellent quality//Imported with original packaging
===================================================================================================================================================================
First hand source//affordable price//Spot inventory!
•Shipping Port: Xiamen
•Manager: Rhonda
•E-mail: sales7@saulplc.com
•Tel/WhatsApp/Wechat: + 86-15359273796
•Ship to you via Fedex/DHL/TNT/UPS/EMS
•Package: Original packing with cartons
Sweden 
