PCS-931 Line Differential Relay

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$10,215.00

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Model: PCS-931

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Overview:

The PCS-931 relay provides full-scheme current differential and distance protection solutions for transmission lines with high- speed sub-cycle distance element. As well, the pilot scheme of distance protection and earth fault protection are integrated to provide a complete protection solution for the transmission line. The PCS-931 is intended for application on overhead lines and underground cables with diverse voltage levels, including series compensated, double-circuit, heavily loaded, weak infeed (WI), short and long lines. The relay provides dual pilot channels used for redundant tele-communication or three-terminal line application. It can meet the requirements of single-pole or three- pole tripping, it also provides single- and/or three-pole auto- reclosing functions. The PCS-931 is suitable for single- and dual-breaker applications, providing optional dual CT inputs, dual breaker failure protections, dual breaker auto-reclosing and dual synchro-checks. Additionally, the relay provides the remote/ local control of circuit breaker, disconnector and earth switch.

The PCS-931 employs a wide range of innovative patented technologies, such as adaptive restraint threshold, dynamic capacitive current compensation, DPFC (Deviation Power Frequency Component) differential protection and unique power swing blocking logic, guaranteeing accurate and reliable operations.

The PCS-931 is compatible with IEC 61850 station bus and process bus applications. It supports IEC 61850-8-1 MMS, GOOSE and IEC 61850-9-2 Sampling Value. The RJ-45 faceplate port is provided for testing and setting, allowing for easier commissioning and maintenance.

Protection and Control:

Phase-segregated DPFC differential protection (87L)
Phase-segregated current differential protection (87L)
Neutral current differential protection (87L)
Five zone phase-to-phase distance protection (21P)
One zone phase-to-phase distance protection for pilot scheme (85)
Five zone phase-to-ground distance protection (21G)
One zone phase-to-ground distance protection for pilot scheme (85)
High-speed DPFC distance protection (21D)
Pilot scheme of directional earth-fault protection (85)
Four stage phase overcurrent protection (50/51P)
Four stage neutral overcurrent protection ( 50/51G)
Three stages negative-sequence overcurrent protection(50/51Q)
Breaker failure protection for one or two breakers (50BF)
Stub overcurrent protection (50STB)
Three stage undervoltage protection and three stage overvoltage protection (27/59)
One stage negative-sequence overvoltage protection (59Q)
Four stage underfrequency protection and four stage overfrequency protection (81)
Phase overcurrent protection during VT failure (51P VT)
Neutral overcurrent protection during VT failure (51G VT)
Switch-onto-fault (SOTF) logic
Unique power swing blocking releasing logic (PSBR)
Out-of-step protection (78)
Broken conductor protection (46BC)
Dead zone protection (50DZ)
Thermal overload protection (49)
Pole discrepancy protection (62PD)
Single and/or three-pole auto-reclosing (single-breaker or dual-breaker ) (79)
Reverse power protection (32R)
Remote/local control
Synchronism check (25)
Voltage and current drift auto adjustment.
Frequency tracking

Monitoring and Measurement:

Energy measurement (active and reactive energies for import and export)
CT failure supervision
VT failure supervision
Fault phase selection
Fault Locator with parallel-line compensation
Self diagnostic
Event recorder including 1024 change-of-binary-input events, 1024 supervision events, 256 control logs and 1024 device logs
Disturbance recorder including 32 disturbance records with waveforms (The format is compatible with COMTRADE.)
Pilot communication channel supervision
System frequency supervision
Clock synchronization using IRIG-B, SNTP, PPS (Pulse-Per- Second) and PPM (Pulse-Per-Minute), IEEE 1588

Communications:

Optional single or dual pilot channels (fiber optic), complying with G.703 and C37.94
Up to four 10Base-T/100Base-TX copper Ethernet ports using IEC 61850, DNP3.0 or IEC 60870-5-103 over TCP/IP
Up to two 100Base-FX optical Ethernet ports using IEC 61850, DNP3.0 or IEC 60870-5-103 over TCP/IP ( Sharing two copper Ethernet ports)
Two RS-485 serial ports using IEC 60870-5-103
One RS-485 serial port for clock synchronization
Optional Sampling value and GOOSE communication module with six optical Ethernet ports using IEC 61850-9-2 and IEC 61850-8-1 GOOSE

User Interface:

HMI interface with large-size LCD and 9-button keypad on the front panel
One front RJ-45 port for testing and setting
One RS-232 or RS-485 rear port for printer
Language selection – English + selected language
Assistant software - PCS-Explorer

Quality Assurance Period (QAP) Explanation

1.   The Quality Assurance Period (QAP) is an important aspect of our commitment to ensuring the quality and reliability of our products. We understand that customers rely on our goods to function properly and meet their expectations. To demonstrate our confidence in our offerings, we provide a warranty period during which we take responsibility for any quality issues that may arise.
2.   The length of the warranty period varies depending on the type of product. Generally, for consumable components subject to wear and tear, such as abrasion parts, the warranty period is three months. For smaller components, the warranty period is typically extended to six months. As for major equipment and machinery, we offer a one-year warranty period.
3.   We also recognize that each customer's requirements may differ, and we are open to negotiation regarding the warranty period. If the buyer requests a specific warranty duration that differs from our standard policy, we are willing to discuss and accommodate their needs accordingly.
4.   During the warranty period, we take full responsibility for any quality-related issues that arise. If a product is found to be defective or malfunctions due to manufacturing or material faults, we are committed to providing a resolution. This includes either replacing the faulty component or conducting necessary repairs to restore the product to its intended functionality. Our aim is to minimize any inconvenience caused to our customers and ensure their satisfaction.
5.   It is important to note that the warranty does not cover damages resulting from improper use, mishandling, or normal wear and tear. Additionally, if any modifications or repairs are carried out by unauthorized personnel during the warranty period, the warranty may become void.
6.   At our company, customer satisfaction is our top priority. We strive to provide high-quality products that meet and exceed expectations. The Quality Assurance Period serves as a testament to our commitment to delivering reliable solutions and ensuring that our customers have peace of mind when choosing our products.

Transportation:

1.   We offer various trade methods, including EXW, FOB, CIF, DDU, DDP, etc., allowing customers to choose the most suitable option based on their requirements.
2.   We consider the proximity to the factory where the goods are located when selecting the appropriate port of departure.
Customers can provide the destination port where the consignee is located or choose a designated port for delivery.
3.   Our transportation methods encompass a wide range of options, including waterway transportation, air transportation, and courier services such as DHL, FedEx, EMS, UPS, TNT, etc.
For waterway transportation, we work with reputable shipping companies such as APL, CMA, CNC, COSCO, EMC, EVERGREEN, HMM, KMTC, MCC, MSC, MSK, ONE, SITC, YML, etc.
Air transportation is available through airlines such as (Air China): CA; (China Southern Airlines): CZ; (China Eastern Airlines): MU; (Garuda Indonesia): GA; (Cathay Pacific Airways): CX; (Cathay Dragon): KA; (Korean Air): (Japan Airlines): JL; (Singapore Airlines): SQ; (Thai Airways International): TG, and more.
4.   The transportation time will vary depending on the destination and the chosen transportation method. We will communicate and confirm the estimated time of arrival with the customer prior to shipping.
5.   Shipping costs are influenced by factors such as transportation method, weight, size, and destination. We provide shipping cost estimation services to assist customers in budgeting.
6.   Once the goods are shipped, we offer order tracking services to provide customers with detailed information about the whereabouts of their shipment. Additionally, based on the selected trade method, we can arrange cargo insurance to provide compensation in the event of loss or damage during transportation.
7.   The specific transportation arrangements mentioned above will be coordinated by dedicated personnel, taking into account the actual situation and policies. We strive to tailor the optimal and most cost-effective shipping plan based on the information provided by the customer.

Please note that we are committed to ensuring the smooth transportation of goods and will work closely with customers to address any specific requirements or concerns they may have regarding transportation.