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PCS-978S Transformer Relay-Transformer Protection Relay-Multi-Function Power Transformer Protection-Digital Differential Protection

PCS-978S Transformer Relay-Transformer Protection Relay-Multi-Function Power Transformer Protection-Digital Differential Protection
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PCS-978S Transformer Relay-Transformer Protection Relay-Multi-Function Power Transformer Protection-Digital Differential Protection
$1.00
  • Stock: In Stock
  • Model: PCS-978S (No Ref. Price)
This product is customized according to User Requirement , the above price is for reference, please contact us.

Overview:

PCS-978S transformer relay provides fast and selective protection, control and monitoring for two-winding transformers, three-winding transformers, auto-transformers, as well as shunt reactors. The full transformer protections are configurable by user. Ancillary functions of fault diagnostic, disturbance records, event records and communication function are integrated in the device.

PCS-978S is applicable not only to conventional substations, but also to digital substations. It supports IEC 61850 Editions 1 and 2 and provides GOOSE and SV network interfaces with high real-time performance. The process level network supports peer-to-peer (P2P) mode and networking mode, including single network mode and dual network mode. The station level network could also receive and send MMS messages (such as interlocking signals) or process level GOOSE messages (such as trip signals).

 

Protection Functions:

  • Transformer differential protection (87T)

  • Inrush blocking

  • CT saturation blocking

  • Overexcitation blocking

  • CT circuit failure blocking

  • Amplitude compensation

  • Phase angle compensation

  • Restricted earth-fault protection (64REF)

  • Winding differential protection (87W)

  • Reactor differential protection (87R)

  • Inter-turn fault protection for reactor (21IT)

  • Four zone phase-to-phase distance protection (21T)

  • Four zone phase-to-ground distance protection (21T)

  • Overexcitation protection (24)

  • Phase overcurrent protection (67P, 50/51P)

  • Earth-fault protection (67G, 50/51G)

  • Negative-sequence overcurrent protection (67Q, 50/51Q)

  • Thermal overload protection (49)

  • Breaker failure protection (50BF)

  • Phase undervoltage protection (27P)

  • Phase overvoltage protection (59P)

  • Zero-sequence overvoltage protection (59G)

  • Overfrequency protection (81O)

  • Underfrequency protection (81U)

 

Control Functions:

  • Switchgear control

  • Double point status synthesis

  • Remote/Local control mode switch

  • Interlocking logic for control

  • Direct control

  • Closing synchronism check with voltage selection

  • Switchgear trip counter

  • Tap position indicator and control

  • Automatic voltage regulation (90V)

  • Parallel voltage regulation (PVR)

 

Supervision functions:

  • CT circuit failure supervision (CTS)
  • VT circuit failure supervision (VTS)
  • Tripping circuit supervision (TCS)
  • Self diagnostic
  • Powerful faults recording (max. buffer for 10,000 sampled points at 1.2 or 9.6kHz)
  • Event recorder including 1024 disturbance records, 1024 binary events, 1024 supervision events, 256 control logs and 1024 device logs
  • Disturbance recorder including 64 disturbance records with waveforms (the file format of disturbance recorder is compatible with international COMTRADE file)
  • Single line diagram representation in display

 

Measurement and Metering:

  • U, I, P, Q, S, Cos, f

  • Positive, negative and zero sequences

  • Max.15th harmonics

  • Energy metering (active and reactive energies for import and export)

  • DC analog inputs for transducers (0~20mA or 0~±10V)

 

Communication:

  • Support of various protocols

Modbus, DNP3.0, IEC 60870-5-103, IEC 61850 Ed.1 & Ed.2, IEC 61850 MMS Server, IEC 61850-8-1 GOOSE, IEC 61850-9-2LE SV, IEC 62439 Parallel Redundancy Protocol (PRP), IEC 62439 High-availability Seamless Ring (HSR) Redundancy Protocol, IEEE 802.1w Rapid Spanning Tree Protocol (RSTP).

  • Up to four 10Base-T/100Base-TX copper Ethernet ports

  • Up to fourteen 100Base-FX optical Ethernet ports

  • Up to four 1000Base-SX optical Ethernet ports

  • Two RS-485 serial ports for communication, the second one can be used as a RS-232 port for printer

  • One RS-485/TTL serial port for clock synchronization

  • One BNC port for clock synchronization

  • One ST-connector port for clock synchronization

  • Two RJ45 debugging ports (front and rear)

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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.