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PCS-978 Transformer Relay

PCS-978 Transformer Relay
INQUIRY PRODUCT
PCS-978 Transformer Relay
$1.00
  • Stock: In Stock
  • Model: PCS-978(No Ref. Price)
This product is customized according to User Requirement , the above price is for reference, please contact us.

Overview:

PCS-978 provides full scheme protection and control solution for varies type power transformers including multiple-winding transformers and auto-transformers, as well as shunt reactors. It integrates up to 36 current/voltage inputs in order to be suitable for applications like one-and-a-half breaker or ring breaker arrangements. Up to 6 group CT inputs are included in current differential protection. In addition, 288 vector groups are available for 3-winding transformers, as well as 24 vector groups, which available for 2-winding transformer.

The unique current differential protection includes conventional phase current differential elements and innovative DPFC differential elements, in effort to provide reliable and secure protection and to ensure the safety of vital assets. To improve the reliability of mechanical protection, dedicated high-threshold binary inputs are designed for mechanical protection. In addition, automatic CT ratio compensation and vector group compensation are provided to eliminate the external interposing CTs.

The PCS-978 is compatible with IEC 61850 station bus and process bus applications. It supports IEC 61850-8-1 MMS, GOOSE and IEC 61850-9-2 Sampled Value. Additionally, a RJ- 45 faceplate port is provided for testing and setting in order to make commissioning and maintenance easier.

 

Protection and Control:

  • Transformer biased current differential protection (87T)

  • Transformer unrestrained instantaneous current differential protection (87T)

  • Transformer biased DPFC current differential protection (87T)

  • Reactor biased current differential protection (87R)

  • Reactor unrestrained instantaneous current differential protection (87R)

  • Reactor biased DPFC current differential protection (87R)

  • 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)

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

  • Overexcitation protection (24)

  • Underfrequency and overfrequency protection (81U/81O)

  • Mechanical protection (MR)

  • Temperature protection (26)

  • Two-stage phase-to-phase impedance protection (21P)

  • Two-stage phase-to-ground impedance protection (21G)

  • Power swing blocking releasing (PSBR)

  • Four-stage phase overcurrent protection (50/51P)

  • Four-stage neutral overcurrent protection for each side(50/51G)

  • Two-stage negative-sequence overcurrent protection (50/51Q)

  • Two-stage phase overvoltage protection (59P)

  • Two-stage residual overvoltage protection (59G)

  • Four-stage undervoltage protection (27P)

  • Thermal protection (49)

  • Breaker failure protection (50BF)

  • Pole disagreement protection (62PD)

  • Phase overcurrent alarm (51PAlm)

  • Residual overvoltage alarm (59GAlm)

  • Voltage and current drift auto adjustment

  • Frequency tracking

  • Transformer biased current differential protection (87T)

  • Transformer unrestrained instantaneous current differential protection (87T)

  • Transformer biased DPFC current differential protection (87T)

  • Reactor biased current differential protection (87R)

  • Reactor unrestrained instantaneous current differential protection (87R)

  • Reactor biased DPFC current differential protection (87R)

  • 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)

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

  • Overexcitation protection (24)

  • Underfrequency and overfrequency protection (81U/81O)

  • Mechanical protection (MR)

  • Temperature protection (26)

  • Two-stage phase-to-phase impedance protection (21P)

  • Two-stage phase-to-ground impedance protection (21G)

  • Power swing blocking releasing (PSBR)

  • Four-stage phase overcurrent protection (50/51P)

  • Four-stage neutral overcurrent protection for each side(50/51G)

  • Two-stage negative-sequence overcurrent protection (50/51Q)

  • Two-stage phase overvoltage protection (59P)

  • Two-stage residual overvoltage protection (59G)

  • Four-stage undervoltage protection (27P)

  • Thermal protection (49)

  • Breaker failure protection (50BF)

  • Pole disagreement protection (62PD)

  • Phase overcurrent alarm (51PAlm)

  • Residual overvoltage alarm (59GAlm)

  • Voltage and current drift auto adjustment

  • Frequency tracking

 

Monitoring and Metering:

  • CT failure supervision

  • VT failure supervision

  • Self diagnostic

  • Event recorder including 1024 change-of-binary-input events, 1024 supervision events and 1024 device logs

  • Disturbance recorder including 32 disturbance records with waveforms (The format is compatible with COMTRADE.)

  • Clock synchronization using IRIG-B, SNTP, PPS (Pulse-Per- Second), PPM (Pulse-Per-Minute) and IEEE 1588

 

Communication:

  • Optional two or four 10Base-T/100Base-TX copper Ethernet ports using IEC 61850, DNP3.0 or IEC 60870-5-103 over TCP/IP

  • Optional two 100Base-FX optical Ethernet ports using IEC 61850, DNP3.0 or IEC 60870-5-103 over TCP/IP ( Sharing two copper Ethernet ports)

  • Optional two RS-485 serial ports using IEC 60870-5-103

  • One RS-485 serial port for clock synchronization

  • One RS-232 rear port for printer

  • One faceplate RJ45 port for testing and setting

  • Optional Sampling value and GOOSE communication module with six optical Ethernet ports using IEC 61850-9-2 and IEC 61850-8-1 GOOSE

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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.