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Generator Protection PCS-985B AW Generator-Transformer Unit Relay & Comprehensive PowerSecure 985B - Engineered for Generator-Transformer Safety

Generator Protection PCS-985B AW Generator-Transformer Unit Relay & Comprehensive PowerSecure 985B - Engineered for Generator-Transformer Safety
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Generator Protection PCS-985B AW Generator-Transformer Unit Relay & Comprehensive PowerSecure 985B - Engineered for Generator-Transformer Safety
$1.00
  • Stock: In Stock
  • Model: PCS-985B/AW (No Ref. Price)
This product is customized according to User Requirement , the above price is for reference, please contact us.

Overview:

PCS-985 generator-transformer unit protection can be applied for turbo-dynamo, gas-turbine, hydro, pumped storage and nuclear power generator with different connection modes. It supports conventional CT/VT and ECT/EVT, and provides interfaces for power plant automation.

For medium to large generator, two sets of PCS-985 protections can be used to achieve duplicated protection configuration. Two PCS-985 protections use different CT groups, and main and backup protection in one PCS-985 share one group of CTs.

PCS-985B provides complete protection scheme for a turbo-dynamo or nuclear power generator-transformer unit which usually comprises generator, main transformer, step-down transformer and exciter or excitation transformer.

PCS-985AW can be applied for large-scale hydro or pumped storage generator-transformer unit with different connection modes.

 

Current Differential Protection:

  • Current differential protection of generator-transformer unit (87GT)
  • Current differential protection of generator (87G)
  • Current differential protection of main transformer (87T)
  • Current differential protection of step-down transformer (87T)
  • Current differential protection of excitation transformer or exciter (87E)

 

Generator Protection:

  • Phase segregated transverse differential protection (87STG)
  • Incomplete current differential protection (87IG)
  • High sensitive neutral point transverse differential protection (87NTG)
  • Generator inter-turn protection (59NIT)
  • Phase-to-phase impedance protection (21)
  • Voltage controlled overcurrent protection (50/51P)
  • Fundamental zero-sequence voltage stator ground fault protection (64S1)
  • Generator 3rd harmonic stator ground fault protection (64S2)
  • Generator stator ground fault protection with 20Hz voltage injection (64SInj)
  • Generator Ping-Pang type rotor ground fault protection (64R)
  • Rotor ground fault protection with low-frequency square-wave voltage injection (64RInj)
  • Stator overload protection (49S)
  • Excitation winding overload protection (49E)
  • Generator inadvertent energization protection (50/27)
  • Generator out-of-step protection (78)
  • Generator reverse power protection (32R)
  • Low forward power protection (32F)
  • Generator shaft overcurrent protection (51GS)
  • Overexcitation protection (24)
  • Loss-of-excitation protection (40G)
  • Overvoltage protection (59)
  • Undervoltage protection (27) .
  • Underfrequency protection (81U)
  • Overfrequency protection (81O)
  • Negative-sequence overload protection (46G)
  • Generator startup and shutdown protection (StShut)
  • Breaker failure protection (50BF)
  • Voltage balance protection (60)

 

Main Transformer Protection:

  • Transformer restricted earth fault protection (64REF)
  • Phase overcurrent protection of HV side (50/51P)
  • Phase-to-phase impedance protection of HV side (21)
  • Ground overcurrent protection of HV side (50/51G)
  • Gap zero-sequence overvoltage/overcurrent protection of HV side.
  • Overexcitation protection (24)
  • Pole discrepancy protection of HV side (62PD)
  • Breaker flashover protection (50F)
  • Zero-sequence voltage alarm of LV side (59G) 
  • Overload alarm
  • Initiating cooling

 

Excitation Transformer/Exciter Protection:

  • Overcurrent protection (50/51P)
  • Overcurrent protection includes two stages used as backup protection. 

 

Step-down Transformer Protection:

  • Voltage controlled overcurrent protection of HV side (50/51P)
  • Voltage controlled overcurrent protection of two branches of LV side (50/51P)
  • Residual overcurrent protection of two branches of LV side (50/51G)
  • Overload alarm
  • Initiating cooling

 

Miscellaneous:

  • Mechanical protection (MR)
  • Fault detector (FR)
  • Voltage and current drift auto adjustment.
  • VT circuit supervision (VTS)
  • CT circuit supervision (CTS)
  • Self diagnostic
  • GPS clock synchronization
  • Fault recorder
  • IEC61850 MMS & GOOSE for station bus
  • IEC60870-5-103 protocol
  • MODBUS protocol

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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.