10kVA Completely Self-protected(CSP) Single Phase Pole Mounted Transformer

Technical Specifications

10kVA Completely Self-protected(CSP) Single Phase Pole Mounted Transformer

Technical Specifications

Customization Optional

10kVA Completely Self-protected(CSP) Single Phase Pole Mounted Transformer

ZiSheng's Completely Self-Protected (CSP) Single-Phase Pole-Mounted Transformers offer a range of customizable features to meet diverse operational needs. These transformers support multiple tap configurations, including two 2.5% taps above and below nominal voltage, four 2.5% taps below nominal, NEMA® standard taps, or custom-designed options. For user convenience and safety, externally operable tap changer switches enable voltage adjustments without opening the transformer.
To accommodate various system voltages, NPC ELECTRIC provides dual voltage primary windings with externally operable multiple voltage switches, ensuring safe and efficient selection. In corrosive environments, durable options include 304 or 409 stainless steel for hardware and transformer tanks, enhancing longevity. Birdguards can be installed to prevent avian interference, improving reliability.
For environmentally conscious solutions, CSP transformers can be filled with Envirotemp™ FR3™ fluid, a biodegradable, less flammable alternative to conventional insulating oils. The transformer covers feature a minimum dielectric strength of 15 kV, ensuring superior insulation and protection. Porcelain low-voltage bushings further enhance electrical connection reliability.

Designed to comply with various international standards, NPC ELECTRIC CSP transformers meet global operational requirements. Additional customizable features include drain/sampling valves for fluid testing, pressure vacuum gauges for internal pressure monitoring, filter press connections for oil purification, temperature gauges for operational oversight, and liquid level gauges to maintain optimal fluid levels.
Engineered to exceed DOE efficiency standards, these transformers promote energy savings and reduced operational costs. By integrating advanced protection, efficiency, and durability features, NPC ELECTRIC ensures that each CSP Single-Phase Pole-Mounted Transformer is tailored to specific application demands.

Packing and Shipping

10kVA Completely Self-protected(CSP) Single Phase Pole Mounted Transformer

ZiSheng ELECTRIC transformers are designed to be securely packaged for sea freight transport, ensuring safe delivery across long distances. For this purpose, we offer wooden crate packaging that meets international shipping standards, protecting the transformer from potential damage during transit.
The sea freight wooden crates are made from high-quality, durable wood, treated to prevent moisture damage, corrosion, and pests. The crate is also reinforced to withstand the rigors of sea transport, offering superior protection from shocks and vibrations.
To enhance safety and security, the transformer is securely mounted inside the crate with anti-shift supports. This prevents any movement during transit, reducing the risk of mechanical damage. Additionally, the crate is equipped with strong, secure fastening systems to keep the transformer in place.
We ensure that all wooden crates are fully compliant with international shipping regulations, including ISPM 15 standards, to prevent any issues with customs and quarantine procedures. This makes our packaging solution both reliable and cost-effective for global shipments.
In addition to robust packaging, we provide comprehensive shipping insurance for every transformer. This insurance covers potential risks during transit, such as damage, theft, or natural disasters. By offering this coverage, we ensure peace of mind for our clients, knowing their valuable equipment is protected throughout its journey.
Whether shipping to overseas projects or international clients, our wooden crate packaging, coupled with shipping insurance, guarantees that your transformer arrives in perfect condition, ready for installation. With careful design and attention to detail, we prioritize the safety, security, and integrity of your equipment throughout the shipping process.

Manufacturer Test

10kVA Completely Self-protected(CSP) Single Phase Pole Mounted Transformer

Progress Test

During early manufacturing of the 10kVA CSP single phase pole mounted transformer, progress tests prioritize core interlacing validation, inspecting grain-oriented silicon steel for precise stacking, insulation continuity, and low-loss characteristics via epstein frame to meet efficiency benchmarks. Winding checks confirm conductor uniformity and insulation layering with incremental hipot testing to detect anomalies early. DC resistance on HV and LV windings measures at ambient using micro-ohmmeters, ensuring conformance within 0.5%. Preliminary turns ratio across taps uses ratio bridges for accuracy better than 0.3%. Core clamping torque validates structural integrity, and vibration simulation assesses transport resilience. Oil quality sampling verifies dielectric strength above 30kV and low contaminants. Tank weld inspections apply penetrant and ultrasonic for hermetic seals, while pole hanger brackets and CSP mounting features undergo load/dimensional verification. All results support digital quality tracking for ongoing adjustments.

Design Tests

All transformers will be tested after finishing the production, test items as follows:
♦ Insulation Power Factor
♦ Ratio, Polarity, and Phase Relation
♦ Winding Resistance
♦ Impulse Tests
♦ On load Loss Test
♦ No Load Loss Test
♦ Leak Test
♦ DC Insulation Resistance Test
♦ Transformer Turns Ratio/TTR (All Tap Voltages)
♦ Impedance Voltage & Load Loss (Rated Voltage)
♦ Induced Voltage
♦ Lightning Impulse
♦ Insulation Resistance (Rated Voltage)
♦ Temperature Rise
♦ Dielectric Withstand (Hipot)

Transformer Factory Acceptance Test

ZiSheng Electric will have tests made for quality control by the manufacturer on every device or representative samples, or on parts or materials as required, to verify during production that the product meets the design specifications.
The Transformer Factory Acceptance Test (FAT) for the 10kVA Completely Self-Protected (CSP) Single Phase Pole Mounted Transformer is a critical step to verify that the transformer meets all design and performance specifications before shipment.
During the FAT, the transformer undergoes a series of tests, including checks for input and output voltage, load performance, and the proper functioning of built-in protection mechanisms such as overcurrent, short-circuit, and overload protection.
Additionally, insulation resistance and dielectric strength tests are performed to ensure the transformer's electrical safety and reliability. The self-protection system is also tested to confirm it operates effectively in fault conditions, automatically disconnecting the transformer to prevent damage.
Successful completion of the FAT ensures that the transformer is fully compliant with quality standards and ready for safe and efficient operation in the field.

Routine Test - Polarity 1-Ph

Purpose of Testing

The purpose of testing the polarity of a single-phase transformer is to ensure that the primary and secondary windings are correctly oriented, preventing issues like improper phase connection. It also verifies that the transformer operates safely and efficiently in the intended electrical system.

Testing Equipment

Test equipment: Polarity Tester (e.g. Megger, Hioki, etc.)
Voltage source: usually 500 V, 1000 V or customized as needed
Environmental monitoring: Temperature and humidity meter (records ambient temperature and humidity)

Pre-Test Preparation

Disconnect the device from the power supply and ensure that it is properly grounded and discharged.
Check the connection terminals and wiring to ensure that there is no looseness or contamination.
Test under suitable environmental conditions: relative humidity less than 75% and no rain (recommended temperature: 20-30°C).

Test Progress

Connect the Test Instrument:
Connect the test equipment to the bushing or terminal of the device under test and ensure proper grounding.
Apply Test Voltage:
Select the appropriate test voltage according to the rated voltage of the device. For single-phase systems, the applied voltage should comply with the equipment specifications (such as 220V or 380V, etc.).

Measure and Record

Start the test and record the following parameters:
Phase sequence: Confirm whether the phase sequence of the power supply is correct.
Polarity: Check whether the wiring meets the predetermined polarity (positive and negative terminals are connected correctly).
Voltage: The actual voltage value during the test.

Temperature Correction

Measure different wiring points (such as input and output) for comparative analysis to ensure that the electrical polarity is consistent.

Repeat Testing (if necessary)

If necessary, correct the measured parameters to the reference temperature (usually 20°C) to ensure the accuracy of the test results.

Evaluation Criteria (Reference)

Correct polarity: The wiring meets the expected polarity requirements and meets the standard. Reverse polarity: If reverse polarity occurs, it should be corrected immediately and retested. Polarity uncertainty: If there is any uncertainty, further check the power supply and wiring configuration.

*These comprehensive tests ensure that each transformer meets performance standards and operates reliably under various conditions.

Application

Well-suited for light rural commercial and utility extensions paired with basic loads, this 10kVA CSP single phase pole mounted transformer supports security lighting, pumps, small workshops, or signage, delivering reliable, fully protected distribution in sparse areas with enhanced safety and reduced need for external devices.