Transformer capacitance & dissipation factor measuring bridge

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Transformer capacitance & dissipation factor measuring bridge

Name: Transformer capacitance & dissipation factor measuring bridge
Brand: CANGZHOU KENUO INTERNATIONAL CO., LTD.
Price: 10000 USD
Availability: InStock

Price 10000 USD ($)/ Set

Get a Price/Quote

MOQ : 1 Unit

Transformer capacitance & dissipation factor measuring bridge Specification

Voltage Booster Type
Compatible with external voltage booster

Rated Voltage
Typical input 220V 10%, 50Hz or 110V/240V models available

Low Voltage
Low voltage input for bridge measurement circuit: 12V AC

Cooling Type
Natural air cooled / no forced cooling required

High Voltage
Test voltage capability: up to 10kV AC (external high voltage source required)

Capacity
Measurement range: Capacitance 1pF ~ 200F; Dissipation factor 0~20%

Dimension (L*W*H)
Approx. 450mm x 320mm x 230mm

Operating Temperature
-10C to +50C

Product Type
Capacitance and Dissipation Factor Measuring Bridge

Material
High grade metal chassis with insulated test terminals

Output
Capacitance in pF/F; tan and power factor (direct readout or analog indication)

Frequency (MHz)
50 Hz / 60 Hz (Mains Frequency); Measurement range typically up to 1 kHz

Efficiency
High measurement accuracy; Typical error 0.5%

Phase
Single Phase

Usage
Measurement of transformer capacitance and dissipation factor (tan delta testing) in high voltage power equipment

Coil Structure
Non-applicable (instrument does not contain windings)

Coil Number
Non-applicable

Power Scope
Operates on AC power supply; suitable for high voltage transformer testing

Weight
Approximately 12 - 18 kg (varies by model)

Power Consumption
Approx. 60 VA

Measurement Accuracy
Tan delta accuracy 0.001, Capacitance accuracy 1% of reading

Accessories Provided
User manual, calibration certification, test leads, carrying case

Calibration
Factory calibrated with calibration certificate provided

Internal Impedance
Optimized for minimal interference and stable bridge operation

Display Type
Digital panel with LED indicators and analog meter

Application
Routine and diagnostic insulation tests on power and distribution transformers, bushings, insulators and cables

Portable
Designed as a transportable benchtop unit with carrying handle

Test Object Connection
Supplied with shielded high voltage test leads and ground cable

Environmental Protection
Painted/treated enclosure for indoor laboratory use

Safety Features
Automatic HV discharge, safety interlock, overcurrent and overvoltage protection

Tan Delta Range
0.0001 0.1000

Control Interface
Rotary selector switch for range and function selection

Transformer capacitance & dissipation factor measuring bridge Trade Information

Minimum Order Quantity
1 Unit

Supply Ability
10 Units Per Month

Delivery Time
60 Days

About Transformer capacitance & dissipation factor measuring bridge

Transformer capacitance & dissipation factor measuring bridge

Description

This different-frequency capacitance & dissipation factor tester is an up-to-date test instrument for measuring capacitance and dissipation factor (dielectric loss and impedance) of various kind of high voltage apparatus full automatically, such as transformers, cables, capacitors, insulators, HV switches, arresters, etc.

This is a high precision instrument; main power is generated by inverter inside and boosted by transformer. Frequency of main power is 45Hz and 55Hz, different to power frequency and so avoid interference by power frequency! It is also suitable for the case that power supply is by generator.

Main features

Portable type, very light weight, not more than 30kg
Equipped with big screen (240x128mm), menu displaying with relative prompts in the right side, very simple operation, no need special training.
Test result can be saved or printed out; One time operation, automatic finish all the test.
Equipped with big capacity memory and calendar CMOS chip. Test results can be saved in time/date sequence; History records can be reviewed and printed out at any time.
Equipped with wiring diagram menu inside helping operator to wire correctly.
Equipped with earth detecting to ensure reliable earthed before being stepped up.
By equipped with insulation oil cup, this instrument can also test dielectric loss of insulation oil.
Can be suitable for testing full-sealed capacitor type voltage transformer.
Inside inverter and sample circuit are all digital control, output voltage is continuous adjustable
Equipped with multi-safety protection measures for voltage fluctuation, output short-circuit, over-voltage, over-current, over-temperature, etc.

Main parameters

Service conditions	-5C ~ 40C	RH<80%
Principle of anti-jamming	varying frequency
Power supply	AC220V +/-10% (no limit on frequency)
HV output	voltage	0.5~10kV
	precision	5%
	Max. current	140mA
	Capacity	1000VA
Self-exciting power	AC 0~30V	45Hz/55Hz
	Max. current	15A
Resolution ratio	tg 0.001%	Cx: 0.1pF
Precision	tg	+/- (reading x 1.0% + 0.040%)
	Cx	+/- (reading x 1.0% +1.0pF)
Measuring range	tg	No limit
	Cx	15pF < Cx < 100000pF
		10kV	Cx < 30,000pF
		5kV	Cx < 60,000pF
		1kV	Cx < 100,000pF
	For CVT		Cx < 100,000pF
Memory size	Can store 40 units test data
Dimension	470 x 320 x 390mm (L x W x H)
Weight	30kg

Reliable and Accurate Diagnostics

Engineered for high measurement accuracy, this bridge enables professionals to evaluate insulation health in transformers and other power equipment confidently. The direct digital and analog output facilitates quick interpretation of capacitance and dissipation factor results, supporting both routine maintenance and detailed diagnostics.

User-Friendly Portable Design

The portable benchtop build, equipped with a sturdy handle and efficient control interface, allows for effortless transport and operation in laboratory or field environments. All essential accessoriesincluding shielded leads, ground cables, and a user manualpromote straightforward setup and use.

Safety and Versatility Assured

Safety is paramount, with features like automatic high-voltage discharge, safety interlocks, and overcurrent/overvoltage protection. The measuring bridge accommodates a broad range of test samples and is suitable for both AC high voltage and low voltage measurements, compliant with global testing practices.

FAQs of Transformer capacitance & dissipation factor measuring bridge:

Q: How is the transformer capacitance and dissipation factor measuring bridge used in routine testing?

A: It is used by connecting the supplied shielded high voltage test leads to the test objectsuch as a transformer, bushing, or cable. The instrument measures the capacitance and tan delta (dissipation factor), indicating insulation condition for routine and diagnostic maintenance.

Q: What accessories and calibration documentation are provided with the instrument?

A: Each unit comes with a user manual, calibration certificate, shielded test leads, ground cable, and a carrying case, ensuring thorough documentation and essential accessories for operation and compliance.

Q: When should I use this bridge for transformer testing?

A: Deploy the bridge during scheduled maintenance, commissioning, or when deteriorating insulation is suspected. It is also suitable for diagnostic assessments after transformer repairs or in response to abnormal operating conditions.

Q: Where should the measuring bridge be operated for optimal performance?

A: Operate the bridge in indoor laboratory environments, as its enclosure is designed for such conditions. The natural air cooling and rugged construction make it suitable for benchtop or on-site field use with appropriate environmental protection.

Q: What safety features are built into this device?

A: The measuring bridge incorporates automatic high-voltage discharge, safety interlock systems, and overcurrent/overvoltage protection, minimizing electrical hazards during setup and measurement.

Q: How does the digital panel benefit measurement and analysis?

A: The digital display panel, supplemented by LED indicators and an analog meter, offers clear, immediate readings of capacitance and tan delta values, allowing operators to interpret and record results swiftly and accurately.

Q: What is the process of connecting and measuring with the bridge?

A: First, ensure proper grounding using the provided cable. Attach the test leads securely to the object under test. Select the appropriate range and function using the rotary selector, then initiate the measurement. The device displays the results digitally and/or via the analog meter.

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