Integrated Transformer Test Bench

HM5050 integrated transformer test bench is customized for power transformer in rated capacity 50kVA to 5000kVA, in voltage 6, 11, 24, 36kV/380V, and impedance ≤4~8% . The Tested items included transformer no-load/load test, temperature rise test, power frequency withstａnd voltage test, and induced withstａnd voltage test .

It’s with intelligent control, perfect protection, stable performance, easy to operate and maintenance.

Remark

1.Running time for power frequency withstａnd voltage test is 1 minute.

2.Running time for temperature rise test is 24 hours .

3.Induced voltage test is designed for 50kVA to2500kVA power transformer, and , and all other test are for 50kVA to 5000kVA power transformer.

HM5050 integrated transformer test bench is in split structure, which is composed of three parts : automatic console, variable boost system and ac oil-filed test transformer . The variable boost system include 3-phase inductive voltage regulator, 3-phase isolated step-up transformer, standard current transformer, standard voltage transformer and multiple frequency generator .

Wiring output from step-up voltage transformer/variable boost system to tested object . Through the voltage/current transformer on step-up voltage transformer/variable boost system, the voltage and current value of the tested product is collected to the intelligent console, and available to measure, monitor and save the test cu rent and voltage on LCD display of the intelligent console.

1. 3-phase Inductive Voltage Regulator

Non-contact magnetic induced and isolated voltage regulator, worm gear and worm stepping motor mechanical drive to adjust the voltage output, and adjustable thickness to ensure accurate output

2.Three-phase step-up voltage transformer

The step-up voltage transformer is in fully insulated structure, T3 copper wire and cold rolled silicon steel plate.The transformer adopts double coil, low voltage input coil and high voltage output coil.Between low and high voltage, low voltage and iron core, place electrostatic shielding.Magnetic coupling between high and low winding, no electrical connection.

3.Multiple frequency generator

The multiple frequency generator is powered by three-phase AC, and the coaxial intermediate frequency engine is driven by the industrial frequency squirrel cage motor. It provides three-phase AC power supply in frequency 150Hz and voltage 0-800V .

4.No-load/load tester

For single-phase or three-phase power transformer, can measure the voltage RMS, Rectified Mean voltage, current RMS, active power, power factor and frequency,ａnd other parameter . Accuracy class of 0.5 .Intelligent, professional design, suitable for power transformer no-load, load, induction and other tests.

5.AC oil-filled test transformer

The iron core is single-phase core, which is made of high quality cold rolled oriented silicon steel sheet. Steel is used as clamp in fastening mode. The high voltage coil is cylinder multi-layer tower, made of high quality polyester enameled wire and insulating material in high pressure value.Low voltage coil is outside, instrument coil is an independent winding, generally 100V.The shell is octagonal and fitted with movable iron wheels. It’s in light weight, small size, easy to move, superior performance and so on.

6.Intelligent automatic console

Control LCD sampling industrial computer,sampling signal board is passive signal converter, multistage isolated shielding protection,completely eliminate the destructive impact of breakdown voltage and current back to control power supply.The set parameter keep permanently even power failure, test data storage 500 times for easy access to print.

1）15.6 inch LCD touch screen display, man-machine interface, Mitsubishi PLC control, can print test data.

2）High precision sensor, Mitsubishi high performance AD analog module, resolution up to 32000.

3）Automatic and manual current-up test are optional, flexible and simple operation.

4）Real-time display of power voltage, power current, output voltage and current from voltage regulator, and display test voltage, test current and test time display function, test results,intuitive and clear test result.

5）Perfect over-current protection, set the target output current value, current upper limit and withstａnd current time arbitrarily.

6）The output current can be adjusted by setting the three-phase average value arbitrarily.

7）With back zero detection function, test can be carried out after back zero is confirmed, safe and reliable.

8)Automatically current withstａnd timing after reaching the target output current. The current can be adjusted automatically during timing,to ensure test current is within required range.The voltage regulator motor returns to zero automatically after timing over.

1. HM305E Transformer Parameter Tester

2.HM-TSJA-400 Three-Phase Inductive Voltage Regulator 1set

Rated capacity：400kVA

Rated input voltage：3-phase 380V/50Hz

Rated input current：607.7A

Rated output voltage：3-phase, 25~650V/50Hz

Rated output current：355.3A

3.HM-GLBY-400 Three-phase Isolated Step-up Transformer 1set

Rated capacity：400kVA

Rated input voltage: 3-phase 650V/50Hz

Rated input current：355.3A

Rated output voltage：3-phase, 500/1000/2000/3000V/50Hz

Rated output current：461.8/230.9/115.4/76.9A

4.Standard Current Transformer

4.1 500/5 standard current transformer 3pcs

Rated voltage：3kV

Rated primary current：500A

Rated secondary current：5A

Measurement accuracy：0.2%

4.2. 250/5 standard current transformer 3pcs

Rated voltage：3kV

Rated primary current：250A

Rated secondary current：5A

Measurement accuracy：0.2%

4.3. 150/5 standard current transformer 3pcs

Rated voltage：3kV

Rated primary current：150A

Rated secondary current：5A

Measurement accuracy：0.2%

4.4. 100/5 standard current transformer 3pcs

Rated voltage：3kV

Rated primary current：100A

Rated secondary current：5A

Measurement accuracy：0.2%

4.5. 50/5 standard current transformer 12pcs

Rated voltage：3kV

Rated primary current：50A

Rated secondary current：5A

Measurement accuracy：0.2%

5.Standard Current Transformer

5.1 . 3000/100 standard voltage transformer 3pcs

Rated voltage：3kV

Rated primary voltage：3000V

Rated secondary voltage：100V

Measurement accuracy：0.2%

5.2.1000/100 standard voltage transformer 3pcs

Rated voltage：3kV

Rated primary voltage：1000V

Rated secondary voltage：100V

Measurement accuracy：0.2%

6.HM-YDJ-30/100 Oil-filled AC Test Transformer

Capacity : 30kVA

Input voltage: AC 400V

Input current : 75A

Output voltage : AC 100kV

HV output current: 0.3A

7.HM-FZW-60-800 Multiple Frequency Generator

Rated capacity：50kW

3-phase rated input voltage：380V/50Hz

3-phase rated input current: 75.9A

Rated output voltage：0-800V/150Hz

Rated output current：0-36A

Frequency： 150Hz

Phase： 3

Advantages

● Use 240 x 64 (built-in with 320 * 240) lattice with backlight LCD screen, Also showed single-phase or three-phase 18 parameters, including voltage RMS, Rectified Mean voltage,current RMS and active power, power factor and frequency, and other parameter.

● More screen menu operation, easy to operate, and automatically calculate the parameters, Such as P0、I0、Pkn、Pk75(120)℃、ekt、ek75℃、Zk。

● Automatic correction of voltage amplitude, waveform and temperature。

● Can use the button to set the voltage and current transformer ratio. The primary measuring value is displayed directly.

● Experimental date, transformer factory number can be set up, and power can be latched。

● Measurable range of low power factor and power。

● Equipped with print interface and computer serial RS232 port. In acco- rdance with requirements of the standard format to print format.

● Strong anti-jamming performance, overload alarm indicator function, and has reliable over voltage, over current protection, suitable for field work environment.

Introduction of the principle

HM305E electric parameter measuring instrument adopts advanced microcomputer digital processing technology, Implements all the parameters measured at the same time. The machine work stable and reliable，The principle diagram of the box is as follows：

Chart 1schematic diagram

Three-phase voltage UA, UB, UC by partial pressure resistance, Three phase current IA, IB, IC sampling signal by high-precision current transformer.

Eectric parameter measuring instrument, Also showed single-phase or three-phase 18 parameters.

Operation Method

There are two states for the operation of the device: the parameter setting state and measuring state. Press the “SET" key to enter into the setting state which will be displayed by the flickering cursor (square) on the screen; press the enter key “←┘" to exit the setting state and go back to the measuring state. The setting state comprises 13 keys which are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, “." ←, and ←┘; the measuring state comprises six keys which are No+, No-, MENU+, MENU-, STOP and PRINT.

Turn on the power of the device and the LCD screen will display in the format of Menu 1. If the parameters are not set, press the MENU+ and Menu 2 will be entered; press the MENU- and Menu 4 will be entered. If the parameters are to be set (input), press the “SET" key to enter into the parameter setting state, and then the cursor 1 of “No" will flicker; press the numric keys to input the number of the transformer; continuously press the “SET" key and the flickering cursor will move in the order of year, month, day, S, Un,…; press the enter key “←┘" to exit the setting state and the flickering cursor will disappear.

After entering into the screen Menu 2, press the “SET" key to enter into the parameter setting state, then the cursor 1 of the “UN" will flicker; press the numeric keys to input the numerical value; continuously press the “SET" key and the flickering cursor will move in the order of IN, Um, Im, Un, In, RH, Rm and RL; press the enter key “←┘" to exit the setting state and the flickering cursor will disappear.

After entering into the screen Menu 3, press the “SET" key to enter into the setting state, then the cursor 1 of the current multiplying power Ik will flicker; press the numeric keys to input the multiplying power; continuously press the “SET" key to conduct according to the cycle of Ik, Uk and No; press the “←┘" key to exit the setting and enter into the mearing state.

Afte entering into the screen Menu 4, press the “SET" key to enter into the setting state. The setting order is pursuant to the cycle of Ik, Uk and No. Press the “←┘" key to exit the setting and enter into the measuring state.

Under the following menus, if in the measuring state, press the “No+" key and the number of the transformer will automatically add “1" to the original number; press the “No-" and the number of the transformer will automatically subtract “1" from the original number. Press the “STOP" key and the instantaneously displayed data will be locked.

Under the measuring state, press the “PRINT" key and the printer will print the data and tables out in the prescribed form.

Packing List

1. Automatic Console 1set

2. Variable boost system 1set

3. 30/100 AC oil-filled Test Transformer 1 set

4. Power cord 1set

5. Wire between Console and Variable boost system 1set

6. Wire between Console and Oil-filled Test Transformer 1set

5. Grounding wire 1 set

6. Operation Manual 1pc

7. Factory test report 1pc