Haefely VTM 15000 Impulse Transformer for Insulation Testing
Description
The VTM 15000 is used for insulation testing with 1.2/50us voltage impulses.
The VTM 15000 runs together with a combination wave generator such as PIM 100 or PSURGE 4010. The output voltage of the generator is doubled; the voltage wave shape remains the same. The current wave shape is not defined any more.
For insulation testing a VTM 15000 and a combination wave generator can be used. The lightning impulse is the most common impulse shape for testing insulations. No flash over should occur during testing.
It is important to keep the load capacitance below the given maximum for having a proper impulse shape at the output of the VTM 15000. When the maximum load capacitance is exceeded one or more impulse parameters may be out of tolerance.
The PSURGE 8000 Surge Platform and the PSURGE 4010 combination wave generator provide all the programming functions required to perform IEC, ANSI and UL testing also without the need of a control computer.
The generators are integrated in the WinFEAT&R control and reporting software package. This enhances an efficient set-up and operation of this test system.
Features
- 1.2/50us voltage impulse
- output amplitude up to 15kV
- Source impedances 12 Ohm, 40 Ohm and 500 Ohm
- Separate Output for each source impedance
- Floating output
Applications
- Insulations
- Creepage distances
- Clearances
- Many IEC, ANSI, UL & EN Product standards
- Other international requirements for voltage impulses
Specifications
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Turns Ratio |
1:2 |
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Impulse shape |
1.2ms / 50ms |
voltage impulse (lightning impulse) |
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Output impedances |
12 Ohm |
Load capacitance ≤200pF, Load resistance ≥5kOhm |
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40 Ohm |
Load capacitance ≤300pF, Load resistance ≥5kOhm |
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|
500 Ohm |
Load capacitance ≤600pF, Load resistance ≥50kOhm |
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|
Output Voltage |
up to 15kV |
with a 7.5kV source, e.g. PIM 100 |
|
up to 8.4kV |
with a 4.2kV source, e.g. PSURGE 4010 or ECOMPACT 4 |
|
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Impulse Output |
HIGH |
Haefely HV sockets |
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COMMON |
safety banana socket |
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Protection earth |
terminal with 4mm banana socket |
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Dimensions (W x H x D |
45 x 15 x 57 cm |
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Weight |
approx. 15 kg (23 lbs) |
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