Multistep test sequences
Fifty program memories with nine steps each automate voltage, frequency, timing and limit profiles.
TH7100 – Linear AC Power Source up to 2 kW
For repeatable mains conditions in development, functional testing and automated quality control.
The linear output stage generates a sinusoidal supply without a switching power-output topology. Two voltage ranges are selected automatically according to the setpoint, while the high-voltage range can also be activated permanently. Front and rear outputs simplify changing laboratory and test-station configurations.
Surge and drop profiles
Voltage dips and surges can be positioned in time and triggered manually or cyclically.
Front and back dimming
Phase-cut output waveforms support functional testing of dimmable lighting and power-electronic assemblies.
Digital and discrete control
RS232, USB-COM, SCPI, Modbus and remote I/O support integration into automated test stations.
Personal project consultation
Do you need support selecting the right power supply? Our technical specialists will provide personal advice tailored to your application.
Select the appropriate technical configuration or access product documentation directly.
ART. NO.
Description
Current [A]
Power [P]
Voltage [V]
TH7105
|
Description
TH7105 – Linear single-phase AC source, 500 VA, 0–300 VAC, 45–500 Hz, up to 4.2 A, 2 U
|
Current [A]
4.2
|
Power [P]
500
|
Voltage [V]
300
|
Linear AC Source
Technical Data
Type of AC source
Single-phase
TH7110
|
Description
TH7110 – Linear single-phase AC source, 1,000 VA, 0–300 VAC, 45–500 Hz, up to 8.4 A, 2 U
|
Current [A]
8.4
|
Power [P]
1000
|
Voltage [V]
300
|
Linear AC Source
Technical Data
Type of AC source
Single-phase
TH7120
|
Description
TH7120 – Linear single-phase AC source, 2,000 VA, 0–300 VAC, 45–500 Hz, up to 16.8 A, 2 U
|
Current [A]
16.8
|
Power [P]
2000
|
Voltage [V]
300
|
Linear AC Source
Technical Data
Type of AC source
Single-phase
TH7100 linear AC power source overview
The TH7100 series generates programmable single-phase AC voltage for powering and testing electrical and electronic equipment. The TH7105, TH7110 and TH7120 provide rated powers of 500 W, 1,000 W and 2,000 W. The output covers 0 to 300 V AC and 45 to 500 Hz. Depending on the selected voltage range, up to 16.8 A RMS or 50.4 A peak current is available. The linear output stage is suited to applications where a sinusoidal, low-noise supply is more important than high power density. Voltage, frequency and turn-on or turn-off phase are programmable. The instruments simultaneously acquire voltage, frequency, RMS current, peak current, power, power factor and crest factor. Manual memories, multistep programs, surge/drop, dimmer and timer functions support repeatable functional and production testing.
Key benefits
Linear regulated output
The linear output architecture generates a sinusoidal AC supply for sensitive functional, audio, lighting and component testing.
Variable frequency range
Output frequencies from 45 to 500 Hz reproduce different mains frequencies and specialised supply conditions.
Fine voltage programming
Voltage is programmed and read back across the complete output range with 0.1 V resolution.
Non-linear loads
A crest factor of at least 4 supports loads with pronounced current peaks, including rectifier and switch-mode power-supply inputs.
Short response time
The specified response time of less than 100 µs supports rapid changes in electrical load conditions.
Integrated power analysis
Voltage, current, peak current, power, power factor and crest factor are measured directly at the output.
Linear AC power-source operating principle
The instruments generate a single-phase output voltage between line and neutral. The setpoint can be regulated within two operating ranges. In AUTO mode, the instrument automatically selects the range up to 150 V or 300 V according to the programmed voltage. HIGH mode keeps the complete 300 V range active.
Automatic range selection
The output selects the appropriate voltage range and provides the higher model current in the low-voltage range.
Fixed high-voltage range
HIGH mode keeps the 300 V range active and prevents automatic range switching during a test.
Defined switching phase
Turn-on and turn-off phase can be programmed independently between 0 and 359°.
Current-limited operation
Over-current fold reduces voltage as the load increases and limits output current at the programmed value.
Models and technical power ratings
Model selection is based on rated power and required output current. Below 150 V, each model provides twice the RMS current available across the complete 300 V range.
| Model | Rated power | RMS current at 0–150 V | RMS current at 0–300 V | Peak current at 0–150 V | Peak current at 0–300 V |
|---|---|---|---|---|---|
| TH7105 | 500 W | 4.2 A | 2.1 A | 12.6 A | 6.3 A |
| TH7110 | 1,000 W | 8.4 A | 4.2 A | 25.2 A | 12.6 A |
| TH7120 | 2,000 W | 16.8 A | 8.4 A | 50.4 A | 25.2 A |
| Output specification | Series value | Condition |
|---|---|---|
| Output voltage | 0 to 300 V AC | Single-phase, line to neutral |
| Output frequency | 45 to 500 Hz | 0.1 Hz resolution below 100 Hz and 1 Hz from 100 Hz |
| Phase configuration | Single-phase, two-wire | Line and neutral |
| Crest factor | ≥4 | Within the specified output limits |
| Load regulation | ≤0.5% | Resistive load |
| THD | ≤0.5% | Resistive load, 80–140 V in the low range or 160–280 V in the high range |
| Response time | <100 µs | Series output specification |
Programming and measurement accuracy
| Parameter | Range or resolution | Accuracy |
|---|---|---|
| Voltage programming | 0 to 300 V / 0.1 V | ±(0.5% of setpoint + 2 digits) |
| Voltage measurement | 0 to 300 V / 0.1 V | ±(0.5% of reading + 2 digits) |
| Frequency programming | 0.1 Hz below 100 Hz; 1 Hz from 100 Hz | ±0.02% |
| Frequency measurement | 0.1 Hz below 100 Hz; 1 Hz from 100 Hz | ±0.1 Hz |
| RMS current measurement | 0.001 A | ±(0.5% of reading + 5 digits) |
| Peak-current measurement | 0.01 A | ±(5% of reading + 2 digits) |
| Power measurement | 0.1 W up to 1,000 W; 1 W above 1,000 W on the TH7120 | ±(0.6% of reading + 5 digits) |
| Power factor | 0.001 to 1.000 / 0.001 | ±(2% of reading + 2 digits) |
| Turn-on and turn-off phase | 0 to 359° / 1° | ±1° at 45 to 65 Hz |
A warm-up period of at least 30 minutes should be allowed before accurate measurements are performed.
Dynamic behaviour and timed output profiles
The response time of less than 100 µs describes dynamic output behaviour and is separate from programmable ramp timing. Controlled tests can define voltage rise, voltage fall, evaluation delay and dwell duration independently.
| Timing parameter | Programming range | Function |
|---|---|---|
| Ramp-up | 0.1 to 999.9 s | Controlled increase from 0 V to the programmed voltage. |
| Ramp-down | 0.1 to 999.9 s | Controlled decrease from the programmed value to 0 V. |
| Delay time | 0.1 to 999.9 | Delay before limit evaluation, with seconds, minutes or hours as the selected unit. |
| Dwell time | 0.1 to 999.9 | Duration of a program step, with seconds, minutes or hours as the selected unit. |
| Manual-mode timer | Up to 99:59:59 | Automatic output shutdown when the programmed time expires. |
Operating modes and programmable test functions
| Function | Configuration | Typical use |
|---|---|---|
| Manual operation | Fifty memories containing voltage, frequency, current limits and additional parameters | Rapid switching between recurring individual tests and supply configurations. |
| Program operation | Fifty memories with nine steps each plus step, memory and overall loops | Automated multistep mains, functional and load testing. |
| Surge/drop | Alternative voltage, start position, duration and manual or continuous triggering | Testing responses to short overvoltage and voltage-dip events. |
| Front dimming | Leading-edge phase cut from 45 to 100 Hz | Simulation of leading-edge dimmers and phase-cut supplies. |
| Back dimming | Trailing-edge phase cut from 45 to 100 Hz | Simulation of trailing-edge dimmers and electronic lighting systems. |
| Limit testing | Upper and lower limits for voltage, frequency, current, peak current, power and power factor | Automatic pass/fail evaluation during production and quality testing. |
| Data hold | Maintains the active output condition | Focused analysis of a test point during an active procedure. |
The special output waveform is not evaluated by the internal measurement display while dimmer mode is active. The waveform remains available at the power output.
Typical applications
Variable voltage and frequency support powering, functional testing and limit evaluation of single-phase equipment under normal and abnormal mains conditions.
Motors and transformers
Variable voltage and frequency test operating behaviour, current consumption and power values of single-phase wound components.
Lighting and dimmers
Front and back dimming profiles test luminaires, drivers, ballasts and dimmable power supplies.
Power supplies and electronic assemblies
Power, communication, audio, video and monitoring equipment can be operated under different voltage and frequency conditions.
International mains conditions
Programmable setpoints reproduce different single-phase supply voltages and mains frequencies for export and product-variant testing.
Electromagnetic-compatibility test setups
Defined AC conditions supply devices and supporting equipment within suitable EMC test configurations.
Aerospace and defence testing
The extended frequency range supports single-phase equipment and assemblies using supply conditions that differ from public mains networks.
Production and end-of-line testing
Sequences, limits and discrete pass/fail signals enable repeatable automated functional tests.
Interfaces, data storage and automation
| Interface or function | Implementation | Integration benefit |
|---|---|---|
| RS232 | Standard, 4,800 to 115,200 baud | Serial remote control and measurement queries from a system controller. |
| USB Device / USB-COM | Standard virtual serial interface | PC communication using the same command structure as RS232. |
| USB Host | Standard front-panel interface | Storage and transfer of settings and results plus instrument firmware updates. |
| SCPI | Through RS232 or USB-COM | Remote control of output, operating mode, setpoints, sequences, limits and measurement queries. |
| Modbus | Through RS232 or USB-COM, device addresses 1 to 31 | Register-based integration into PLC and automated test systems. |
| Remote input | Output on/off and memory selection from M1 to M7 | Discrete control without continuous bus communication. |
| Remote output | Isolated relay signals for PASS, FAIL and PROCESSING | Feedback to fixtures, PLCs, sorters and production controllers. |
| Synchronisation output | 10 V signal through BNC | External acquisition of the active output state. |
| Internal memory | Fifty manual groups and fifty program groups with nine steps each | Repeatable procedures without re-entering every parameter. |
| Measurement queries | Voltage, current, power, peak current, power factor and crest factor | Central evaluation and logging within customer-specific test software. |
Installation and infrastructure
| Installation specification | Value or requirement |
|---|---|
| AC input | 115/230 V AC ±15% |
| Line frequency | 47 to 63 Hz |
| Phase configuration | Single-phase |
| Maximum input current, TH7105 | 16 A at 115 V / 8 A at 230 V |
| Maximum input current, TH7110 | 30 A at 115 V / 16 A at 230 V |
| Maximum input current, TH7120 | 30 A |
| Input power factor | 0.7 |
| Operating temperature | 0 to 40 °C |
| Operating humidity | 20 to 80% RH, non-condensing |
| Storage temperature | −20 to 70 °C |
| Operating altitude | ≤2,000 m |
| Cooling | Air cooling with a two-stage temperature-controlled fan; ventilation openings must remain unobstructed. |
| TH7110 dimensions | 430 × 88 × 600 mm |
| TH7110 weight | 40 kg |
| Protective earth | A reliable line, neutral and protective-earth connection is required before operation. |
Dimensions and weight are specified for the TH7110. Model-specific installation data should be confirmed before mechanically integrating a TH7105 or TH7120.
Protection and safety functions
| Protection function | Behaviour |
|---|---|
| HI-A | An alarm is triggered and the output is disabled when RMS current exceeds the programmed upper-current limit. |
| OVP | Disables the output when the positive deviation exceeds 5 V in the low range or 10 V in the high range. |
| LVP | Disables the output when the negative deviation exceeds 5 V in the low range or 10 V in the high range. |
| OCP | Responds to a short circuit or current above 110% of rated current for one second. |
| OPP | Monitors sustained overload and short excursions exceeding 110% of rated power. |
| OTP | Increases fan speed at a heatsink temperature of 60 °C and disables the output at 130 °C. |
| Key lock | Prevents unintended changes using the front-panel controls. |
| Password protection | Can protect instrument start-up against unauthorised operation. |
Output and AC supply must be disabled before connections or wiring are changed. Leads and fixtures must be rated for the maximum short-circuit current of the selected model.
TH7100 series FAQ
Which model provides the highest output power?
The TH7120 provides up to 2,000 W, 16.8 A RMS at up to 150 V and 8.4 A RMS in the 300 V range.
Why does available current depend on the voltage range?
The range up to 150 V provides twice the RMS current available in the complete 300 V range.
Can the output frequency be changed?
Yes. Frequency is programmable between 45 and 500 Hz.
Can voltage dips be generated automatically?
Yes. Surge/drop profiles define alternative voltage, position and duration and can be triggered manually or continuously.
How extensive are the programmable sequences?
Fifty program memories with nine steps each are available together with step, memory and overall loops.
Which measurement values are acquired?
The instruments acquire voltage, frequency, RMS current, peak current, active power, power factor and crest factor.
Which communication protocols are supported?
Remote operation uses SCPI or Modbus through RS232 or USB-COM.
Is automatic pass/fail evaluation available?
Yes. Programmable limits evaluate results and provide PASS, FAIL and PROCESSING signals.
Technical consultation and project enquiry
Are you planning a test station for power supplies, lighting equipment, motors, transformers or other single-phase loads and need to define power, peak current, frequency range or test procedures?
ET System supports model selection, AC input and wiring design and integration into laboratory, ATE and end-of-line systems.
Request technical consultation