IEC 62368-1 Annex D.1 Impulse test generator KP1095S
KP-1950S Impulse Generator: Precise dual waveforms (10/700μs & 1.2/50μs), 0.01–6kV adjustable, PLC touchscreen control, built-in overvoltage protection – delivering efficient, reliable IEC 62368-1 Annex D.1 testing for electrical safety labs
Dual waveforms: 10/700 μs & 1.2/50 μs, fully compliant with IEC 62368-1 Annex D.1
Voltage range: 0.01–6.00 kV, 10 V resolution
Intuitive PLC + color touchscreen control, settings retained after power-off
Built-in overvoltage protection for safe & stable operation
Flexible sequences: 1–999 pulses, adjustable interval & polarity
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Impulse test generator Description
Product Purpose and Standard Compliance
IEC 62368-1 Annex D.1 specifies the requirements for impulse test generators to produce standardized surge waveforms that simulate transient overvoltages, such as those caused by lightning-induced surges on communication lines or switching transients in power distribution systems.
The standard defines two primary impulse waveforms for insulation and separation testing:
- 10/700 μs impulse (typically applied to telecommunication/network ports, e.g., to simulate lightning surges on long lines – referenced as Circuit 1 in Table D.1 of IEC 62368-1)
- 1.2/50 μs impulse (typically applied to mains or other power-related circuits – referenced as Circuit 2 or similar in related tables/figures, e.g., Figure D.1 of the standard)
impulse test generators
The KP-1950S fully supports both waveforms as required in Annex D.1, enabling manufacturers and testing laboratories to verify basic and reinforced insulation, clearances, creepage distances, and surge withstand capability in equipment rated up to hazardous voltage levels.
Main Features
- Dual-waveform capability — Supports both 10/700 μs (for telecom/network ports, e.g., RJ45, xDSL lines) and 1.2/50 μs (for mains-related insulation tests), covering the key impulse test requirements of IEC 62368-1 Annex D.1 and Figure D.1.
- Precise and adjustable output — Voltage adjustable from 10 V to 6 kV with fine 10 V resolution, allowing exact reproduction of the test levels specified in Clause 5 (e.g., 1.5 kV, 2.5 kV, 4 kV, or 6 kV depending on equipment category and port type).
- User-friendly interface — Color touchscreen with intuitive parameter setting for voltage, polarity, number of pulses, and interval.
- High reliability — PLC-based control ensures stable operation; memory function prevents parameter loss; overvoltage protection safeguards the instrument and test setup.
- Applications — Ideal for certification testing labs, quality assurance in IT/ICT/AV equipment manufacturing, and verification of surge protective devices, insulation coordination, and Clause 5.4/Annex G requirements.
KP-1065S Pulse Voltage Generator for IEC 62368-1 Annex D.2
Pulse Generator Technical
| Parameter | Specification |
|---|---|
| Applicable Standards | IEC 62368-1:2018 (Annex D.1), GB 4943.1-2022 |
| Impulse Waveform 1 (D.1 Circuit / Telecom type) | 10/700 μs (10 μs virtual front time, 700 μs virtual time to half-value) |
| Output Surge Voltage (Waveform 1) | 0.01 kV – 6.00 kV (resolution 0.01 kV) |
| Voltage Display Accuracy | ±5% ±3 digits |
| Impulse Waveform 2 (Power / Surge type) | 1.2/50 μs (1.2 μs virtual front time, 50 μs virtual time to half-value) |
| Output Surge Voltage (Waveform 2) | 0.01 kV – 6.00 kV (resolution 0.01 kV) |
| Voltage Display Accuracy | ±5% ±3 digits |
| Output Polarity | Positive or negative, freely selectable |
| Number of Tests | 1 – 999 times |
| Test Interval | Freely programmable (pulse repetition interval) |
| Control System | PLC programmable controller + color touchscreen interface |
| Parameter Memory | Retains all settings after power-off |
| Safety Features | Built-in overvoltage protection |
| Power Supply | AC 220 V ±10%, 50/60 Hz |
| Dimensions (L × W × H) | 680 × 460 × 200 mm |
| Weight | Approximately 25 kg |
Why Choose This IEC 62368 Impulse Generator?
- Direct manufacturer supply for stable quality and short lead times
- High performance-to-price ratio — matches international brands at competitive cost
- Full technical support, operator training, and traceable calibration certificates available
- Proven in helping products achieve fast, reliable safety certification and market entry
Applications
- Lightning withstand testing for communication ports of routers, switches, network cameras, etc. (10/700μs waveform)
- Transient overvoltage withstand testing for power adapters, household appliances, and audio/video equipment (1.2/50μs waveform)
- Mandatory electrical safety testing for 3C certification, CE certification, UL/CB certification, etc.
- Insulation coordination verification and reliability testing during product R&D
- Sampling inspection, batch verification, and factory outgoing inspection on production lines
Impulse test generator Video
Impulse test generator Detail Display
IEC 62368-1 Annex D.1 Impulse test generator FAQs
Q1: Which IEC 62368-1 test levels can the KP-1950S support?
A: The generator outputs up to 6 kV, covering common Annex D.1 and Clause 5 impulse test voltages such as 1.5 kV, 2.5 kV, 4 kV, and up to 6 kV (e.g., for enhanced protection on certain external circuits or reinforced insulation requirements).
Q2: What is the difference between the 10/700 μs and 1.2/50 μs waveforms?
A: The 10/700 μs waveform (Annex D.1 Circuit 1) simulates lightning-induced surges on long communication lines (e.g., telecom ports). The 1.2/50 μs waveform (Annex D.1 Circuit 2) simulates faster transients from power distribution switching or nearby lightning, typically applied to mains-related circuits or shorter lines.
Q3: Can I perform both positive and negative polarity tests automatically?
A: Yes, polarity is freely selectable (positive or negative), and you can program sequences for both polarities with adjustable test counts (1–999) and intervals.
Q4: How accurate is the output voltage, and does it meet standard requirements?
A: Display accuracy is ±5% ±3 digits, which is sufficient for compliance testing per IEC 62368-1 Annex D.1. Always verify waveform shape and levels with an oscilloscope during setup for critical certifications.
Q5: Is the KP-1950S suitable for routine (production-line) testing as well as type testing?
A: Yes, its programmable features (test count, interval, memory retention) make it efficient for both type approval (full Annex D.1 sequences) and routine electric strength/impulse checks.
Q6: What safety precautions should be taken during high-voltage impulse testing?
A: Use proper high-voltage insulation, grounding, interlocks, and barriers. The built-in overvoltage protection helps, but always follow lab safety protocols (e.g., no access during pulsing, discharge capacitors after use).
Q7: Does the generator support removal of surge suppressors during testing?
A: Yes, as per IEC 62368-1 guidance (e.g., Clause 5.4.10 or Annex G), surge protective devices like varistors can often be removed or bypassed for impulse withstand tests, provided the equipment still meets safeguards post-test.
Q8: Can the KP-1950S be used for other standards beyond IEC 62368-1?
A: While optimized for IEC 62368-1 Annex D.1, its waveforms and voltage range also align with related standards like ITU-T recommendations (for 10/700 μs) or basic surge testing in IEC 61000-4-5 (for 1.2/50 μs), though dedicated EMC generators may be preferred for full compliance to those.
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