\n| Coupling modes<\/td>\n | L-N, L-PE, N-PE, L-L<\/td>\n | \u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nApplicable Standards and Test Level Selection Across Industry Domains<\/h2>\nThe IEC 61000-4-5 standard defines multiple test severity levels, each corresponding to a specific combination of surge voltage and source impedance. Level 1 (0.5 kV) applies to well-protected environments with limited exposure to external transients, such as controlled laboratory instrumentation. Level 2 (1.0 kV) represents partially protected installations, including household appliances and office equipment. Level 3 (2.0 kV) covers typical industrial environments with moderate exposure to power line disturbances. Level 4 (4.0 kV) addresses harsh environments with direct exposure to lightning-induced surges, such as outdoor lighting systems and telecommunications infrastructure. The LISUN SG61000-5 supports all standard levels, along with user-defined custom amplitudes for specialized testing protocols.<\/p>\n Different industries mandate distinct test levels based on the anticipated operational environment and risk tolerance. For lighting fixtures, particularly those used in outdoor street lighting or tunnel illumination, EN 61547 and IEC 61547 require surge immunity up to 4 kV line-to-line and 6 kV line-to-ground, reflecting exposure to direct or indirect lightning strikes. Industrial equipment governed by IEC 61800-3 for variable-speed drives typically specifies level 3 or 4, given the prevalence of switching transients from motors and contactors. Household appliances under IEC 60335-1 often require level 2 or 3, while medical devices per IEC 60601-1-2 demand surge testing at level 2 to ensure patient and operator safety. Intelligent equipment used in building automation, such as Programmable Logic Controllers (PLCs) and Human-Machine Interfaces (HMIs), follows IEC 61131-2 with surge levels aligned to installation category. Communication transmission systems per ITU-T K.21 require elevated surge voltages up to 10 kV for subscriber line interfaces. Audio-video equipment under EN 55035 typically integrates level 2 or 3. Low-voltage electrical appliances, power tools, and power equipment commonly adhere to level 2 or 3, while information technology equipment (ITE) per EN 55024 specifies level 2 with optional higher levels for mission-critical systems. Rail transit applications (EN 50155) and spacecraft subsystems (MIL-STD-461) impose rigorous surge criteria, often combining IEC 61000-4-5 with additional transient requirements from RTCA DO-160 or GAM EG-13F.<\/p>\n Test Setup Configurations for Equipment Under Test (EUT)<\/h2>\nProper configuration of the test setup is paramount to achieving reproducible and meaningful surge immunity data. The LISUN SG61000-5 Surge Generator connects to the EUT via a dedicated CDN that provides appropriate impedance matching and decoupling between the surge source and the power supply network. For AC-powered devices, the CDN inserts a 18 \u00b5F capacitor between the gerador de picos<\/a><\/a> output and the line conductor for line-to-ground tests, or a 9 \u00b5F capacitor for line-to-line tests, per IEC 61000-4-5 specifications. The decoupling network, consisting of inductors and resistors, prevents the surge energy from propagating back into the mains supply while maintaining normal operating voltage to the EUT.<\/p>\nFor DC-powered equipment, such as automotive electronics or battery-operated instrumentation, the SG61000-5 employs an alternative coupling path using a 9 \u00b5F capacitor in series with a 2 \u03a9 resistor for line-to-line injection. The decoupling network for DC lines incorporates a high-current inductor rated to handle the charging current without saturation. Signal lines, including coaxial cables, twisted pairs, and multi-conductor cables, require specialized coupling through gas-discharge tubes (GDTs) or capacitive couplers, with the coupling network selected based on the signal bandwidth and maximum permissible leakage current. The generator\u2019s manual polarity switching and automatic alternation feature allow sequential application of positive and negative surges without manual intervention, reducing test time and operator variability.<\/p>\n The grounding architecture demands careful attention. A low-impedance ground reference plane, typically a copper sheet or conductive floor grid, connects to the generator\u2019s chassis ground, the EUT\u2019s protective earth, and the decoupling network\u2019s ground terminal. Stray capacitance between the EUT and ground must be minimized to avoid unintentional surge current paths that could alter test results. The SG61000-5 includes a built-in ground fault monitor that interrupts the test sequence if ground impedance exceeds the threshold, ensuring operator safety and test integrity. Table 2 presents the recommended coupling\/decoupling network selections for common EUT types.<\/p>\n \n\n\n| EUT Type<\/th>\n | Power Interface<\/th>\n | Coupling Mode<\/th>\n | Coupling Capacitance<\/th>\n | Decoupling Inductance<\/th>\n<\/tr>\n<\/thead>\n | \n\n| Lighting fixture<\/td>\n | AC mains (220 V)<\/td>\n | L-PE<\/td>\n | 18 \u00b5F<\/td>\n | 1.5 mH<\/td>\n<\/tr>\n | \n| Industrial drive<\/td>\n | AC mains (380 V)<\/td>\n | L-L<\/td>\n | 9 \u00b5F<\/td>\n | 1.5 mH<\/td>\n<\/tr>\n | \n| Medical monitor<\/td>\n | AC mains (110 V)<\/td>\n | L-PE<\/td>\n | 18 \u00b5F<\/td>\n | 1.5 mH<\/td>\n<\/tr>\n | \n| Battery charger<\/td>\n | DC (48 V)<\/td>\n | DC+ to DC-<\/td>\n | 9 \u00b5F + 2 \u03a9<\/td>\n | 1.5 mH<\/td>\n<\/tr>\n | \n| Ethernet switch<\/td>\n | Signal line<\/td>\n | Core to shield<\/td>\n | GDT (90 V)<\/td>\n | \u2014<\/td>\n<\/tr>\n | \n| PLC interface<\/td>\n | Signal line<\/td>\n | Wire to wire<\/td>\n | Capacitive (1 nF)<\/td>\n | \u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nTest Execution Protocols for Surge Voltage and Current Pulses<\/h2>\nExecuting a surge immunity test sequence requires precise control over several parameters: test voltage amplitude, number of surges, polarity, phase angle (for AC-powered EUTs), and repetition interval. The LISUN SG61000-5 allows the operator to program these parameters via an intuitive front-panel interface or remotely through RS-232\/USB communication. For each test level, the standard mandates a minimum of five positive and five negative surges at each selected phase angle, typically 0\u00b0, 90\u00b0, 180\u00b0, and 270\u00b0 relative to the AC mains zero-crossing. The repetition interval should be at least one second, though longer intervals may be necessary to avoid thermal accumulation in the EUT\u2019s internal protection components.<\/p>\n During surge application, the EUT must remain powered and operational in its nominal mode. For lighting fixtures, this means operating at rated voltage with the lamp on. For medical devices, the system should be in a clinically relevant configuration, while industrial equipment must run its typical process cycle. The test engineer monitors the EUT for performance degradation, latch-up, data corruption, or component damage. The SG61000-5\u2019s integrated oscilloscope interface displays the applied surge waveform, allowing verification of amplitude and timing before and after each pulse. Voltage and current probes connected to the generator\u2019s dedicated BNC outputs facilitate waveform capture for documentation and analysis.<\/p>\n In addition to standard surge application, the generator supports \u201cburst mode\u201d operation for evaluating SPD response under multiple successive pulses, simulating repeated lightning strikes or switching events. The burst interval can be set from 10 ms to 10 seconds, with up to 100 pulses per burst. This capability is particularly relevant for rail transit and spacecraft applications where transient clusters occur. The SG61000-5 also includes a trigger output for synchronizing external measurement equipment, such as high-speed data loggers or thermal cameras, to capture SPD clamping behavior and energy dissipation.<\/p>\n Analyzing EUT Performance and Evaluating SPD Clamping Behavior<\/h2>\nThe primary objective of surge immunity testing is to determine whether the EUT can survive a specified surge without losing functionality or sustaining damage. For equipment incorporating internal surge protection devices (SPDs), such as metal oxide varistors (MOVs), gas discharge tubes (GDTs), or transient voltage suppression (TVS) diodes, the test evaluates clamping voltage, response time, and energy handling capacity. The LISUN SG61000-5\u2019s integrated voltage and current measurement channels provide real-time data on the residual voltage across the EUT during surge application. This residual voltage, typically measured at the EUT\u2019s input terminals, must not exceed the equipment\u2019s insulation withstand voltage or the safe operating area of downstream components.<\/p>\n The clamping voltage is defined as the peak voltage appearing across the SPD during surge current conduction. For a 2 kV, 8\/20 \u00b5s surge applied to an MOV-based SPD rated for 275 V AC, typical clamping voltages range from 600 V to 900 V, depending on varistor diameter and energy rating. The SG61000-5\u2019s high-bandwidth measurement system (DC to 20 MHz) captures the clamping event with sufficient resolution to evaluate overshoot and ringing. The generator\u2019s software calculates surge current through the SPD by integrating the measured current waveform, allowing calculation of absorbed energy: E = \u222b V(t) \u00d7 I(t) dt. This energy, expressed in joules, must remain below the SPD\u2019s rated absorption capacity to prevent thermal runaway or catastrophic failure.<\/p>\n Performance degradation over multiple surges is assessed using a step-stress protocol, where surge amplitude increases incrementally (e.g., from 1 kV to 4 kV in 0.5 kV steps) until failure occurs. This method determines the SPD\u2019s maximum repetitive surge capability. For semiconductor components like TVS diodes, leakage current at nominal reverse standoff voltage is measured before and after each surge to detect latent damage. Table 3 illustrates a representative test sequence for an industrial controller with integrated MOV protection.<\/p>\n \n\n\n| Surge Level (kV)<\/th>\n | Polaridade<\/th>\n | Residual Voltage (V)<\/th>\n | Surge Current (A)<\/th>\n | Absorbed Energy (J)<\/th>\n | Leakage Current (\u00b5A)<\/th>\n | Result<\/th>\n<\/tr>\n<\/thead>\n | \n\n| 1.0<\/td>\n | Positive<\/td>\n | 520<\/td>\n | 250<\/td>\n | 130<\/td>\n | 12<\/td>\n | Pass<\/td>\n<\/tr>\n | \n| 1.0<\/td>\n | Negative<\/td>\n | 515<\/td>\n | 245<\/td>\n | 126<\/td>\n | 11<\/td>\n | Pass<\/td>\n<\/tr>\n | \n| 2.0<\/td>\n | Positive<\/td>\n | 680<\/td>\n | 410<\/td>\n | 279<\/td>\n | 14<\/td>\n | Pass<\/td>\n<\/tr>\n | \n| 2.0<\/td>\n | Negative<\/td>\n | 675<\/td>\n | 405<\/td>\n | 273<\/td>\n | 13<\/td>\n | Pass<\/td>\n<\/tr>\n | \n| 3.0<\/td>\n | Positive<\/td>\n | 820<\/td>\n | 560<\/td>\n | 459<\/td>\n | 18<\/td>\n | Pass<\/td>\n<\/tr>\n | \n| 3.0<\/td>\n | Negative<\/td>\n | 815<\/td>\n | 555<\/td>\n | 452<\/td>\n | 17<\/td>\n | Pass<\/td>\n<\/tr>\n | \n| 4.0<\/td>\n | Positive<\/td>\n | 950<\/td>\n | 700<\/td>\n | 665<\/td>\n | 22<\/td>\n | Pass<\/td>\n<\/tr>\n | \n| 4.0<\/td>\n | Negative<\/td>\n | 940<\/td>\n | 695<\/td>\n | 653<\/td>\n | 21<\/td>\n | Pass<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nCoupling Network Impedance Selection for DC and AC Power Ports<\/h2>\nThe coupling network impedance plays a critical role in shaping the surge waveform delivered to the EUT. For AC power ports, the SG61000-5 uses a coupling capacitor of 18 \u00b5F for line-to-ground tests and 9 \u00b5F for line-to-line tests, as prescribed by IEC 61000-4-5. These capacitors present a low impedance path for the surge\u2019s high-frequency components while blocking the 50\/60 Hz mains voltage. The decoupling network, composed of series inductors (1.5 mH typical) and parallel resistors, ensures that the surge energy is directed toward the EUT rather than the power source. The generator automatically adjusts the source impedance to 2 \u03a9 for line-to-line coupling and 12 \u03a9 for line-to-ground coupling, simulating average power line impedances.<\/p>\n For DC power ports, the coupling method deviates from AC practices to accommodate the absence of a zero-crossing reference. The SG61000-5 uses a 9 \u00b5F capacitor in series with a 2 \u03a9 resistor for differential-mode injection between the DC+ and DC- terminals. Common-mode injection to ground requires a 0.1 \u00b5F capacitor in series with a 12 \u03a9 resistor. The decoupling network for DC lines incorporates a 1.5 mH inductor rated for the continuous DC current without saturation. For low-voltage DC systems (e.g., 12 V to 48 V), the surge voltage must be reduced to avoid overstressing the coupling capacitor\u2019s insulation. The generator includes a safety interlock that prevents enabling a surge voltage exceeding the coupling component\u2019s voltage rating.<\/p>\n Signal line coupling employs gas-discharge tubes (GDTs) for differential-mode injection, with the GDT breakdown voltage selected to match the signal voltage range. For example, a 90 V GDT accommodates RS-485 or Ethernet (PoE) signal lines, while a 200 V GDT suits analog sensor inputs. The coupling network also includes a decoupling resistor (typically 40 \u03a9) to limit surge current into the signal source. The SG61000-5\u2019s software library contains preconfigured coupling settings for common interface standards (USB, CAN bus, HDMI), reducing setup time and error risk.<\/p>\n Application-Specific Surge Testing for Lighting and Industrial Equipment<\/h2>\nLighting fixtures, particularly those employing Light Emitting Diode (LED) technology, require rigorous surge testing due to their exposure to outdoor environments and sensitive driver circuitry. The LISUN SG61000-5 supports the specific test requirements of EN 61547, which mandates surge amplitudes up to 4 kV line-to-line and 6 kV line-to-ground for luminaires installed in external locations. The generator\u2019s ability to deliver both 1.2\/50 \u00b5s voltage and 8\/20 \u00b5s current impulses allows comprehensive evaluation of the LED driver\u2019s input rectifier, PFC stage, and output capacitor bank. For series-equipped surge protection within the driver, the test must verify that the SPD clamps before the surge voltage exceeds the safe operating voltage of the LED strings, typically 50 V to 200 V. The SG61000-5\u2019s 20 MHz bandwidth captures sub-microsecond clamping events, ensuring accurate assessment.<\/p>\n Industrial equipment, such as variable-frequency drives (VFDs), motor starters, and power supplies for automation systems, demands surge testing under both powered and unpowered conditions. Powered testing evaluates the EUT\u2019s ability to continue operation without performance degradation, while unpowered testing assesses insulation withstand capability. The SG61000-5\u2019s phase-angle synchronization allows injection at critical points in the AC cycle where the instantaneous voltage is highest, maximizing stress. For 3-phase equipment, the generator can be used with an external 3-phase CDN to apply surges sequentially to each phase, with the remaining phases grounded. The test must also verify that surge currents do not cause false triggering of protective relays or unintended motor braking.<\/p>\n Surge Immunity Validation for Medical Devices and Intelligent Systems<\/h2>\nMedical devices, governed by IEC 60601-1-2, impose surge immunity requirements that balance device robustness with patient safety. The LISUN SG61000-5\u2019s programmable output amplitude, ranging from 0.5 kV to 6.6 kV, accommodates the test levels specified in the standard\u2019s tables (typically 2 kV for AC mains ports). However, the critical aspect of medical device testing lies in the assessment of risk for critical systems. A surge-induced latch-up in a patient-monitoring ECG amplifier could lead to loss of vital sign display, while a surge that corrupts memory in an infusion pump may alter drug delivery rates. The SG61000-5\u2019s integrated EUT power monitoring feature\u2014optional in the form of a current clamp connected to the generator\u2019s auxiliary input\u2014allows detection of supply current changes resulting from surge events.<\/p>\n Intelligent equipment, including programmable logic controllers (PLCs) and edge computing nodes, contains microprocessors, FPGAs, and communication interfaces that are inherently susceptible to transient disturbances. The SG61000-5\u2019s multi-pulse burst mode is particularly relevant for such systems, as it simulates the multiple surges that may occur during lightning storms or grid switching. According to IEC 61000-4-5, the EUT must survive a minimum of 10 surges at each test level without functional degradation. For equipment containing non-volatile memory, the test must include verification of data retention after surge exposure. The SG61000-5\u2019s remote control capability allows integration with automated test scripts, enabling efficient qualification testing across multiple operating modes (e.g., normal operation, standby, update mode).<\/p>\n Competitive Advantages of the LISUN SG61000-5 in SPD Testing<\/h2>\nThe LISUN SG61000-5 Surge Generator distinguishes itself through several technical attributes that enhance testing efficiency and reliability. First, its output voltage accuracy of \u00b110% across the entire 0.5 kV to 6.6 kV range exceeds the IEC 61000-4-5 tolerance requirements, ensuring that test results are reproducible between different laboratories. Second, the generator\u2019s integrated measurement system eliminates the need for external oscilloscopes and current probes, simplifying cabling and reducing measurement uncertainty. The built-in digital storage capacity captures up to 1000 surge events, allowing post-test analysis of waveform variations and SPD aging.<\/p>\n Third, the SG61000-5\u2019s user interface includes pre-programmed test sequences for common IEC 61000-4-5 test levels, reducing operator training time. The generator supports both automatic and manual polarity selection, and its phase angle resolution of 1\u00b0 facilitates precise synchronization with AC mains cycles. Fourth, the unit\u2019s compact benchtop design (450 mm \u00d7 350 mm \u00d7 200 mm) and weight of 22 kg enable deployment in both laboratory and field environments. The integrated safety features, including emergency stop, overvoltage protection, and ground fault detection, comply with EN 61010-1 for electrical test equipment.<\/p>\n Safety Protocols and Calibration Maintenance for Reliable Testing<\/h2>\nOperating the LISUN SG61000-5 requires adherence to safety procedures designed to protect both personnel and the instrument. The generator stores energy in high-voltage capacitors rated for up to 6.6 kV DC, and these capacitors retain charge after operation unless discharged through the internal bleed resistor. Operators must ensure that the instrument is installed near a dedicated ground connection with impedance less than 0.1 \u03a9. The EUT must be connected to the coupling network before the generator is enabled, and the test area must be marked with high-voltage warning signs. The generator\u2019s \u201ccharge indicator\u201d light provides visual confirmation of capacitor voltage, while an audible alarm sounds when voltage exceeds 1 kV.<\/p>\n Calibration maintenance is essential for preserving measurement accuracy. The SG61000-5\u2019s voltage and current measurement channels should be verified annually using a calibrated voltage probe (e.g., a 1000:1 high-voltage probe with 40 MHz bandwidth) and a current transformer (e.g., 0.1 V\/A sensitivity). The generator\u2019s waveform rise time and duration parameters must be checked against the IEC 61000-4-5 specifications using an oscilloscope with at least 100 MHz bandwidth and 1 GS\/s sampling rate. LISUN provides a calibration kit that includes a precision resistive load (2 \u03a9, 50 \u03a9, and 100 \u03a9) and a reference voltage divider, enabling in-house verification. Table 4 outlines the recommended calibration intervals and checkpoints.<\/p>\n \n\n\n| Calibration Item<\/th>\n | Nominal Value<\/th>\n | Tolerance<\/th>\n | Check Interval<\/th>\n | Method<\/th>\n<\/tr>\n<\/thead>\n | \n\n| Open-circuit voltage<\/td>\n | 2.0 kV<\/td>\n | \u00b110%<\/td>\n | Annual<\/td>\n | Resistive divider + DMM<\/td>\n<\/tr>\n | \n| Short-circuit current<\/td>\n | 1.0 kA<\/td>\n | \u00b110%<\/td>\n | Annual<\/td>\n | Current transformer + scope<\/td>\n<\/tr>\n | \n| Voltage rise time<\/td>\n | 1.2 \u00b5s<\/td>\n | \u00b130%<\/td>\n | Biannual<\/td>\n | High-voltage probe + scope<\/td>\n<\/tr>\n | \n| Current front time<\/td>\n | 8 \u00b5s<\/td>\n | \u00b120%<\/td>\n | Biannual<\/td>\n | Current transformer + scope<\/td>\n<\/tr>\n | \n| Phase angle accuracy<\/td>\n | 90\u00b0<\/td>\n | \u00b11\u00b0<\/td>\n | Biannual<\/td>\n | Phase-angle meter<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nPerguntas frequentes (FAQ)<\/h2>\nQ1: What is the maximum repetitive frequency of the LISUN SG61000-5 Surge Generator?<\/strong>
\nThe generator can deliver surges at intervals as short as one second, corresponding to a maximum repetition frequency of 1 Hz. When operating in burst mode, the inter-pulse interval can be reduced to 10 milliseconds for up to 100 pulses per burst, but the average power dissipation must be monitored to avoid overheating the internal pulse-forming network.<\/p>\nQ2: Can the SG61000-5 test equipment with 3-phase power without an external adapter?<\/strong>
\nThe SG61000-5 is configured for single-phase AC and DC testing via its internal coupling network. For 3-phase equipment (e.g., industrial motors, rail transit inverters), an external 3-phase CDN such as the LISUN CDN-3PH-16A is required. This accessory provides synchronized surge injection to each phase while decoupling the remaining phases, maintaining compliance with IEC 61000-4-5.<\/p>\nQ3: How does the generator handle testing of devices with integrated surge protection that includes thermal fuses?<\/strong>
\nThe SG61000-5\u2019s integrated current measurement can detect the sudden current drop associated with a blown thermal fuse. The generator\u2019s software flags events where the surge current waveform deviates from the expected clamping profile, indicating SPD failure. Additionally, the EUT power monitoring capability detects supply current interruptions caused by fuse activation.<\/p>\nQ4: What is the source impedance of the SG61000-5 for differential-mode versus common-mode surges?<\/strong>
\nFor differential-mode surges (line-to-line), the effective source impedance is 2 \u03a9. For common-mode surges (line-to-ground or neutral-to-ground), the source impedance increases to 12 \u03a9. These values conform to IEC 61000-4-5 and ensure that surge current distribution mimics real-world power line conditions.<\/p>\nQ5: Does the SG61000-5 support automated testing through external programming?<\/strong>
\nYes, the generator provides RS-232 and USB interfaces with a command set that allows full control of voltage amplitude, polarity, phase angle, coupling mode, and repetition interval. LabVIEW and Python drivers are available, enabling integration into automated qualification systems for high-volume testing of electronic components, household appliances, and medical devices.<\/p>","protected":false},"excerpt":{"rendered":"Introduction to Surge Immunity Testing and LISUN SG61000-5 Surge Generator Transient overvoltages and surge currents represent one of the most pervasive threats to electronic systems across industrial, commercial, and residential domains. Lightning strikes, power grid switching operations, and inductive load disconnections generate high-energy impulses capable of degrading insulation, corrupting data, or causing catastrophic failure in […]<\/p>\n","protected":false},"author":1,"featured_media":4867,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1279],"class_list":["post-9262","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs","tag-surge-protection-test"],"_links":{"self":[{"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/posts\/9262","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/comments?post=9262"}],"version-history":[{"count":1,"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/posts\/9262\/revisions"}],"predecessor-version":[{"id":9263,"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/posts\/9262\/revisions\/9263"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/media\/4867"}],"wp:attachment":[{"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/media?parent=9262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/categories?post=9262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ledtestsystem.com\/pt\/wp-json\/wp\/v2\/tags?post=9262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} | | | |