Low Voltage CTs Low Voltage Current Transformers LQZJ4, LQZ5-0.66 Solid Cast-Resin Current Transformer May 3, 2026 / July 20, 2026 by tianming Product Overview The LQZ5-0.66 solid cast-resin low-voltage current transformer is an indoor busbar-type current transformer designed for current measurement, energy metering, electrical monitoring, and relay protection in AC circuits with rated voltage up to 0.66kV. The product adopts a fully enclosed cast-resin structure, with the core and secondary winding encapsulated in epoxy resin to provide […] Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 V vertical window-type current transformer, plastic case May 3, 2026 / July 20, 2026 by tianming Product Overview The BH-0.66 V vertical window-type current transformer is an indoor plastic case low-voltage current transformer designed for current measurement, energy metering, and relay protection in AC systems with rated voltage up to 0.66kV and rated frequency of 50Hz. The product adopts a vertical through-core structure, allowing the primary busbar, round conductor, or cable […] Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66B VI Protection Current Transformer, Low Voltage Switchgear May 3, 2026 / July 20, 2026 by tianming Product Overview The BH-0.66B VI protection current transformer is an indoor plastic case current transformer designed for low-voltage AC systems with rated voltage up to 0.66kV and rated frequency of 50Hz. It is mainly used in relay protection and current monitoring circuits, providing a proportional small-current signal to protection relays, monitoring instruments, and low-voltage protection […] Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 IV Vertical Square-Hole Current Transformer, low voltage CTs May 3, 2026 / July 20, 2026 by tianming BH-0.66 IV vertical square-hole current transformer for 0.66kV low-voltage AC distribution systems. Designed for indoor metering, monitoring and current signal conversion, with 5A secondary output, 600A–3000A primary current options, 0.2/0.2S/0.5/0.5S accuracy classes, 50Hz operation and 60×30, 80×30, 100×30, 120×50 aperture sizes. Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 II Indoor Plastic Case Current Transformer, low voltage distribution May 3, 2026 / July 20, 2026 by tianming BH-0.66 II indoor plastic case current transformer for 0.66kV low-voltage AC distribution systems. Designed for metering, monitoring and current signal conversion, with 5A secondary output, 150A–4000A primary current options, 0.5/0.2/0.2S/0.5S accuracy classes, 50Hz operation and multiple rectangular window sizes for busbar or cable installation. Read more »
Low Voltage CTs Low Voltage Current Transformers BH-0.66 III Indoor Plastic Case Current Transformer, low voltage distribution May 3, 2026 / July 20, 2026 by tianming BH-0.66 III indoor plastic case current transformer for 0.66kV low-voltage distribution systems. Designed for metering, monitoring and current signal conversion, with 5A secondary output, 150A–5000A primary current options, 0.5/0.5S/0.2 accuracy classes, 50Hz operation, insulated flame-retardant housing and multiple window sizes for busbar installation. Read more »
Low Voltage CTs Low Voltage Current Transformers LMZ Series 0.66kV Indoor Epoxy resin cast Current Transformer May 3, 2026 / July 20, 2026 by tianming LMZ5/6/7/8 series 0.66kV indoor current transformers for low-voltage metering applications. Four structural configurations (rectangular, window-type, ring-type) with unsaturated cast-resin or plastic shell insulation, 0.2/0.2S/0.5/0.5S accuracy classes, 1A/5A secondary output, 5-4000A primary current range. IEC 61869 and GB/T 20840 compliant. Custom specifications available. Read more »
Low Voltage CTs Low Voltage Current Transformers LQZJ-0.66 low-voltage indoor Current Transformer Epoxy resin cast May 3, 2026 / July 20, 2026 by tianming LQZJ-0.66 indoor cast-resin current transformer for 0.66 kV (660 V) low-voltage AC distribution at 50/60 Hz. Primary current 5–1000 A, 5 A secondary, accuracy class 0.2 / 0.5 / 1 / 10P, rated burden 10–15 VA, Ith 50 I₁n, Idyn 100 I₁n. Vacuum-cast epoxy insulation, Ø103 mm aperture, 140×127.5 mm envelope, bottom or side mount. Compliant with IEC 61869-1/2 and GB/T 20840.1/2; direct replacement for LQG-0.5. Engineering datasheet, accuracy limits, burden calculation and selection guide. Read more »
Low Voltage CTs Low Voltage Current Transformers AKH-0.66/23/58/88/812/816 Split-Core Current Transformer May 3, 2026 / July 20, 2026 by tianming AKH-0.66 split-core current transformers for 0.66kV low-voltage distribution metering and protection. Opening-type design enables retrofit installation with 5A secondary output, accuracy classes 0.5/1/3, cast resin insulation. Compliant with GB1208-2006 and IEC60044-1:2003. Available in five window aperture variants. Read more »
Low Voltage CTs Low Voltage Current Transformers AG12-0.72 Indoor Low Voltage Current Transformer May 3, 2026 / July 20, 2026 by tianming AG12-0.72 indoor plastic case current transformers for 0.72kV (720V) low-voltage distribution. Features 5A secondary output, class 0.5/1.0 accuracy, window-type aperture mounting. Multiple models available (50/5A-4000/5A ratios). IEC60044-1:2003 and GB1208-2006 compliant. Custom configurations available. Read more »
Documents LZZBJ9-10 11kV Cast-Resin Current Transformer: IEC-Compliant Testing & Maintenance for Metering & Protection May 3, 2026 / April 22, 2026 by tianming 4. Periodic Testing Periodic testing is a scheduled, systematic evaluation of electrical systems and components to ensure ongoing compliance with safety standards, operational reliability, and regulatory requirements. Conducted at predetermined intervals—such as annually, semi-annually, or quarterly—these tests help identify degradation, wear, or latent faults before they lead to failures or hazards. The frequency of testing […] Read more »
Documents Accurate 0.2S Class 11kV CT LZZBJ9-12 – Cast-Resin, Dual Indoor/Outdoor Use for RMUs & Substations May 3, 2026 / April 22, 2026 by tianming Introduction The LZZBJ9-12 current transformer is a high-performance, resin-insulated instrument transformer specifically engineered for accurate current measurement and protection in 10 kV (nominal system voltage) alternating current (AC) power systems. Designed in accordance with international standards such as IEC 61869-2 and national specifications like GB/T 20840.2, this transformer ensures reliable operation under demanding electrical and […] Read more »
