ZB-ZNB Intelligent Flexible On-Load Tap-Changing Device

New Products / New Technology

The ZB‑ZNB intelligent flexible on‑load voltage regulation device is a next‑generation smart distribution equipment specially developed to address comprehensive power quality issues such as significant voltage fluctuations, three‑phase imbalance, and inadequate reactive power compensation in distribution networks, as well as the problem of reverse overloading in transformers caused by power flow reversal. Integrating core technologies including power‑electronics‑based flexible regulation, on‑load voltage regulation, dynamic reactive power compensation, and three‑phase imbalance mitigation, the product employs on‑load voltage regulation and advanced intelligent control strategies to achieve automatic voltage stabilization, optimized power factor, and real‑time operational monitoring, thereby providing robust and reliable support for the safe, efficient, and stable operation of distribution networks.

ZBSVR Medium-Voltage Single-Phase Automatic Voltage Regulator

New Products / New Technology

ZBSVR 10kV Single-Phase Voltage Regulator A single-phase voltage regulation device specifically designed for long‑radius, high‑voltage‑drop, and unstable‑voltage distribution lines, as well as for new‑energy grid‑connection applications. Key advantages: phase‑by‑phase voltage regulation to address three‑phase imbalance; high regulation accuracy (32 steps); line capacity up to 25 MVA; on‑load tap changer with arc‑free switching and a service life of 1.2 million operations; fully sealed design ensuring 20 years of maintenance‑free operation with low losses; supports non‑stop‑service de‑energization; and enables SCADA‑based distribution automation via the LAN interface.

27KV AUTOMATIC VACUUM RECLOSER

New Products / New Technology

The 27kV automatic vacuum recloser is a pole‑mounted high‑voltage device that employs solid insulation combined with vacuum arc‑extinguishing technology. It features a compact footprint and lightweight design, allowing for single‑person installation. Serving three functions in one unit, it can operate as a circuit breaker, a recloser, and an automated switch. Pre‑configured and fully tested at the factory, it is ready to install and use on site immediately. In the event of a fault, it automatically executes a "open–close–open–close–lockout" sequence: equipped with high‑precision current transformers and voltage sensors for real‑time monitoring, the vacuum arc‑extinguishing chamber interrupts fault currents in ≤55 ms. For transient faults, power is restored within seconds; for permanent faults, the system isolates the issue automatically, all without any manual intervention.