ZW32SR-12 12kV Smart Recloser with Remote Control

The ZW32SR-12 is a smart, pole-mounted vacuum circuit breaker with integrated current transformers (CTs), remote control capabilities, and customizable protection settings. Designed for outdoor 12kV feeders, it is widely used in distribution automation, renewable energy nodes, and storm-resilient networks.

🔧 Product Overview

ZW32SR-12 combines a ZW32 vacuum interrupter base with a remote terminal unit (RTU) or intelligent controller for communication, monitoring, and protection. It supports auto-reclosing, programmable trip curves, and can be managed via SCADA, GPRS, or Modbus TCP/IP.

Highlights:

12kV rated, pole-mounted smart breaker
3-phase vacuum interrupter with CTs and PTs
Remote trip/close via control unit or software
Protection types: overcurrent, earth fault, phase loss
Supports GPRS/3G/4G, fiber, RS485, or IEC 101/104

📐 Technical Specifications

Parameter	Value
Rated Voltage	12 kV
Rated Current	630 A
Short-Circuit Breaking Capacity	16 / 20 / 25 kA
Mechanical Life	≥ 10,000 operations
Closing/Opening Time	≤ 80 ms
Insulation Level	42 kV (1 min), 75 kV LI
Operating Method	Electric + Remote / Manual
Communication Protocols	GPRS, Modbus, IEC 104, RS485
Controller Power Supply	DC 24V / 48V / Battery + Solar

ZW32SR-12 12kV Smart Recloser with Remote Control

🌍 Application Scenarios

Pole-mounted feeder automation in smart grids
Rural electrification and low-density networks
Renewable energy points (wind/solar farms)
Loop network sectionalizing switches
Islands and high-risk weather-prone regions

📊 Case Study: Colombia Smart Grid Integration (2022)

In 2022, ZW32SR-12 breakers were installed in Colombia’s Antioquia region to automate 12kV feeder networks in mountainous terrain.
Results:

Enabled real-time fault isolation during storms
Reduced manual patrol time by 60%
Communicated reliably via GPRS over a 3G network

Source: Colombian Rural Grid Smart Expansion Report, 2022

🛠 Installation & Configuration

Mount securely using a hot-dip galvanized bracket or U-bolts
Connect power lines and ground terminals per phase order
Wire CTs/PTs into the controller box with secure plug-in cables
Configure trip curves and remote logic via software interface
Test open/close from both manual lever and the control panel

❓ Frequently Asked Questions (FAQ)

1. What’s the difference between ZW32SR and ZW32-12MF?
ZW32SR adds remote control, IoT communications, and real-time monitoring to the base vacuum interrupter.

2. Can it operate in areas without power lines?
Yes, the controller supports solar + battery power, ideal for rural or island environments.

3. What software or SCADA can manage it?
Supports standard IEC 101/104, Modbus, and DNP3—compatible with most SCADA systems.

4. Is remote switching secure?
Yes, encrypted communication protocols and timeout safety mechanisms are supported.

5. What type of recloser logic is included?
Up to 3 reclose attempts, programmable timing, overcurrent curve customization (ANSI 51, 50, 67).