Technical Specifications · ROCKWILL

33kV 3-Pole Outdoor SCADA-Ready Automatic Recloser - Technical Specification

33 kV three‑pole outdoor vacuum automatic circuit‑recloser, rated current 400‑630A, short‑circuit breaking current ≥12.5kA, SCADA‑ready, hermetically‑sealed tank, for tropical overhead distribution‑networks.

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Updated2026.09

LanguageEnglish

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Automatic Recloser

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Document description

This PDF used for supplier tender response, technical gap‑analysis and pre‑qualification review for tropical overhead‑line projects. This three‑pole outdoor automatic circuit‑recloser complies with IEC 62271‑1, IEC 62271‑111 and relevant local utility specifications. It adopts vacuum interrupter with permanent hermetically‑sealed tank, self‑contained operating mechanism and independent stainless‑steel IP54 control cubicle.

This document records key performance indicators including lightning impulse withstand level, total silicone‑rubber bushing creepage distance 576 mm, multi‑ratio integrated potential transformer with 500VA burden, surge‑protection device with auto‑reset ELCB, non‑volatile fault‑and‑event memory, operation counter, visible colour‑coded open‑close position indicator and manual maintenance operating function.

It defines comprehensive SCADA remote‑monitoring & control requirements, dry‑contact signal interfaces, lifting lugs, arrester mounting brackets, source‑load side permanent marking and battery‑back‑up power supply scheme. Custom‑manufacturing and project‑specific factory‑acceptance‑test can be implemented to meet utility mandatory‑clause requirements. Please contact us for full‑set compliance matrix, dimension drawings and complete type‑test reports.

Frequently asked questions

How to select current sensor or current transformer specifications for Rockwill Smart Recloser?

The Rockwill standard smart recloser offers high precision with a wide measuring range (2A–16,000A). Simply ensure your normal current is within this standard range when making a selection.

Does Rockwill offer an MV Smart Auto Recloser capable of measuring primary currents as low as 0.1A?

Yes. In addition to the standard 2A–16,000A range, Rockwill provides custom-configured units for ultra-low current measurement and protection in the 0.1A–2A range.

Can this outdoor automatic‑recloser implement custom‑adjustment to meet utility‑project mandatory‑technical‑clauses?

Custom‑made services include secondary‑function adjustment, accessory configuration optimisation and project‑specified factory‑acceptance‑test‑items according to utility‑specification. Please contact us to submit your technical‑specification.

What functions are supported by SCADA‑ready control unit for overhead‑distribution‑network automatic recloser?

It realises remote monitoring, remote control, fault‑event recording, non‑volatile data storage and status‑signal output via dry‑contact interfaces for utility automation‑system integration. Please contact us for communication‑function description.

What core value does permanently hermetically‑sealed tank bring for outdoor automatic circuit‑recloser in tropical humid environment?

Hermetically‑sealed tank blocks moisture and humid‑air ingress, minimises internal corrosion risk and reduces routine gas‑maintenance workload for long‑term field‑operation. Please contact us for sealing‑structure introduction.

33kV 3-Pole Outdoor SCADA-Ready Automatic Recloser - Technical Specification

Document description

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