1s27

一般信息

SKU

1s27

简要说明

High speed optical arc fault protection

详细描述

The 1S27 is a high‑speed optical arc fault protection relay designed for air‑insulated metalclad switchgear.

It provides rapid detection and signalling of arc flash events, improving personnel safety and reducing equipment damage.

The relay supports arc‑only or current‑checked protection schemes, allowing flexible integration with existing protection relays. Housed in a compact Delta size 2, 2U enclosure, the 1S27 offers versatile mounting options and plug‑in terminals to simplify installation and retrofit applications.

数量

功能

Four-point sensor inputs
Optional linear sensor input
Four high speed tripping outputs
One or two protection zones
Front panel reset
Continuous arc sensor supervision
Integrated self-supervision with fail alarm
Surface or rail mount

应用

The 1S27 provides high-speed detection and signalling of arc flash hazards in air-insulated metalclad switchgear, suitable for both new installations and retrofit applications. Arc fault protection can be implemented using arc-only detection or enhanced with current checking via existing protection relay logic and fast instantaneous overcurrent elements. The unit supports flexible mounting in a compact Delta size 2, 2U enclosure and includes plug-in terminals for easy panel pre-wiring.

delta-enclosure-stp-files.zip

PDF1_1s27-user-guide-v01-2.pdf

PDF2_arc-flash-timing-test-guide(5).pdf

1s27-technical-bulletin-v01-0(1).pdf

1s27-user-guide-v01-2.pdf

arc-flash-timing-test-guide(5).pdf