Integrated Safety Detectors

One Compact Device for Complete Transformer Protection

Modern transformers require continuous monitoring of critical operating parameters to ensure reliability, safety, and long service life. COMEM Integrated Safety Devices (RIS2) combine multiple protection and monitoring functions into a single compact unit, reducing installation complexity while improving operational visibility.

Supplied by Insulect, the RIS2 enables operators to maintain constant control over pressure, temperature, oil level, and gassing using one integrated device, helping prevent failures and optimise maintenance planning.

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Application Overview

COMEM RIS2 integrated safety devices are specifically designed for liquid‑filled distribution and small power transformers, where space, reliability, and environmental resistance are critical.

Typical applications include:

Hermetically sealed transformers, with or without oil conservators
Distribution and small power transformers in utility and industrial networks
New transformer installations requiring compact, integrated protection
Retrofit projects, replacing multiple discrete devices with a single unit
Offshore and coastal installations, exposed to corrosion and UV radiation
Tropical and harsh environments, with wide temperature variations
Solar power applications, where compact design and reliability are essential

The rugged design and flexible configuration options ensure dependable performance across a wide range of operating conditions.

What We Solve For

Transformers are exposed to multiple stress factors, including internal pressure variations, rising oil temperature, oil level changes, and gas formation caused by developing faults. Traditionally, these parameters are monitored using separate devices, increasing complexity, wiring, and maintenance effort.

The RIS2 solves this challenge by integrating four critical monitoring and protection functions into one device, reducing installation space, simplifying maintenance, and improving overall transformer safety. Operators gain real‑time visibility of transformer health and can proactively plan maintenance before issues escalate into failures.

Why buy COMEM Integrated Safety Devices

Proven technology with a strong global track record
Large installed base, trusted by transformer manufacturers worldwide
4‑in‑1 functionality, reducing cost, space, and installation time
Adjustable settings, adaptable to different transformer designs
Designed for harsh environments, including offshore and solar sites
Backed by Insulect’s technical expertise and local support

TECHNICAL

Functionality & Options

Oil level and gas detection via internal float mechanism
Pressure monitoring with adjustable pressure switch
Oil temperature monitoring, including: Temperature alarm (T2); Temperature trip / stop (T1)

Visual temperature indication with drag pointer thermometer
Manual gas extraction valve for accumulated gas
Adjustable setpoints for pressure and temperature thresholds
Optional analogue outputs (4–20 mA) for temperature and pressure
Optional PT100 temperature sensor
Optional second pressure switch
Offshore‑rated versions available (RIS2 Offshore / eRIS2)

Key Technical Specifications

Degree of protection: IP66
Ambient temperature range: –40 °C to +55 °C
Oil temperature monitoring range:

Measurement: 30 °C to 160 °C

Alarm / trip: 30 °C to 120 °C

Pressure monitoring range:

Standard: 100 mbar to 500 mbar

Optional: up to ±1000 mbar

Max rated pressure: 500 mbar (higher ranges on request)
UV resistance: 1000 h (offshore suitability)
Cable connection: M25 × 1.5
Electrical ratings:

Pressure switch: up to 6 A

Thermostat: up to 16 A

Analogue output (eRIS2):

Temperature: 4–20 mA

Pressure: 4–20 mA

Installation: Indoor and outdoor

IMPLEMENTATION

Services & Support

Insulect offers comprehensive services and support for the products we specialise in, enhancing value for local utilities, major energy users, equipment manufacturers, and service operators.

LOCAL TECHNICAL TEAM

Our local technical team provides exceptional support and expertise, ensuring quick response times and personalised service to tackle any challenges that may arise during project execution.

ENGINEERING EXPERTISE

Through COMEM, our team utilises advanced technology and industry knowledge to assist customers.

PROCUREMENT & LOGISTICS

We facilitate smooth procurement and logistics processes by sourcing from trusted, proven partners and coordinating timely deliveries, ensuring projects remain on schedule and within budget.