Name: Reyrolle DU3-201-LA-60 | Differential Protection Relay - NEWPLCDCS
Price: 1002.00 USD
Availability: InStock

Description

The Reyrolle Duobias-M (DU3-201-LA-60) is a highly reliable Numerical Differential Protection Relay designed specifically for transformer and generator protection. It provides fast, sensitive, and stable fault clearance for internal and external faults in power distribution networks. Rated for 110V operation, this unit is widely recognized in industrial and utility sectors for its robust performance, ensuring the integrity of critical electrical infrastructure through advanced biasing and harmonic restraint logic.

Technical Specifications

Feature	Details
Brand	Reyrolle (Siemens)
Model	Duobias-M (DU3-201-LA-60)
Origin	UK
Power	110V AC/DC Auxiliary Supply
Input/Output	Biased Differential / Restricted Earth Fault
Function	Transformer/Generator Differential Protection
Color	Industrial Gray
Hot Swappable	Modular (Requires terminal isolation)

Key Product Features

🛡️ Biased Differential Protection: Features advanced percentage bias characteristics to prevent nuisance tripping during through-faults or magnetizing inrush conditions.
⚡ Harmonic Restraint: Incorporates sensitive second and fifth harmonic restraint, ensuring the relay does not trip during transformer energization or over-fluxing.
🧩 Compact Design: Engineered for space-efficient installation within substation control panels while maintaining high-density protection logic.
🌐 Integration Capability: Designed to be compatible with modern Reyrolle protection schemes and automated substation monitoring systems.
📟 Diagnostic Capability: Includes built-in self-monitoring and status indicators to confirm “Healthy” operation, providing peace of mind for mission-critical power systems.

Recommended Series Models (Related Reyrolle Protection Relays)

These relays are frequently integrated into high-voltage substation schemes alongside the Duobias-M:

Reyrolle 7SR10: Argus Overcurrent Relay
Reyrolle 7SR11: Argus Directional Overcurrent Relay
Reyrolle 7SR12: Duobias Transformer Differential Relay (Successor)
Reyrolle 7SR17: Relay for Earth Fault Protection
Reyrolle 7SR22: Argus Motor Protection Relay
Reyrolle 7SR23: Argus Transformer Protection Relay
Reyrolle 7SR24: Distance Protection Relay
Reyrolle 7SR38: Multi-Function Protection Relay
Reyrolle 7SR45: Self-Powered Overcurrent Relay
Reyrolle 7SJ80: Multifunctional Protection Relay

At Newplcdcs, we specialize in providing high-quality spare parts for Distributed Control Systems (DCS) and Programmable Logic Controllers (PLC). Our comprehensive product portfolio includes parts from approximately 20 leading brands, such as ABB, Bently Nevada, Honeywell, GE, Yokogawa, Allen Bradley, Foxboro, Ovation, Hima, Emerson, Triconex, Woodward, ICS Triplex, Bachmann, and Schneider. This focused expertise allows us to offer in-depth solutions in the automation sector, setting us apart from many competitors and ensuring we deliver the most advanced and reliable products to our clients.

Contact Information

Email: [email protected]
TEL: +86 13822101417

Frequently Asked Questions
Is our price competitive?
Newsplcdcs collaborates with over 50 countries worldwide. as a leading supplier in china, we can provide significant discounts to customers based on market demand.
What is the warranty period?
We offer a standard one-year warranty for all new and original items.
What payment methods do we accept?
We accept 100% t/t (telegraphic transfer) before shipping. for items with a lead time, a 30% deposit is required in advance, with the remaining 70% balance due before shipping. if you have an agent in china, please contact us for rmb transfer.
What shipping methods do we use?
We primarily utilize carriers such as fedex, dhl, ups, bre, etc. if you have an account with any of these carriers, you can arrange the shipping yourself. additionally, we offer free shipping to china freight forwarders.
What is our delivery time?
Typically, delivery takes around 1-3 days after receiving the advance payment. for items with a quoted lead time, delivery will occur as per the specified lead time.
How do we package the goods?
Our packaging process involves multiple layers of protection. initially, the product is placed in its original box, sealed with a label. then, we add a layer of bubble wrap to safeguard against collisions during transportation. finally, all products are securely packed in sturdy boxes for further protection.
How can customers contact us and request a quote?
Customers can inquire via email, whatsapp, wechat, skype, or any preferred communication platform. simply reach out to us, and we’ll promptly provide a quote tailored to your needs.