Schneider Electric V321-ABGAA-DDANA-B3 protection relay

The Schneider Electric V321-ABGAA-DDANA-B3 microprocessor relay from the VAMP 321 series is designed for ultra-fast detection and response to arc faults in medium- and low-voltage switchgear. The system ensures minimal tripping times, significantly reducing equipment damage and improving personnel safety.

The relay uses a combined detection principle based on the analysis of arc light and short-circuit current, minimizing the likelihood of false alarms. The device supports the connection of multiple fiber optic and point arc sensors, providing protection for various compartments of switchgear cabinets.

The VAMP 321 series is widely used in the power generation, oil and gas, metallurgy, data centers, and industrial facilities where high-speed switchgear protection is required.

Order code V321-ABGAA-DDANA-B3 explanation:

V321 is a VAMP 321 series microprocessor relay.

A — Supply voltage 110-240 V.

B — I/O board 1: 3BIO + 2 arc sensors.

G — I/O board 2: 6DI + 4DO.

A — None.

A — None.

D — Additional I/O board 1: 4 arc sensors.

D — Additional I/O board 2: 4 arc sensors.

A — Analog measurement board: 3L+U+Io.

N — Communication interface 1: 2xRJ45 (Ethernet RJ 100 Mbps, RSTP).

A — Communication interface 2: None.

B — Display type: 128x128.

3 — Discrete input rated voltage: 220 VDC.

Main technical specifications:

Parameter Value

Manufacturer: Schneider Electric

Series: VAMP 321

Model: V321-ABGAA-DDANA-B3

Device type: Arc protection relay

Purpose: Arc detection

Operating principle: Light + current

Sensor connection: Fiber optic and point sensors

Response time: Less than 1–7 ms (depending on configuration)

Communication interfaces: Depending on version

Power supply: 100…240 V AC/DC (depending on version code)

Mounting: Panel-mounted or control cabinet-mounted

Protection rating: IP20

Operating temperature: -25…+55 °C

Application: Low-voltage and medium-voltage switchgear

Operating parameters and installation conditions:

The relay is designed for installation in:

Switchgear assemblies (SWG);

Low-voltage distribution boards;

Motor control cabinets (MCC);

Bus sections and feeder panels;

Power and industrial facilities.

For maximum efficiency, it is recommended to place arc sensors directly in the protected compartments: cable, busbar, and circuit breaker sections.

Key functions:

Ultra-fast arc fault detection;

Minimized equipment damage;

Reduced downtime;

Emergency event recording;

System self-diagnostics;

Support for multiple protection zones;

Integration into existing relay protection systems.

Typical applications:

Medium-voltage substations.

0.4–35 kV switchgear.

Motor control centers (MCC).

Oil and gas facilities.

Metallurgy plants.

Power plants and energy facilities.

Data centers.

Ordering Information:

Parameter Value

Part Number V321-ABGAA-DDANA-B3

Series VAMP 321

Manufacturer Schneider Electric

Type Arc Flash Protection Relay

Related Components:

VX001-5 VAMP Cable 5m for P3/VAMP

The VAMP 321 series is part of Schneider Electric's family of modular arc protection systems and is designed to improve the operational safety of switchgear.