STAMFORD MX341-2 E000-23410+45-0053 PE9 2NB Automatic Voltage Regulator

Overview

STAMFORD MX341-2 E000-23410+45-0053 PE9 2NB is a two-phase sensing automatic voltage regulator for Stamford brushless alternator with PMG excitation system. STAMFORD MX341-2 E000-23410+45-0053 PE9 2NB obtains excitation power from the built-in permanent magnet generator, independently controls exciter stator current, stabilizes generator output voltage under changing load, speed and power factor conditions. This STAMFORD MX341-2 E000-23410+45-0053 PE9 2NB is widely stocked as spare excitation control unit for diesel generator power assemblies.

Features

STAMFORD MX341-2 supports soft-start voltage build-up function, which makes generator voltage rise smoothly and avoids voltage impact at startup. It has under-frequency roll-off protection, reduces excitation output when engine speed drops below preset threshold to prevent generator over-excitation damage. MX341-2 reserves droop CT connection terminal for parallel operation of multiple generators, and supports external 1kΩ trimmer for remote fine adjustment of output voltage. It also provides analog input interface for matching power factor controller. The unit integrates over-excitation fault lockout protection, and cuts off excitation output after sustained fault. This AVR adopts screw terminal connection, with compact epoxy encapsulated PCB board, good vibration and moisture resistance. It is CE, UKCA and CSA compliant, designed for 24/7 continuous operation on industrial diesel genset, marine generator and standby power alternator. The suffix PE9 2NB represents configuration and batch code.

Specifications

STAMFORD MX341-2 AVR Brand: STAMFORD Cummins Generator Technologies Model: MX341-2 Part code: E000-23410+45-0053 PE9 2NB Type: PMG excitation automatic voltage regulator Sensing input: 190~264VAC single phase, 50/60Hz PMG power input: 140~220VAC three phase, 100~120Hz Excitation output: max 120VDC, continuous 2.7A, transient 6A for 10s Field load minimum resistance: 15Ω Voltage regulation accuracy: ±1% RMS Soft start time: approx 3s Response speed: 10ms typical External adjustment: 1kΩ remote trimmer Parallel function: droop CT compatible Protection: under frequency roll-off, over-excitation latch shutdown Mounting: chassis mounting inside alternator terminal box Protection class: encapsulated circuit board Ambient temperature: -20℃ ~ +60℃ Status: genuine Stamford generator spare AVR

Principle

STAMFORD MX341-2 E000-23410+45-0053 PE9 2NB samples generator terminal voltage signal. This Automatic Voltage Regulator compares the sampled voltage with internal reference value, adjusts the average excitation current of exciter stator. The PMG provides independent excitation power supply, which is not affected by distortion and fluctuation of main generator output. When frequency or excitation current exceeds safe limit, the protection circuit acts to limit or shut down excitation.

Applications

STAMFORD MX341-2 E000-23410+45-0053 PE9 2NB is deployed in Stamford brushless alternators for industrial standby gensets, marine power generators, data center backup power and off-grid power generation systems. It provides stable voltage regulation and excitation protection. STAMFORD MX341-2 E000-23410+45-0053 PE9 2NB is stocked as spare AVR for generator excitation control assemblies.