What is the difference between ESR-48/56BC and ESR-48/56AC, and can they be intermixed?

The ESR-48/56BC is an enhanced ruggedized model featuring wider temperature range and 6kV surge immunity. Form factor and pinouts are mechanically compatible, but for optimal current sharing, running identical models in parallel is recommended. For bench test verification, pinout diagrams, and custom warranty terms, contact our engineering desk via WhatsApp +86 17621197907.

How to handle a red alarm LED and shutdown following a severe thunderstorm?

Disconnect the AC breaker and remove the module. Inspect for blown input fuses or thermal damage on internal surge arrestors. Re-seat and restore AC power; if failure persists, replace with a verified spare unit. For bench test verification, pinout diagrams, and custom warranty terms, contact our engineering desk via WhatsApp +86 17621197907.

Does the module require pre-heating when cold-started at -30°C in winter?

No pre-heating is required. The ESR-48/56BC supports native cold-starts down to -40°C, smoothly ramping up to full rated DC voltage within 3 seconds. For bench test verification, pinout diagrams, and custom warranty terms, contact our engineering desk via WhatsApp +86 17621197907.

DeltaМодель: ESR-48/56BC

Delta ESR-48/56BC Wide-Temperature Telecom Switch-Mode Rectifier Module (-48V 56A 3000W)

The Delta ESR-48/56BC is a ruggedized 48V 56A high-reliability telecom switch-mode rectifier module rated at 3000W, engineered for extreme temperatures and featuring enhanced surge immunity.

Цена определяется конфигурацией и объёмом проекта

Запросить предложение

Nominal Output Voltage: -48V DC (Adjustable: -42V to -58V)
Rated Output Current: 56A Continuous Output
Rated Output Power: 3000W
AC Input Range: 85V to 300V AC (Nominal 220VAC)
Operating Temperature Range: -40°C to +75°C (Full load to 55°C)
Protection & Mounting: 6kV Surge Immunity / Hot-Swap

Что это за продукт

This unit is primarily deployed within Delta outdoor enclosures and indoor telecom power racks, providing high-purity -48V DC power with superior lightning surge immunity.

Какую задачу решает

Solves outdoor base station vulnerabilities such as extreme ambient heat and grid lightning surges causing premature rectifier failure, ensuring high uptime for unattended sites.

Для кого и каких условий

Engineered for 4G/5G outdoor integrated cabinets, remote border station towers, highway surveillance power systems, and utility substation communications.

Ключевые преимущества

Extreme Temperature Tolerance: Operates reliably from -40°C to +75°C, sustaining 100% full rated power up to 55°C ambient.
Enhanced Lightning Surge Immunity: Integrated multi-stage surge protection circuit withstands up to 6kV common and differential mode transients.
Advanced Digital DSP Control: Embedded DSP delivers precise autonomous load-sharing, sub-millisecond dynamic response, and low THD.
High Power Density Compact Footprint: Optimizes subrack space, maximizing room for backup batteries and transmission hardware.

Технические характеристики

Ключевые параметры	Значение
Nominal Output Voltage	-48V DC (Adjustable: -42V to -58V)
Rated Output Current	56A Continuous Output
Rated Output Power	3000W
AC Input Range	85V to 300V AC (Nominal 220VAC)
Operating Temperature Range	-40°C to +75°C (Full load to 55°C)
Protection & Mounting	6kV Surge Immunity / Hot-Swap