Intelligent motor protector ARD3-250 standard protective transformer Ankerui factory direct sales

Description :

　　ARD series intelligent low-voltage motor protector

　　1 Overview

　　The ARD series low-voltage motor protector has protection functions such as overload, phase failure, imbalance, underload, grounding/leakage, and locked rotor. It can form a motor control and protection unit with electrical components such as contactors and motor starters, and has functions such as remote automatic control, on-site direct control, panel indication, signal alarm, and fieldbus communication. It can be widely applied in the field of power distribution in industries such as coal mining, petrochemicals, smelting, electricity, and construction.

　　2 Product selection

　　2.1 Digital motor protector

　　Model Description

　　rated current

　　Table 1

　　Additional instructions for rated current

　　Table 2

　　Note: Low voltage motors with a rated current greater than 250kW can use 800A level motor protectors when the rated current is less than 800A.

　　Starting method

　　Table 3

　　Note:

　　1. Manual mode: The protector participates in the control, and the starting mode is direct starting (full pressure starting). When starting in both directions, the protector is set to manual mode.

　　2. Two step mode: When the protector participates in control and the starting mode is star/delta starting (two relays) or autotransformer (two relays), the protector is set to two-step mode.

　　Additional features

　　Table 4

　　Note: 1. "√" indicates optional additional functions.

　　2. The measurement range of temperature protection is from 100 Ω to 30k Ω for thermal resistance.

　　display mode

　　Table 5

　　Note: For customers without display requirements, a 90L display unit must be ordered in a batch order for debugging purposes.

　　Product Specifications

　　Note:

　　1. ■ "is a standard feature, and" □ "is an optional feature.

　　2. The optional voltage loss lifting (anti shaking) function includes voltage and fault recording functions.

　　technical indicators

　　2.2 ARD2F and ARD3 motor protectors

　　Appearance and installation dimensions (unit: mm)

　　Main module

　　display unit

　　Anti vibration module

　　AC380V power module

　　mutual inductor

AfterSalesService :

• 智能电动机保护器