191

ALP300 保护器

ALP300 Protector

安装使用说明书 V1.6

Installation and Operation Instruction V1.6

安科瑞电气股份有限公司

Acrel Co.，Ltd.

申 明

DECLARATION

版权所有，未经本公司之书面许可，此手册中任何段落，章节

内容均不得被摘抄、拷贝或以任何形式复制、传播，否则一切后果

由违者自负。

本公司保留一切法律权利。

No part of this publication may be reproduced, stored in a

retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise

without prior permission of Acrel. All rights reserved.

本公司保留对本手册所描述之产品规格进行修改的权利，恕不

另行通知。订货前，请垂询当地代理商以获悉本产品的最新规格。

This company reserve power of revision of product specification

described in this manual, without notice. Before ordering, please

consult local agent for the latest specification of product.

目 录

CONTENTS

ALP300 保护器

ALP300 Protector

1 概述 Overview................................................................................................................................ 1

2 产品型号 Product type...................................................................................................................1

3 通用技术指标 General technical index........................................................................................ 2

4 外形尺寸及安装 Overall dimensions and installation................................................................3

5 显示与用户编程 Display and user programming.......................................................................5

6 接线方式 Wiring Mode................................................................................................................10

7 通讯协议 Communication protocol............................................................................................10

8 典型应用方案 Typical application scheme.............................................................................. 22

9 保护功能设置及说明 Setting and description of protection functions.................................24

10 注意事项 Cautions.................................................................................................................... 28

11 订货范例 Order sample............................................................................................................. 29

警告：用户在使用该保护器之前，请务必按所要保护电动机的实际情况对各项保护功能及

保护参数进行设置。

Warning. User must set protective functions and parameters in accordance with conditions of

your motor before using the protector.

1

1 概述 Overview

ALP300 保护器（以下简称保护器），采用最新的单片机技术，具有抗干扰

能力强、工作稳定可靠、数字化、智能化等特点。保护器能对电动机运行过程

中出现的起动超时、过压、欠压、过载、断相、不平衡、欠载、接地/漏电、阻

塞、短路、外部故障等多种情况进行保护，现场维护人员可通过数码管显示屏

快速查找故障原因。本保护器具有 RS485 远程通讯接口，DC4～20mA 模拟量

输出，方便与 PLC、PC 等控制机组成网络系统，实现电动机运行的远程监控。

ALP300 protector (hereinafter referred to as protector) adopts the latest single-chip

microcomputer technology and has features of strong capacity of resisting

disturbance, stable and reliable working, digitization and intellectualization and so

on. The protector can protect the motor during operation in case of overtime starting, under-voltage, over-voltage, over-load, open phase, unbalance, under-load, ground/electric leak, blocking, short circuit and external faults and so on. The field

maintenance personnel may rapidly find the fault cause with the digit display. The

protector has RS485 remote communication interface and DC4 ～ 20mA analog

quantity output to compose the network system with PLC and PC control units and

to achieve remote monitoring of motor operation.

2 产品型号 Product type

ALP300

附加功能：C-通讯 M-变送 K-开关量 J-报警 L-漏电

电流规格：5,25,100

公司代号

2

ALP300

Additional function：C-Communication

M-transformation K-Switching J-Alarm L-Leakage

Current specification：5,25,100

Company name：Acrel Co.,Ltd

表 1

Table 1

电流规格

Current specification可设定额定电流

Set rated current

5

1-6000(设置变比)

1-6000(Ratio setting)

25 6-25

100 25-60

注：100A 电流规格的 ALP300 保护器，只适用于额定电流小于 60A 的电动机，额定电流

大于 60A 的电机推荐选用 5A 规格的保护器。选择 100A 规格时，推荐使用 6-10 平方的铜

芯电缆线。

Note:100A current specification protector only suit for the motor with rated current less than

60A.Motor with rated current greater than 60A is recommended to use 5A protector.When

choosing 100A specification,it is recommended to use 6-10 square millimeter copper core cable.表 2

Table 2

附加功能

Additional function

代号

Code附加功能

Additional function

代号

Code通讯接口

Communication

interface

C

4～20mA 模拟量输出

Analog output 4-20mA M

漏电保护

Leakage protection

L

报警输出（可编程 2）

Alarm output

(programmable 2)

J

2 路开关量输入；1 路继电器输出（可编程 3）

2-way switching input, 1-way relay output (programmable 3) K

3 通用技术指标 General technical index

表 3

Table 3

技术参数

Technical parameters

技术指标

Technical specification

保护器辅助电源

Auxiliary power supply of protector

AC85V~265V

电机额定工作电压

Rated working voltage of motor

AC380V，50Hz/60Hz继电器输出触点，额定负载容量

Rated working voltage of motor, rated

load capacity

4 路 AC250V，3A；DC30V，3A

4-way, AC250V,3A;DC30V,3A

开关量输入

Switching input

2 路，光电隔离

2-way, optical isolation

通讯

Communication

RS485 Modbus 协议

RS485 Modbus Protocol

环境

Environment

工作温度 Working temperature -10ºC～55ºC

贮存温度 Storage temperature -20ºC～65ºC

3

相对湿度 Relative humidity

5﹪～95﹪不结露

5%-95%, no dew

海拔 Altitude ≤ 2000m污染等级

Class of pollution

2

防护等级

Protection level IP30

4 外形尺寸及安装 Overall dimensions and installation

4.1 保护器安装尺寸图（单位：mm）Installation dimensions of protector(Unit: mm)

主视图 Front view

左视图 Left view

俯视图 Overlook view

4.2 漏电互感器安装尺寸

Installation dimensions of zero sequence current transformer

4

互感器部分

Zero sequence current transformer

尺 寸

Size规格

Standard

额定电流

(A)

Current specification

(A)

外形尺寸(mm)

Outline dimension(mm)

穿孔尺寸(mm)

Perforation Size(mm)

安装尺寸(mm)

Installation Size(mm)

公差

(mm)

Tolerance

(mm)

重量

（g）

Weight

W H D Φ M N Φ2 （g）

L-45 16-100 75 75 22 46 65 65 4

±1

200±10

L-80 100-250 120 120 23 81 105 105 4 380±20

L-150 400-800 196 205 24 150 175 180 6 850±50

4.3 安装方法 Installation method

导轨安装方式 螺丝固定方式

installed by the guide rail fixed by screws

注：ALP300 保护器可以采用导轨安装，直接卡接在 35mm 导轨上；或采

用 M3 螺丝固定方式安装，其中螺丝长度应大于等于 12mm。

5

Note: the ALP300 protector may be installed by the guide rail and is directly

clamped on 35mm guide rail; or the protector is fixed by M3 screws. The screw shall

be no less than 12mm. 5 显示与用户编程 Display and user programming

5.1 数码管显示说明 Description of LED display

表 4

Table 4

序号

No.名称

Name状态

Status功能说明

Functional description

1

A 相 LED 指示灯

A-phase LED

indicator亮/灭

On/Off

亮表明显示的值为 A 相电流

If the indicator is ON, it indicates that the displayed

value is A-phase current

2

B 相 LED 指示灯

B-phase LED

indicator亮/灭

On/Off

亮表明显示的值为 B 相电流

If the indicator is ON, it indicates that the displayed

value is B-phase current

3

C 相 LED 指示灯

C-phase LED

indicator亮/灭

On/Off

亮表明显示的值为 C 相电流

If the indicator is ON, it indicates that the displayed

value is C-phase current

4 Run LED 指示灯

Run LED indicator亮/灭

On/Off

亮表明电动机处于运行状态

If the indicator is ON, it indicates that the motor is at operation state 5 Trip LED 指示灯

Trip LED indicator亮/灭

On/Off

亮表明电动机发生故障，A 脱扣继电器已动作

If the indicator is ON, it indicates that the motor has a

fault and A tripping relay has already acted. 6 Alarm LED 指示灯

Alarm LED indicator亮/灭

On/Off

亮表明 A 报警，A 已报警

If the indicator is ON, it indicates A alarms, A has already alarmed

7 确定键

Confirm button

按下Hold down

进入菜单，设定状态下确认修改的参数

Enter the menu and confirm the modified parameter under the set condition

8 方向键

Arrow key

按下Hold down

上翻菜单或更改数据值

Drop up the menu or change the data 9 方向键

Arrow key

按下Hold down 下翻菜单或更改数据值

Drop down the menu or change the data 10 取消键

Cancel button

按下Hold down

退出菜单或取消修改操作或将 A 复位

Exit the menu, delete the modifying operation or reset A

11

4 位 LED 数码管

4-bit LED digit tube 0000

显示各种测量参数、设置参数及故障类型

Display all measured parameters, set parameters and

fault types注

Notes A、B、C 相指示灯

A, B and C-phase

indicator全亮

All ON

指示灯全亮则表明显示的值为三相平均电流

If all indicators are ON, it indicates that the displayed

value is the three-phase mean current. 5.1.1 用户编程 User programming

6

按保护器上的“ ”键，至显示“P001”，按“ ”键和“ ”键用于菜单的选择，

到相应的菜单序号后，按“ ”键，进入值域的设置，按“ ”键进行数据位的选

择，按“ ”键用于数字的增加，所需参数设置完毕后，按“ ”键进行保存，再

按“ ”键退出菜单。其中，保护器的各种保护功能的打开与否用“ON”“OFF”表

示。参数设置见下表：

Press “ ” key on the protector until “P001” is displayed. Press “ ” key and “ ” key to

select the menu. Enter the corresponding menu number, press “ ” key and enter the

setting of range. Press “ ” key to select the data bit. Press “ ’ key to increase the number. After all parameters are set, press “ ” key to save the settings. Later, press “ ” to exit the

menu. The on and off of all protection functions of protector are expressed by “ON” and “OFF”. For the parameter setting, see the table below:

面板参数

Parameter设定类别

Class setting

默认值

Default value设定范围

Setting ranges单位

Unit

P001 额定电流

Rated current

1.6

0.1-6000.0 安培

A

P002

定时限过载阈值

Constant time lag over-load

threshold

150

100-700

%

P003

过载报警值

Overload alarm threshold

90 1-700 %

P004

定时限过载延时

Constant time lag over-load

delayed

5 0.1-600.0 秒 Second

P005 欠载脱扣阈值

Under-load tripping threshold

50 10-99 %

P006 欠载报警阈值

Under-load alarm threshold

50 10-99 %

P007 欠载脱扣延时

Under-load tripping delayed

5 0.1-600.0 秒

Second

P008 漏电故障电流

Leakage fault current

300 30-1000 毫安

Milliampere P009 漏电报警电流

Leakage alarm current

300 30-1000 毫安

Milliampere P010 接地脱扣百分比

Earthing tripping percentage 80 20-100 %

P011 接地报警百分比

Earthing alarm percentage 60 20-100 %

P012

接地/漏电脱扣延时

Earthing/ leakage tripping

delayed

0.5 0.1-600.0 秒

Second

P013 不平衡脱扣阈值

Unbalance tripping threshold

30 10-99 %

P014 不平衡报警阈值 Unbalance 20 10-99 %

7 alarm threshold P015 不平衡脱扣延时 Unbalance tripping delayed 5 0.1-600.0 秒Second P016 短路脱扣阈值 Short-circuit tripping threshold 400 400-700 % P017 短路报警阈值 Short-circuit alarm threshold 400 400-700 % P018 短路脱扣延时 Short-circuit tripping delayed 0.1 0.1-600.0 秒Second P019 阻塞脱扣阈值 Blocking tripping threshold 250 100-700 % P020 阻塞报警阈值 Blocking alarm threshold 250 100-700 % P021 阻塞脱扣延时 Blocking tripping delayed 5 0.1-600.0 秒Second P022堵转脱扣阈值 Locked-rotor tripping threshold 600 100-700 % P023堵转报警阈值 Locked-rotor alarm threshold 600 100-700 % P024堵转脱扣延时 Locked-rotor tripping delayed 5 0.1-600.0 秒Second P025断相脱扣延时 Phase failure tripping delayed 1 0.1-600.0 秒Second P026外部故障脱扣延时 External fault tripping delayed 5 0.1-600.0 秒 Second P027过压脱扣阈值 Over-voltage tripping threshold 120 110-150 % P028过压脱扣延时 Over-voltage tripping delayed 5 0.1-600.0 秒Second P029欠压脱扣阈值 Under voltage tripping threshold 80 55-90 % P030欠压脱扣延时 Over-voltage tripping delayed 5 0.1-600.0 秒Second P031漏电互感器投入 Electric leakage transformer input 0 0-1 P032反时限过载脱扣允许Inverse time limit over-load tripping allowed ON OFF/ON P033 接地脱扣允许Grounding tripping allowed OFF OFF/ON P034漏电脱扣允许Electric leakage tripping allowed OFF OFF/ON P035 欠载脱扣允许Under-load tripping allowed OFF OFF/ON P036 断相脱扣允许Open phase tripping allowed ON OFF/ON P037堵转脱扣允许Locked rotor tripping allowed OFF OFF/ON P038 阻塞脱扣允许Blocking tripping allowed OFF OFF/ON

8

P039 不平衡脱扣允许

Unbalanced tripping allowed OFF OFF/ON

P040

外部故障脱扣允许

External fault tripping

allowed

OFF

OFF/ON

P041

起动超时脱扣允许

Start timeout tripping

allowed

ON

OFF/ON

P042 短路脱扣允许

Short circuit tripping allowed OFF OFF/ON

P043

定时限过载脱扣允许

Constant time lag tripping

allowed

OFF

OFF/ON

P044

过压脱扣允许

Over-voltage tripping

allowed

OFF

OFF/ON

P045

欠压脱扣允许

Under-voltage tripping

allowed

OFF

OFF/ON

P046

反时限过载报警允许

Inverse time lag over-load

alarm allowed

OFF

OFF/ON

P047 断相报警允许

Open phase alarm allowed OFF OFF/ON

P048 阻塞报警允许

Blocking alarm allowed OFF OFF/ON

P049 不平衡报警允许

Unbalanced alarm allowed OFF OFF/ON

P050 外部故障报警允许

External fault alarm allowed OFF OFF/ON

P051

定时限过载报警允许

Constant time lag over-load

alarm allowed

OFF

OFF/ON

P052

可编程 1 继电器输出设定

Programmable 1 relay output setting

10

0 远程起动 1 报警 2 脱扣 3 过载 4 短路

5 接地/漏电脱扣 6 断相 7 外部故障 8 漏

电报警 9 短路、接地保护 10 短路、接

地/漏电 11 短路、接地/漏电（脉冲 1s）

0. remote starting 1.alarm 2.trip

3.overload 4.short circuit

5.earthing/leakage trip 6. phase failure 7. xternal fault 8. leakage alarm 9. short circuit and earthing protection 10.short circuit, leakage/earthing 11. short circuit, leakage/earthing (pulse: 1s)

P053

可编程 2 继电器输出设定

Programmable 2 electric

relay output setting

1

同上

Ditto P054

可编程 3 继电器输出设定

Programmable 3 electric

relay output setting

0

同上

Ditto P055

脱扣等级

Overload/ full-load rated

current setting

5

1、2、3、5、10、15、20、25、30、35、

40

级 Level

P056 MODBUS 波特率

Baud rate of MODBUS

3-1920

0

0-2400，1-4800，2-9600，3-19200，

4-38400

bps P057 MODBUS 地址

MODBUS address 1

1-247

9

P058 CT 变比

CT transformation ratio

1

1-6300（1990）

P059 起动时间

Starting time 10

0.1-600.0 秒

Second

P060 次级电流值

Secondary current value 5A 1、5A

P061 冷却时间

Cooling time 0

0-30 分

Minutes P062 过压报警阈值

Over-voltage alarm threshold

110 110-150 %

P063

欠压报警阈值

Under voltage alarm

threshold

90 55-90 %

P064 接地报警允许

Earthing alarm allowed OFF OFF/ON

P065 漏电报警允许

Leakage alarm allowed OFF OFF/ON

P066 欠载报警允许

Under-load alarm allowed OFF OFF/ON

P067 堵转报警允许

Locked rotor alarm allowed OFF OFF/ON

P068 起动超时报警允许

Start timeout alarm allowed OFF OFF/ON

P069 短路报警允许

Short circuit alarm allowed OFF OFF/ON

P070 过压报警允许

Over-voltage alarm allowed OFF OFF/ON

P071 欠压报警允许

Under-voltage alarm allowed OFF OFF/ON

5.1.2 查看数据 View data

测量数据查看：用户可按动 “ ”键，切换显示三相平均电流、A 相电流、

B 相电流、C 相电流、漏电流或接地电流百分比、电压、开关量输入。

View measured data: the user may press “ ” key to shift the display of three-phase mean

current, A-phase current, B-phase current, C-phase current, leakage current or grounding current

percentage, voltage and switching input.故障显示说明：

Description of fault display:

表 6

Table 6

显示

Message故障原因

Fault cause hEAt 过载

Overload

oUdf 接地/漏电

Earthing/leakage UdCU 欠载

Under-load

LoPh 断相

Phase failure StAl 堵转

Locked-rotor JA 阻塞

Blocking

CUIb 电流不平衡

Current unbalance oUtE 外部故障

10

External fault

Stot 起动超时

Starting time-out shor短路

Short circuit ouuo过压

Over-voltage Uduo 欠压

Under-voltage ouCU 定时限过载

constant time lag over-load

6 接线方式 Wiring Mode

6.1 电源接线 Auxiliary power supply

辅助电源 Auxiliary power supply

6.2 继电器输出 Relay output

脱扣 脱扣（可编程 1） 报警（可编程 2） 可编程 3

Trip trip (programmable 1) Alarm(programmable 2) programmable 3

6.3 RS485 通讯 RS485 communication

RS485

6.4 DC4～20mA 模拟量输出 Analog output DC4-20mA

DC4～20mA

6.5 开关量输入 Switching input

6.6 零序电流输入 Input of zero-sequence current

7 通讯协议 Communication protocol

7.1 通讯协议概述 Overview of communication protocol

保护器使用 MODBUS-RTU 通讯协议，MODBUS-RTU 协议详细定义了校

验码、数据序列等，这些都是特定数据交换的必要内容。MODBUS-RTU 协议

在一根通讯线上使用主从应答式连接（半双工），这意味着在一根单独的通讯线

上信号沿着相反的两个方向传输。首先，主计算机的信号寻址到一台唯一的终

11

端设备（从机），然后，终端设备发出的应答信号以相反的方向传输给主机。

MODBUS-RTUcommunication protocol is adopted for the protector. MODBUS-RTU protocol defines the check code and data series and so on in details. These are the required contents for specific data exchange. MODBUS-RTU protocol

uses the master-slave response connection (half-duplex) on one communication line, which means the signals on one single communication line are transmitted along

two inverse directions. First, the signals on the master computer finds one unique

terminal equipment (slave computer) by addressing. Later, the answering signal

from the terminal equipment is transmitted to the master computer along the inverse

direction. MODBUS-RTU 协议只允许在主机（PC，PLC 等）和终端设备之间通讯，

而不允许独立的终端设备之间的数据交换，这样各终端设备不会在它们初始化

时占据通讯线路，而仅限于响应到达本机的查询信号。

MODBUS-RTU protocol only allows the communication between the master computer (Pc

and PLC) rather than the data exchange among the separate terminal equipment. Thus, all

terminal equipment will not occupy the communication line during initialization but only

responds to the query signals arrived. 7.1.1 传输方式 Transmission mode

信息传输为异步方式，并以字节为单位，在主机和从机之间传递的通讯信

息是 11 位字格式，包含 1 个起始位、8 个数据位（最小的有效位先发送）、无

奇偶校验位、1 个停止位。

Asynchronous mode is adopted for the information transmission and byte is used as

the unit. The communication information transmitted between the master computer

and slave computer is in 11-bit word format, including 1 start bit, 8 data bits (the

minimum effective bit is transmitted first), no parity check code and 1 stop bit. 7.1.2 信息帧格式 Information frame format

地址码

Address code功能码

Function code数据区

Data field

CRC 校验码

CRC check code 1 字节 1 字节 n 字节 2 字节

地址码：地址码在帧的开始部分，由一个字节（8 位二进制码）组成，十

进制为 0～255，在 ALP300 中只使用 1-247,其它地址保留。这些位标明了用户

指定的终端设备的地址，该设备将接收来自与之相连的主机数据。每个终端设

备的地址必须是唯一的，仅仅被寻址到的终端会响应包含了该地址的查询。当

终端发送回一个响应，响应中的从机地址数据便告诉了主机哪台终端正与之进

行通信。

Address code: the starting part of address code in the frame is composed of one byte

(8-bit binary code). The decimal is 0～255, 1-247 are only used in ALP300 and

other addresses are saved. These bits mark the address of terminal equipment

designed by the user. The equipment will receive the data from the connected master

computer. Each terminal equipment address must be unique and the only the

addressed terminal will respond to the address request. When the terminal sends a

response, the slave computer address data in the response will tell which terminal of

12

the master computer conducts the communication.功能码：功能码告诉了被寻址到的终端执行何种功能。下表列出了 ALP300

用到的功能码，以及它们的意义和功能。

Function code: the function code indicates which the addressed terminal performs

what kind of function. The function codes used in the ALP300and the meanings and

functions are listed in the table below.功能 Function 定义 Definition 操作 Operation

03H/04H 读数据寄存器 Read data register 获得一个或多个寄存器的当前二进制值

Get one or multiple registers’ current binary value 10H 预置多寄存器

Preset multiple registers设定二进制值到一系列多寄存器中

Set binary value in a series of multiple registers 06H 预置单个寄存器

Preset single register设定二进制值到单个寄存器中

Set binary value in single register数据区：数据区包含了终端执行特定功能所需要的数据或者终端响应查询

时采集到的数据。这些数据的内容可能是数值、参考地址或者设置值。例如：

功能码告诉终端读取一个寄存器，数据区则需要指明从哪个寄存器开始及读取

多少个数据，内嵌的地址和数据依照类型和从机之间的不同内容而有所不同。

Data field: the data field includes the data required for the terminal executing the

specific functions or data acquired for the terminal response query. The data may be

value, reference address or set value. E.g.: the function code tells the terminal to read

one register. The data area needs to specify which register begins and reads how

many data. The embedded address and data may be different according to the types

and different contents of the slave computer. CRC 校验码：错误校验（CRC）域占用两个字节，包含了一个 16 位的二

进制值。CRC 值由传输设备计算出来，然后附加到数据帧上，接收设备在接收

数据时重新计算 CRC 值，然后与接收到的 CRC 域中的值进行比较，如果这两

个值不相等，就发生了错误。

CRC check code: error check (CRC) field occupies two bytes and includes one

16-bit binary value. CRC value is calculated by the transmission equipment and then

is added to the data frame. The receiving equipment will calculate CRC value when

receiving the data. Later, it will compare the calculated value with the value in the

CRC field. If two values are not equal, there is an error.生成一个 CRC 的流程为：

One CRC process generated is:

（1）预置一个 16 位寄存器为 0FFFFH（全 1），称之为 CRC 寄存器。

(1) Preset one 16-bit register, that is, 0FFFFH (full 1). It is known as CRC register. （2）把数据帧中的第一个字节的 8 位与 CRC 寄存器中的低字节进行异或运算，

结果存回 CRC 寄存器。

(2) Conduct the exclusive or operation with the 8 bits of the first byte in the data

frame and low byte of CRC register. The result is saved in CRC register. （3）将 CRC 寄存器向右移一位，最高位填以 0，最低位移出并检测。

(3) Shift the CRC register to the right with one bit. Write 0 in the highest bit, shift

out the lowest bit and conduct the detection. （4）如果最低位为 0，重复第三步（下一次移位）；如果最低位为 1，将 CRC

寄存器与一个预设的固定值（0A001H）进行异或运算。

(4) If the lowest bit is 0, repeat step 3 (shift next time); if the lowest bit is 1, conduct

13

the exclusive or operation with the CRC register and one preset fixed value

(0A001H). （5）重复第三步和第四步直到 8 次移位，这样处理完了一个完整的八位。

(5) Repeat Steps 3 and 4 to shift for the 8

th

time. Thus, a full eight-bit data is

handled. （6）重复第 2 步到第 5 步来处理下一个八位，直到所有的字节处理结束。

(6) Repeat Step 2 to Step 5 to handle the next eight bits until all bytes are handled. （7）最终 CRC 寄存器的值就是 CRC 的值。

(7) The final CRC register value is CRC value.此外还有一种利用预设的表格计算 CRC 的方法，它的主要特点是计算速度

快，但是表格需要较大的存储空间，该方法此处不再赘述，请参阅相关资料。

In addition, CRC will be calculated with the default form. It has main features of

rapid calculation speed and larger storage space. This method is not described here

and you may refer to the relevant information. 7.2 功能码简介 Introduction to function code

7.2.1 功能码 03H 或 04H：读寄存器 Function code 03H or 04H: read register

此功能允许用户获得设备采集与记录的数据及系统参数。主机一次请求的

数据个数没有限制，但不能超出定义的地址范围。

With the function, the user is allowed to acquire the data acquired and recorded data

and system parameters. The number of data requested by the master computer at a

time is not limited but is not beyond the defined address range.下面的例子是从 01 号从机读 3 个采集到的基本数据（数据帧中每个地址占

用 2 个字节）L1、L2、L3，其中 L1 的地址为 0000H, L2 的地址为 0001H，L3

的地址为 0002H。

The following examples show 3 basic data read by No. 01 slave computer (each

address of the data frame occupies 2 bytes) L1, L2 and L3. L1 address is 0000H, L2

address is 0001H and L3 address is 0002H. 7.2.2 功能码 10H：写寄存器

Function code 10H: read register

功能码 10H 允许用户改变多个寄存器的内容，该仪表中系统参数、继电器

输出状态等可用此功能号写入。主机一次最多可以写入 8 个（16 字节）数据。

The function code 10H allows the user to change the contents of multiple registers. The instrument system parameters and output state may be written in by the function. The master computer may write 8 (16 bytes) data at most at a time.下面的例子是预置地址为 01 的仪表输出开关量DO2。开关量输入/输出状

态指示寄存器地址为 0003H，第 0-1 位对应DI1-DI2，第 8-11 位分别对应

DO1-DO4。

The instrument switching output DO2 with 01 preset address is shown below. The

switching input/output state indicator register address is 0003H, the 0-1 bits

correspond to DI1-DI2, and the 8-11 bits respectively correspond to DO1-DO4.主机发送

Information sent by the master unit

发送信息

Code从机返回

Information sent by the slave unit

返回信息

Code地址码 Address code 01H 地址码 Address code 01H

功能码 Function code 10H 功能码 Function code 10H

起始地址 高字节 00H 起始地址 高字节 00H

14

Start address High byte Start address High byte低字节

Low byte 03H 低字节

Low byte 03H

寄存器数量

Number of

registers高字节

High byte 00H 寄存器数量

Number of

registers高字节

High byte 00H

低字节

Low byte 01H 低字节

Low byte 01H

字节数

Number of bytes 02H CRC 校验码

CRC check

code低字节

Low byte C9H

0003H 待写入

数据

Data to be preset in 0003H

高字节

High byte 04H 高字节

High byte F1H

低字节

Low byte 00H

CRC 校验码

CRC check

code低字节

Low byte A3H

高字节

High byte A4H

7.2.3 功能码 06H：写单个寄存器 Function code 06H: preset the single register

功能码 06H 允许用户改变单个寄存器的内容，该仪表中系统参数、开关量

输出状态等可用此功能号写入。

下面的例子是预置地址为01的仪表输出开关量DO2。开关量输入/输出状态

指示寄存器地址为0003H，第0-1位对应DI1-DI2，第8-11位分别对应DO1-DO4。

主机发送

Information sent by the master unit

发送信息

Code从机返回

Information sent by the slave unit

返回信息

Code地址码 Address code 01H 地址码 Address code 01H

功能码 Function code 06H 功能码 Function code 06H

起始地址

Start address高字节

High byte 00H

起始地址

Start address高字节

High byte 00H

低字节

Low byte 03H

低字节

Low byte 03H

0003H 待写入数据

Data to be preset

0003H

高字节

High byte 04H

写入数据 Data

to be set

高字节

High byte 04H

低字节

Low byte 00H

低字节

Low byte 00H

CRC 校验码

CRC check code低字节

Low byte 0AH CRC 校验码

CRC check

code低字节

Low byte 0AH

高字节

High byte 7BH

高字节

High byte 7BH

7.3 地址参量 Address parameters

表 7

Table 7

序号

NO.地址

Address参数 Parameter读写属性

Read-write property

数值范围

Numerical range备注 Remark

1 0000

A 相电流 A-phase

current

R 0-65535

15

2 0001

B 相电流 B-phase

current

R 0-65535

3 0002

C 相电流 C-phase

current

R 0-65535

4 0003

平均电流 Mean

current

R 0-65535

5 0004

漏电流/接地电流

百分比

Leakage

current/grounding

current percentage R

漏电流：

30-100mA

Leakage current: 30-100mA

接地电流百分比：1-100%

Grounding current percentage: 1-100%

6 0005

电流不平衡度

Current unbalanced degree R 0-100%

7 0006

累计热容量百分

比

Accumulated heat capacity

percentage R 0-100%

8 0007

系统频率 System

frequency

R 50、60

9 0008

电机状态

Motor state R

高字节：电机过载

剩余冷却时间

High byte: residual cooling

time of motor over-load

Bit0 停车 Bit1 起动 Bit2 运行 Bit3 报

警 Bit4 脱扣

Bit0 stop Bit1 start Bit2 operation Bit3 alarm Bit4 trip

10 0009

脱扣故障指示

Tripping fault

indication

Bit0 起动超时 Bit1 定时限过载 Bit2

反时限过载 Bit3 堵转 Bit4 阻塞 Bit5

短路 Bit6 接地 Bit7 欠载 Bit8 断相

Bit9 不平衡 Bit10 漏电 Bit11 外部故

障 Bit12 过压 Bit13 欠压

Bit0 start timeout Bit1 constant time

lag over-load Bit2 inverse time lag

over-load Bit3 locked rotor Bit4

blocking Bit5 short circuit Bit6

grounding Bit7 under-load Bit8 open

phase Bit9 unbalanced Bit 10 electric

leakage Bit11 external fault Bit12

over-voltage Bit13 under-voltage 11 000A

DIDO 状态 DIDO

state R

Bit0、Bit1 对应

DI1、DI2

Bit0、Bit1

correspond to DI1、DI2

Bit8~Bit11 对应 DO1~DO4

Bit8~Bit11 correspond to DO1~DO4

12 000B 电压 Voltage R 0-65535

13 000C 本次电机运行时 R 0-65535 小时

16

间

Motor run time

this time 0-65535 hour

14 000D

本次电机停车时

间

Motor stopping

time this time R

0-65535 小时

0-65535 hour 15 000E

电流比例因子

Current scale

factor R 10、100、1000

16 000F

软件版本号

Software version

number R 1.00-100.00

17 0010 预留 Reserved

18 0011 预留 Reserved

19 0012 预留 Reserved

20 0013 预留 Reserved

21 0014 预留 Reserved

22 0015

电流规格

Current specification R 1-3

电流规格： 1-5、2-25、3-100

Current specification: 1-5, 2-25 and

3-100

23 0016

脱扣等级

Tripping level

R/W

1、2、3、5、10、

15、20、25、30、

35、40

24 0017

定时限过载脱扣

阈值 Constant

time lag over-load

tripping threshold

R/W 100%-700%

25 0018

过载报警阈值

Over-load alarm

threshold

R/W 1-99%

定时限过载可以到 700%

The constant time-lag overload can

reach 700%

26 0019

定时限过载脱扣

延时

Constant time lag

over-load tripping

delayed

R/W 0.1-600.0

27 001A

欠载脱扣阈值

Under-load

tripping threshold

R/W 10-99%

28 001B

欠载报警阈值

Under-load alarm

threshold

R/W 10-99%

29 001C

欠载脱扣延时

Under-load

tripping delayed

R/W 0.1-600.0

30 001D 漏电故障电流

Leakage fault

R/W 30-1000mA

17

current

31 001E

漏电报警电流

Leakage alarm

current

R/W 30-1000mA

32 001F

接地脱扣百分比

Grounding

tripping

percentage R/W 20-100%

33 0020

接地报警百分比

Grounding alarm

percentage R/W 20-100%

34 0021

接地/漏电脱扣延

时

Grounding/leakage

tripping delayed

R/W 0.1-600.0

35 0022

不平衡脱扣阈值

Unbalanced

tripping threshold

R/W 10-99%

36 0023

不平衡报警阈值

Unbalanced alarm

threshold

R/W 10-99%

37 0024

不平衡脱扣延时

Unbalanced

tripping delayed

R/W 0.1-600.0

38 0025

短路脱扣阈值

Short-circuit

tripping threshold

R/W

400%~700%最大

可测过载倍数

400%~700% of maximum

measureable overload multiples 39 0026

短路报警阈值

Short-circuit alarm

threshold

R/W

400%~700%最大

可测过载倍数

400%~700% of maximum

measureable overload multiples 40 0027

短路脱扣延时

Short-circuit

tripping delayed

R/W 0.1-600.0

41 0028

阻塞脱扣阈值

Blocking tripping

threshold

R/W 100%-700%

42 0029

阻塞报警阈值

Blocking alarm

threshold

R/W 100%-700%

43 002A

阻塞脱扣延时

Blocking tripping

delayed

R/W 0.1-600.0

44 002B

堵转脱扣阈值

Locked-rotor

tripping threshold

R/W 100%-700%

45 002C

堵转报警阈值

Locked-rotor alarm threshold

R/W 100%-700%

46 002D

堵转脱扣延时

Locked-rotor

tripping delayed

R/W 0.1-600.0

47 002E 断相脱扣延时 R/W 0.1-600.0

18

Open-phase

tripping delayed

48 002F

外部故障脱扣延

时 External fault

tripping delayed

R/W 0.1-600.0

49 0030

剩余电流互感器

投入 Residual current

transformer

inputted

R/W

0-未投入 1-投入

0-not inputted

1-inputted

50 0031

脱扣允许位

Tripping allowed

bit

R/W

Bit0 反时限过载、Bit1 接地、Bit2

漏电、Bit3 欠载、Bit4 断相、Bit5

堵转、Bit6 阻塞、Bit7 不平衡、Bit8

外部故障、Bit9 起动超时、Bit10 短

路、Bit11 定时限过载、Bit12 过压、

Bit13 欠压

Bit0 inverse time lag overload, Bit1

grounding, Bit2 electric leakage, Bit3

underload, Bit4 open phase, Bit5

locked-rotor, Bit6 blocking, Bit7

unbalanced, Bit8 external fault, Bit9

start timeout, Bit10 short circuit, Bit11 constant time lag overload, Bit12 over-voltage, Bit13

under-voltage

51 0032

报警允许位

Alarm allowed bit

R/W

Bit0 反时限过载、Bit1 接地、Bit2

漏电、Bit3 欠载、Bit4 断相、Bit5

堵转、Bit6 阻塞、Bit7 不平衡、Bit8

外部故障、Bit9 起动超时、Bit10 短

路、Bit11 定时限过载、Bit12 过压、

Bit13 欠压

Bit0 inverse time lag overload, Bit1

grounding, Bit2 electric leakage, Bit3

underload, Bit4 open phase, Bit5

locked-rotor, Bit6 blocking, Bit7

unbalanced, Bit8 external fault, Bit9

start timeout, Bit10 short circuit, Bit11 constant time lag overload, Bit12 over-voltage, Bit13

under-voltage 52 0033

写 DO 状态（06）

Write DO state

(06)

R/W

普通 DO 时可写

Writable for ordinary DO

Bit0、1-DO1 吸合(3)、断开(0)、Bit2、

3-DO2，Bit4、5-DO3，Bit6、7-DO4

1-DO1 picked up (3), interrupted (0)

53 0034 预留 Reserved R/W

54 0035 预留 Reserved R/W

19

55 0036 预留 Reserved R/W

56 0037 预留 Reserved R/W

57 0038

继电器初始状态

Relay original state R/W

0 开 1 合，

Bit0-3：DO1-4

Bit6-7：DI1-2

0 open 1 close，

Bit0-3：DO1-4

Bit6-7：DI1-2

58 0039

可编程 1 继电器

设定

Programmable 1

relay output setting

R/W

0 远程起动 1 报警 2 脱扣 3 过载 4

短路 5 接地/漏电脱扣 6 断相 7 外部

故障 8 漏电报警 9 短路、接地保护

10 短路、接地/漏电 11 短路、接地/

漏电（脉冲 1s）

0 remote start 1 alarm 2 trip 3

overload 4 short circuit 5

grounding/leakage tripping 6 open

phase 7 external fault 8 leakage alarm

9 short circuit and ground protection

10 short circuit, grounding/electric

leakage 11 short circuit, grounding/electric leakage (impulse 1s)

59 003A

可编程 2 继电器

设定

Programmable 2

relay output setting

R/W

同上

Ditto

60 003B

可编程 3 继电器

设定

Programmable 3

relay output setting

R/W

同上

Ditto

61 003C

额定电流 Rated

current

R/W 1.0-6000.0

62 003D

MODBUS 波特率

MODBUS baud

rate R/W

0-2400，1-4800，

2-9600，3-19200，

4-38400

63 003E

MODBUS 地址

MODBUS address R/W 1-247

64 003F

CT 变比

CT transformation

ratio R/W 1-6300 1A：1-6300，5A：1-1990

65 0040

电机类型 Motor

type R/W

0 单相，

1 三相四线

20

0: single-phase;

1: 3-phase 4-wire 66 0041

起动时间 Starting

time R/W 0.1-600.0

67 0042

年月

Year and month

R/W

06 命令写入

06 command write 68 0043

日时

Date and hour R/W

06 命令写入

06 command write 69 0044

分秒

Minute and second

R/W

06 命令写入

06 command write 70 0045

总运行时间

Total running time R/W 0-65535 小时

71 0046

总停车时间

Total stopping

time R/W 0-65535 小时

72 0047

总起动次数

Total number of starts R/W 0-65535

73 0048

总脱扣次数

Total number of

tripping

R/W 0-65535

74 0049

过载冷却时间

Over-load cooling

time R/W

0-手动复位

1~30min 自动复

位

0-manual reset

1~30min

automatic reset

75 004A

运行值显示顺序

Runtime value display order R/W

Bit0~Bit3：0~11

表 示 地 址 0 ；

Bit4~Bit7 代表地

址 1；Bit8~Bit11

代 表 地 址 2 ；

Bit12~Bit15 代表

地址 3；

Bit0~Bit3: 0~11

represents address 0; Bit4~Bit7

represents address 1; Bit8~Bit11

represents address 2; Bit12~Bit15

represents address 3;

每个地址可显示12个数据中任意一

个，地址 0~11 分别对应：A 相，B

相，C 相，平均电流漏电/接地，不

平衡度，累计热容量，频率，电机

状态，脱扣故障，DI/DO 状态，电

压

Each address may display any one of

12 data, address 0~11 respectively

responds to: A-phase, B-phase, C-phase, mean current

leakage/grounding, unbalanced level, accumulated heat capacity, frequency, motor state, tripping fault, DI/DO

state, voltage 76 004B 运行值显示顺序 R/W Bit0~Bit3 代表地

21

Runtime value display order址 4... Bit12~Bit15 代表

地址 7

Bit0~Bit3

represents address 4…Bit12~Bit15

represents address 7

77 004C

运行值显示顺序

Runtime value display order R/W

Bit0~Bit3 代表地

址 8... Bit12~Bit15 代表

地址 11

Bit0~Bit3

represents address 8…Bit12~Bit15

represents address 11

78 004D 预留 Reserved

79 004E 预留 Reserved

80 004F

变送类型

Transmitting type R/W 0-6

0-Ia，1-Ib，2-Ic，3-Iav，4-Imax，

5-U，6-F

81 0050

变送倍数

Transmitting ratio R/W 1-8

电流：1-8，电压：1-2，

频率：65Hz Curent:1-8, voltage: 1-2

Frequency: 65Hz 82 0051

热累计启动定值

Accumulated heat set value R/W 100%-200%

83 0052

定时限过载返回

系数

Constant time lag

over-load return

coefficient

R/W 5%-50%

84 0053

欠载返回系数

Under-load return

coefficient

R/W 5%-50%

85 0054

漏电返回系数

Electric leakage

return coefficient

R/W 5%-50%

86 0055

接地返回系数

Grounding return

coefficient

R/W 5%-50%

87 0056

不平衡返回系数

Unbalanced return

5%-50%

22

coefficient

88 0057

短路返回系数

Short-circuit return coefficient

R/W 5%-50%

89 0058

阻塞返回系数

Blocking return

coefficient

R/W 5%-50%

90 0059

堵转返回系数

Locked-rotor

return coefficient

R/W 5%-50%

91 005A

过压脱扣阈值

Over-voltage

tripping threshold

R/W 110%-150%

92 005B

过压报警阈值

Over-voltage

alarm threshold

R/W 110%-150%

93 005C

过压脱扣延时

Over-voltage

tripping delayed

R/W 0.1-600.0

94 005D

过压返回系数

Over-voltage

return coefficient

R/W 5%-50%

95 005E

欠压脱扣阈值

Under-voltage

tripping threshold

R/W 55%-90%

96 005F

欠压报警阈值

Under-voltage

alarm threshold

R/W 55%-90%

97 0060

欠压脱扣延时

Under-voltage

tripping delayed

R/W 0.1-600.0

98 0061

欠压返回系数

Under-voltage

return coefficient

R/W 5%-50%

8 典型应用方案 Typical application scheme

直接起动模式：图中电动机的起动、停车是通过现场按钮来控制的，接触

器 QAC 的吸引线圈串进脱扣继电器的常闭触点中。通电后，按下 SF (起动按钮）

时，QAC 吸引线圈得电，使 QAC 的主触头闭合，电动机开始工作；当按下 SS

（停车按钮）时，QAC 吸引线圈失电，使 QAC 主触点释放，电动机停止工作。

保护器直接起动电路

Direct starting mode: the motor is controlled by the field button. The sucking

coil of contractor QAC is connected with the normally-closed contact of tripping

relay in series. Power it on and press SF (start button). Then, QAC sucking coil is

23

powered on, QAC main contact is closed and the motor starts to work; press SS (stop

button), and then QAC sucking coil is powered off and QAC main contact is

released, motor stops working. The protector directly starts the circuit.

Residual current transformer ALP300 protector

Indicator Button switch Fuse Contactor Breaker

Protected by the protector manufacturer NO. Symbol Name Model and specification Quantity Remarks

Subject to the project design Subject to the project design Subject to the project design Subject to the project design Subject to the project design White ALP300 protector circuit diagram

注：

1. 本图应用于 ALP300 保护器的直接起动，其中 97、98 为需要分断断路器的短路、接地

等故障输出，需设定为脉冲输出方式，K1 外部故障输入为工艺连锁保护，必选配 K；

2. 保护器可编程输出：

（1）97、98（面板参数：P052）可设定为：0 远程起动 1 报警，2 脱扣，3 过载，4 短路，

5 接地、漏电脱扣、6 断相、7 外部故障、8 漏电报警、9 短路、接地保护、10 短路、接地/

漏电、11 短路、接地/漏电（脉冲 1S；）

（2）9、10（面板参数：P053）同可编程输出 1 设定；

（3）11、12（面板参数：P054）同可编程输出 1 设定；

3. 本主回路图应用于电流规格为 1/5A/25A/100A 的 ALP300 保护器；

4. 保护器型号仅供参考，可根据需要增选附加功能，不需要的功能可以不接线，保护器上

电后 95 、96 继电器闭合。

Notes:

1. The diagram applies to ALP300 protector’s direct starting. 97 and 98 are fault output, such as

short circuit and grounding connection for breaking out breaker and impulse output mode. K1, as

the external fault input, is the process interlocking protection, K is required option;

2. Programmed output of protector:

(1) 97 and 98 (panel parameters: P052) are set as: 0 remote start 1 alarm, 2 trip, 3 overload, 4

short circuit, 5 grounding connection and leakage tripping, 6 open phase, 7 external fait 8

leakage alarm, 9 short circuit and ground protection, 10 short circuit, grounding

24

connection/electric leakage, 11 short circuit, grounding connection/electric leakage 9impulse

1S;)

(2) 9 and 10 (panel parameters: P054) are same with programmed output 1 setting;

(3) 11 and 12 (panel parameters: P054) are same with programmed output 1 setting;

3. The main loop diagram applies to ALP300 protector with current specification of

1/5A/25A/100A;

4. The protector model is only for reference. The additional functions may be selected according

to the need. For the unwanted functions, they are not connected. After the protector is powered

on, 95 and 96 relays are closed. 9 保 护 功 能 设 置 及 说 明 Setting and description of protection

functions

9.1 保护功能参数设置：

Setting of protection function parameters:

表 8

Table 8

功能 Function 项目 Item 内容 Content

起动超时保护

Start time-out

protection

起动时间范围 Starting time range 0.1s～600.0s动作时间 Actuation time 瞬动 Transient dynamic保护动作方式 Actuation method 脱扣 trip

过载保护

Overload

protection

不动作特性 Non-action characteristic <120%Ie，2h 内不动作

<120%Ie, failure to actuate动作特性 Action characteristic >120%Ie，1h 内延时动作

>120%Ie, delay to actuate within 1h

脱扣级别 Tripping level 1，2，3，5，10，15，20，25，30，35，40

报警值域 Alarm range 1%～99%

过载保护方式

Over-load protection mode报警、脱扣

Alarm、trip

过压保护

Over-voltage protection

动作值整定范围

Setting range of operating value range

(110%～150%)Ue延时时间整定范围

Setting range of delay time

0.1s～600.0s，级差 0.1s 0.1s～600.0s, range 0.1s保护动作方式 Actuation method 脱扣 trip

欠压保护

Under-voltage protection

动作值整定范围

Setting range of operating value

(55%～90%)Ue延时时间整定范围

Setting range of delay time

0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 脱扣 trip

堵转保护

Locked-rotor

protection

动作值整定范围

Setting range of operating value

(100%～700%)Ie延时时间整定范围

Setting range of delay time

0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 脱扣 trip

阻塞保护

Blocking

protection

动作值整定范围

Setting range of operating value

(100%～700%)Ie延时时间整定范围

Setting range of delay time

0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 脱扣 trip

欠载保护

Under-load

protection

动作值整定范围

Setting range of operating value

（10%～99%）Ie延时时间整定范围 0.1s～600.0s，级差 0.1s

25

Setting range of delay time

保护动作方式 Actuation method 脱扣 trip

不平衡保护

Unbalance

protection

动作值整定范围

Setting range of operating value

10%～99%

动作时间 Actuation time 0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 报警、脱扣

trip

接地/漏电保护

Earthing/leak

age protection

整定值范围 Setting range 30～1000mA

延时时间 Delay time 0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 脱扣 trip

短路保护

Short-circuit

protection

短路整定值 Short circuit setting value （400% ~700%）Ie动作时间 Actuation time 0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 脱扣 trip

外部故障保护

External fault

protection

动作时间 Actuation time 0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 脱扣 trip

断相保护

Phase failure

protection

动作时间 Actuation time 0.1s～600.0s，级差 0.1s保护动作方式 Actuation method 脱扣 trip

9.2 保护功能说明 Description of protection functions

各保护类型起作用时间段：Reacting time frame of all protection types:

表 9

保护类型 Type of protection

起作用时段

Working periods

外部故障、过压、欠压

External fault, Over-voltage, Under-voltage停车 Stop

外部故障、过压、欠压、断相、堵转、漏电/接地、起动超时

External fault, Over-voltage,Under-voltage , phase failure, locked-rotor, leakage/ earthing and start time-out

起动 Start

外部故障、过压、欠压、断相、漏电/接地、过载、不平衡、阻塞、欠载、短路

External fault, Over-voltage,Under-voltage , phase failure, leakage/ earthing, overload, unbalance, blocking, under-load, short circuit

运行 Running

■ 起动超时保护 Starting overtime protection

当电动机起动时间达到用户设定的起动时间，电动机的三相平均电流还大

于设定的额定电流 1.1 倍时，保护器按照内部设定的要求保护，发出脱扣命令，

停止电机运行。

When the motor starting time reaches the user set starting time and the three-phase

mean current of motor is more than 1.1 times of the rated current, the protector will

send the tripping command according to the internal set requirements. Then, motor

stops running. ■ 过载保护 Overload protection

当电动机在过负载情况下，长时间超过其额定电流运行时，会导致电动机

过热，绝缘降低而烧毁，保护器根据电动机的发热特性，计算电动机的热容量，

模拟电动机发热特性对电动机进行保护。

When the motor is overloaded and runs with the current more than the rated current

for a long time, the motor will be overheated or may be burned up due to reduced

insulation. The protector will calculate the motor’s thermal capacity according to the

motor’s heating characteristics and protect the motor by simulating the

characteristics.过载保护电流-时间对照表 9，过载特征曲线图（K 曲线图）如下图所示。

26

Overload protection current-time comparison table 9 and the overload feature curve

diagram (K curve diagram) are shown below.过载保护电流—时间对照表:

Overload protection current-time comparison table:

表 10

Table 10

可选择的脱扣曲线等级 K

Selectable trip curve level, K

1 2 3 5 10 15 20 25 30 35 40

脱扣延时（S）误差 ±10%

Trip delay error, s, ±10%

三相平衡的负载，自冷态始 Balanced three-phase load, starting from the

cold state

额定值 Ie×1.2

Rated value Ie * 1.2

25 50 75 125 250 375 500 625 750 875

100

0 ×1.5 16 32 48 80 160 240 320 400 480 560 640 ×2 9 18 27 45 90 135 180 225 270 315 360 ×3 4 8 12 20 40 60 80 100 120 140 160 ×4 2.26 4.52 6.78 11.3 22.5 33.8 45 56.3 67.5 78.8 90 ×5 1.44 2.88 4.32 7.2 14.4 21.6 28.8 36 43.2 50.4 57.6 ×6 1 2 3 5 10 15 20 25 30 35 40 ×7.2 0.7 1.4 2.1 3.5 6.9 10.4 13.9 17.4 20.8 24.3 27.8

当保护器监测到电动机过载运行了，保护器应在报警或脱扣（延时）设定

时间内发出报警或脱扣信号。

When the protector monitors that the motor runs under overload, the protector shall

send the alarm or tripping signal within the alarm or tripping (delay) set time.

过载特征曲线图（K 曲线图）Overload characteristic curve (curve K)

■ 堵转保护（起动过流保护）Locked-rotor protection (starting overcurrent

protection)

电动机在起动过程中，如果由于负荷过大或自身机械原因，造成电动机轴

被卡住，而未及时解除故障，将造成电机过热，绝缘降低而烧毁电机，堵转保

护适用于电动机起动发生此类故障时进行保护。

27

When the motor starts, if the motor shaft is clamped due to over-large load or

mechanical cause and the fault is not eliminated in time, the motor will be

overheated and burned up due to reduced insulation. The locked-rotor protection is

used in case of such faults of motor starting. ■ 阻塞保护 Blocking protection

电动机在起动或运行过程中，如果由于负荷过大或自身机械原因，造成电

动机轴被卡住，而未及时解除故障，将造成电机过热，绝缘降低而烧毁电机，

堵转保护适用于电动机起动发生此类故障时进行保护，阻塞保护适用于电动机

运行过程中发生此类故障时进行保护；当电流达到动作设定电流时，保护器及

时在脱扣（延时）设定时间内脱扣，避免电机烧毁。

When the motor starts or runs, if the motor shaft is clamped due to over-large load or

mechanical cause and the fault is not eliminated in time, the motor will be

overheated and burned up due to reduced insulation. The locked-rotor protection is

used in case of such faults of motor starting. The blocking protection is used in case

of such faults during operation; when the current reaches the actuation set current, the protector will trip within the tripping (delay) set time to avoid motor burnout. ■ 欠载保护 Under-load protection

当电动机所带负载为泵式负载时，电动机空载或欠载运转会产生危害，保

护器提供欠载保护，当三相的平均电流与额定电流的百分比低于设定值时，保

护器应在脱扣（延时）设定时间内脱扣。

When the load of motor is pump load, there may be hazard due to motor

no-load or underload running and the protector provides the underload protection. When the percentage of the three-phase mean current and rated current is less than

the set value, the protector will trip within the tripping (delay) set time. ■ 不平衡保护 Unbalance protection

电动机运行时，三相电流不平衡率达到保护设定值时，保护器按照设定的

要求保护，发出报警或脱扣信号，使电动机的运行更加安全。三相不平衡率表

示三相电流与平均电流的最大差值/额定电流与平均电流的最大值的比值。

When the motor runs and the three-phase current unbalance rate reaches the

protection set value, the protector will provide the protection according to the set

requirements and send the alarm or tripping signal. Thus, the motor will run more

safely. The three-phase unbalance rate refers to the specific ratio of maximum

difference value between three-phase current and mean current/rated current and the

maximum mean current.动作时间误差：在动作时间定值±10%范围内。

Actuation time error: within ±10% of actuation time set value.保护动作特性：当不平衡率>设定值时动作。

Protection actuation characteristic: when unbalance rate> set value, it is

actuated. ■ 接地/漏电保护 Earthing/ leakage protection

保护器具备接地保护和漏电保护功能（用户只能选择其中的一种）。接地电

流采用三相电流矢量和叠加而成，漏电电流通过增加漏电互感器，检测到漏电

电流大于设定的故障电流值，则保护器在脱扣（延时）设定时间内脱扣，以保

证人身安全。

28

The protector has functions of ground protection and leakage protection (the

user can only select one). The ground current is overlaid by three-phase current

vector sum. If the leakage current is more than the fault current, which is detected by

increasing leakage transformer, the protector will trip within the tripping (delay) set

time to guarantee personal safety. ■ 短路保护 Short-circuit protection

当电动机运行电流超过设定的保护电流时保护器按设定的要求进行保护，

在脱扣（延时）设定时间内脱扣。

When the motor running current is more than the set protection current, the

protector will provide the protection according to the set requirements. It trips within

the tripping (delay) set time. ■ 外部故障保护 External fault protection

当有外部故障出现时，外部故障开关量闭合，则保护器检测到有外部故障

信号输入，在脱扣（延时）设定时间内脱扣。

In case of any external fault, the external fault switching is closed. Then, the

protector detects that there is external signal input. It trips within the trip (delay) set

time. ■ 断相保护 Phase failure protection

断相故障运行时对电动机的危害很大，当电动机发生断相时，保护器按照

设定的要求保护，发出脱扣指令，使电动机的运行更加安全。

There is large hazard for the motor due to open-phase operation in fault. If the

motor is open phase, the protector will provide the protection according to the set

requirements and will send the trip command. Thus, the motor runs more safely.注：4～20mA 模拟量输出中 20mA 对应 2 倍保护器额定电流（P055）。

Note: 20mA in 4 ～ 20mA analog output corresponds to twice of protector’s

rated current (P055). 10 注意事项 Cautions

1、一次回路，三相电流穿线方向需一致，否则将导致接地保护出错。

1.For the primary circuit, three-phase current threading direction shall keep consistent, or else, the ground protection will be in error. 2、当保护器配有接地/漏电保护功能时，从漏电互感器引入保护器的导线建议

采用屏蔽导线，否则可能导致测量数据不准确。

2.When the protector is equipped with ground/leakage protection function, the

protector wire from the leakage transformer shall be shielded conductor, or else, the

measured data may be incorrect. 3、应合理设定保护器的额定电流（P055），若此设定值低于电动机的正常额定

工作电流值，则可能会导致电动机无法正常起动；高于电动机的正常额定工作

电流值，则电动机出现故障时保护器可能无法进行正常保护。

3.The rated current (P055) of the protector shall be set rationally. If the set value is

less than the normal rated working current, the motor may not start normally; if the

set value is more than the normal rated working current, the protector cannot provide

the normal protection in case of motor fault. 4、保护器一旦发生脱扣动作，在故障排除后，重新起动电动机前，需对保护器

29

进行复位，否则将无法起动电动机。

4.If the protector trips, after the fault is eliminated and before the motor is started, please reset the protector, or else, the motor cannot be started. 5、电机冷却时间：30分钟。电机过载保护动作后（故障显示为hEAt）由于热累

积，冷却后方可复位。

5.Motor cooling time: 30min. After the motor overload protection actuated (fault

displayed as hEAt), after cooling, it can rest due to heat accumulation. 6、在现场实际使用中，由于保护器的参数设置不合理，可能会导致电动机一起

动就保护或无保护作用，此时，可将所有保护功能都关闭，根据保护器在电动

机正常运行时测量得到的各种参数对保护器的各种保护参数进行重新设定。

6.In the actual use on the site, as the protector parameter setting is not rational, the

motors may be protected together or are not protected. At this moment, all protection

functions will be off. All protection parameters of the protector are set again

according to all parameters measured during motor normal operation. 7、若保护器设定的各种保护参数是合适的，但电动机一起动保护器就动作，则

此时，可根据保护器显示的动作代码来查找故障原因。

7.If all protection parameters of the protector are appropriate, once the motors

actuate together, the protector will work. At this moment, the fault cause is searched

according to the actuation code of protector. 8、保护器在出厂时的各种设置参数采用默认设置（用户特别要求除外），用户

在实际使用中可根据实际需要将各种保护功能打开，并对各种参数进行设置。

8.The protector parameters are defaulted during delivery (except the user’s special

requirements). The user may enable all protection functions according to the actual

need and set all parameters. 9、如果现场一次侧电流为 1000A，外置互感器为 1000A/5A，再接入保护器时，

选用电流规格为 5A 的保护器，并设置 CT 变比为 200。

9.If the primary current is 1000A, the external transformer is 1000A/5A. When the

protector is connected again, the protector with 5A of current is selected and CT

transformation ratio is 200. 11 订货范例 Order sample

例： 型 号：ALP300-25/CLM

辅助电源：AC 220V

电机额定电流：6.3～25A

应用场合：三相电机

附加功能：RS485 Modbus 通讯、零序电流测量、DC4～20mA 模拟量输

出

Example: Model: ALP300-25/CLM

Auxiliary power supply: AC220V

Rated current of motor: 6.3-25A

Application: three-phase motor

Additional functions: RS485 Modbus, zero sequence current measurement, DC analog output 4-20mA

总部：安科瑞电气股份有限公司

地址：上海市嘉定区育绿路 253 号

电话：(86)021-69158300 69158301 69158302

传真：(86)021-69158303

服务热线：800-820-6632

网址：www.acrel.cn

邮箱：ACREL001@vip.163.com

邮编：201801

生产基地：江苏安科瑞电器制造有限公司

生产基地：江苏安科瑞电器制造有限公司

地址：江阴市南闸镇街道东盟路 5 号

电话(传真)：(86)0510-86179970

邮编：214405

邮箱：JY-ACREL001@vip.163.com

Headquarters: Acrel Co., Ltd. Address: 253,Yulv Road, Madong Industrial Park, Jiading, Shanghai

Tel.: +86-(0)21-69158300, 69158301, 69158302

Fax: +86-(0)21-69158303

Service hotline: +86-800-8206632

Website:www.acrel.cn

E-mail: ACREL001@vip.163.com

P.C.：201801

Production base: Jiangsu Acrel Electric Appliances Manufacturing Co., Ltd, Address: 5,Dongmeng Road, Dongmeng Industrial Park, Nanzha Town, Jiangyin City

Tel(Fax).: (86)0510-86179970

P.C.: 214405

E-mail: JY-ACREL001@vip.163.com