西门子 断相保护热过载继电器 3UA60 3UA613 UA62 说明书

西门子 断相保护热过载继电器 3UA60 3UA613 UA62 说明书


2024年5月6日发(作者:)

s

断相保护热过载继电器 3UA60,3UA61,3UA62

GB14048.4,DIN VDE0660 第102部分,IEC 60947-4-1

A001253

Q/SMS 001,XK06-201 0023

中 文 使用说明书

编号: 4NEB 606 0020-30 *5

!有限地防止触及带电部件!

防护等级按IEC 60529为IP00级!

触指安全性符合GB 4942.2和 DIN VDE0106 第100部分。

调试维修应由专业人员按本使用说明书进行。

安装

安装尺寸见图I(单位:mm)

a 3UA60:配用附件3UX1424单独安装。

b 3UA60:与3TB50,3TF50接触器组合安装。

c 3UA61:与3TF51接触器组合安装。

d 3UA62:单独安装以及与3TB50接触器组合安装。

e 与3TB50,3TF50接触器组合安装。

f 3UA62:与3TB52,3TF52接触器组合安装。

g 与3TB52,3TF52接触器组合安装。

1

注:

至接地部件的最小距离。

④脱扣指示件(绿色)

在手动复位状态,当继电器脱扣时本指示件将从面罩上伸出,

表示继电器已脱扣,在自动复位状态则无此显示。

脱扣特性曲线见图 VIII

这些特性曲线符合VDE0165,VDE0170/0171,适用于增安型

电机。所示为三相负载从冷态(环境温度+20°C)开始的脱扣

时间,若继电器以1×I

E

电流预热,脱扣时间将减少大约25%。

I

E

整定电流

t

A

:脱扣时间(单位:秒)(±20%)

① 整定范围

(I:最小整定电流I

E

, II:最大整定电流I

E

② 型号和订货号

③ PTB(德国联邦实验室)试验报告编号

技术参数

主回路

额定绝缘电压 1000V

额定工作电流 55~180A

允许的环境温度 -25°C~+55°C

短路保护 见名牌

适配的接触器见图 II

a 连接板宽度

b 直接装配

c 当整定电流范围为135~160A,150~180A的继电器与

3TB52/3TF52 接触器连接时应使用软导线3UX1221作为接

线端子间的隔离。

3UA60:与3TB50,3TF50接触器组合安装以及配用3UX1424

单独安装。

3UA61:与3TF51接触器组合安装及单独安装。

3UA62:与3TB50,3TB52,3TF52接触器组合安装及单独安

装。

辅助回路

额定绝缘电压

400V

不同电位

690V

同电位

允许安装位置见图 III

a 热过载继电器与接触器组合安装。

b 热过载继电器单独安装。

应避免剧烈的冲击或长时间的振动。

卡装在35mm标准安装轨(DIN EN50 022)上。或用2枚螺钉

以及平垫圈和弹簧垫圈紧固在平面上。

额定工作电流

AC-15/UeV 24 60 125 230 400

AC-15/Ie A 2 1.5 1.25 1.15 1.1

DC-13/UeV 24 60 110 220

DC-13/Ie A 2 0.5 0.3 0.2

500690

1 0.8

短路保护

NH、NEOZED或DIAZED熔断器 6AgG或10A 快速

微型断路器 3A(C特性)

接线

允许的导线截面积见图 IV

1) 带接线盒的3UA60,见图Va

2) 不带接线盒的3UA60,见图Vb

接线图见图 VI

在单相负载的情况下必须将主回路三相串联起来。

工作条件环境温度>55°C时,必须

1. 降低热过载继电器的负载电流。

2. 为避免电动机在额定电流下发生脱扣,可适当调高整定电

流值修正系数:

调试

参见图 VII

①按照负载的额定电流调整刻度盘

②复位按钮(蓝色)

在投入运行前和脱扣后,按一下本按钮使继电器处于待工作

状态。

出厂时本按钮被置于“H”即手动复位状态。

若需从“H”手动状态转换到“A”自动复位状态,按下本

按钮并逆时针方向从H转到A即可。

③试验按钮(红色)

当按下本按钮后,动断触头打开,动合触头闭合,即动断、

动合触头的试验功能(模拟过载脱扣)。

在手动复位状态,再按下蓝色按钮时继电器复位。

在自动复位状态,当放开本按钮时继电器即复位。

环境温度

55°C

60°C

65°C

70°C

负载电流折合成刻度盘值 整定电流校准值

1 1

0.94 1.08

0.88 1.09

0.82 1.1

例如: 电动机负载电流: 60 A

环境温度: 70°C

热过载继电器采用:55~80 A

第一步:确定允许负载电流值:

最大负载电流:80 A × 0.82 = 65.6 A

环境温度70°C时电动机负载电流为60 A 是允许的。

第二步:计算整定电流:

电动机整定电流:60 A

整定电流校准值:60 A ×1.1= 66 A所以设定热继电器为66A。

进一步的数据和附件请查阅产品样本。

苏州西门子电器有限公司

1

s

Overload Relay with Phase-Failure Sensitivity

A001253

3UA60,3UA61,3UA62

Q/SMS 001,XK06-201 0023

English

GB14048.4,DIN VDE0660,Part 102,IEC 60947-4-1

Instructions

Order No.: 4NEB 606 0020-30 *5

! Limited protection against contact with live parts.

Commissioning and maintenance by qualified personnel only.

Follow the operating instruction!

WARNING

Hazardous voltage can cause electrical

shock and burns.

Disconnect power before proceeding with

any work on this equipment.

Installation

Dimension drawings (dimensions in mm): Fig. I

a 3UA60: for individual mounting with assembly kit 3UX14 24

b 3UA60: for mounting on contactor 3TB50, 3TF50

c 3UA61: for mounting on contactor 3TF51

d 3UA62: for individual mounting and mounting on contactor 3TB50

e mounting on contactor 3TB50, 3TF50

f 3UA62: mounting on contactor 3TB52, 3TF52

g mounting on contactor 3TB50, 3TF52

1)

Minimum distance from earthed components

Tripping characteristics: Fig. VIII

The characteristics conform to VDE0165, VDE 0170/0171 for machines with type of

protection E Ex e.

Tripping times are shown for a three-phase load from the cold state (ambient temperature

+20℃). In the case of hot relays, preloaded with 1×I

E

, the tripping times decrease by

approx. 25%.

I

E

Current setting

t

A

Tripping time in seconds (±20% )

① Setting range

(I= lowest value of current setting I

E,

II= highest value of current setting I

E

)

② Type designation/Order No.

③ PTB (Federal testing Laboratories) Test Report No.

Technical data

Main circuit

Rated insulation voltage

Rated operational current

Permissible ambient air temperature

Degree of protection

Short-circuit protection

1000V

55 to 180 A

-25

to +55

IP 00 ( IEC 60529 )

see nameplate

Can be fitted to contactor: Fig. II

a Width of connection angle

b Direct fitting

c For linking 3TB52/3TF52 in setting ranges 135 to 160A and 150 to 180A use flexible

connectors 3UX12 21 for thermal isolation.

3UA60: Mounting on contactors 3TB50, 3TF50;

Individual mounting possible with assembly kit 3UX14 24

3UA61: Mounting on contactors 3TF51 and individual mounting possible

3UA62: Mounting on contactors 3TB50, 3TB52, 3TF52 and individual mounting possible

Auxiliary circuit

Rated operational currents

AC-15/Ue V 24 60 125 230 400 500 690

AC-15/Ie A 2 1.5 1.25 1.15 1.1 1 0.8

DC-13/Ue V 24 60 110 220

DC-13/Ie A 2 0.5 0.3 0.2

Permissible installed positions: Fig. III

a Overload relay with contactor

b Overload relay for individual mounting

Do not subject to sudden shocks or long-term vibrations.

Snap-on mounting on a standard sectional rail (35mm) to EN 50 022 or bolting on a plane

surface by two bolts to be secured by washers and spring washers.

Rated insulation voltage:

400V 690V

differing potential same potential

Short-circuit protection:

NH, NEOZED or DIAZED fuses 6A gG or 10A, fast

Miniature circuit-breaker 3A (C-characteristic)

Connection

Permissible cable cross-sections: Fig. IV

1) 3UA60 with box terminal Fig. Va

2) 3UA60 without box terminal Fig. Vb

Equipment circuit diagram: Fig. VI

In the case of several single-phase loads, the three main circuits must be connected in

series.

Commissioning

Instructions: Fig. VII

① Set the scale to the rated current of load.

② Reset button (blue)

Push this button before commissioning and after tripping to make relay ready for

operation.

In the as-delivered condition, the auxiliary contact is set to H=Manual resetting.

To change from H=Manual to A=Automatic, press and turn the button counter-

clockwise from H to A.

③ Test button (red)

When this button is actuated, the NC contact opens and the NO contact closes, i.e. a

test function for NC and NO contacts (simulation of overload tripping).

In the “Manual” position, the relay is reset when the blue button is pressed.

In the “Automatic” position, the relay is reset automatically when the red button is

released.

④ TRIPPED indication (green)

In the H setting, a green pin protrudes from the front plate to indicate the TRIPPED

condition. In the A setting, this condition is not indicated.

Operating conditions at ambient temperatures>55

At ambient temperatures > 55

, you must

1. Reduce the current loading for the overload relay

2. Upwardly correct the setting current to prevent tripping at motor rated current.

Correction factors:

Ambient Perm. Current loading referred Setting current

temperature to end-of-scale value correction

55

1 1

60

0.94 1.08

65

0.88 1.09

70

0.82 1.1

Calculation example:

Motor rated current:

Ambient temperature:

Overload relay fitted:

60 A

70

55 to 80 A

1st Step: Determine the permissible current loading:

Max. Current loading: 80 A × 0.82=65.6 A

Loading with motor rated current 60 A at 70

ambient temperature is permissible.

2nd Step: Calculate the setting current:

Motor rated current: 60 A

Setting current correction: 60 A×1.1=66 A

You must set the overload relay to 66 A.

For further information and accessories, see Catalog.

Siemens Electrical Apparatus Ltd., Suzhou

2


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