Siemens 7UG0861-1BU20 Bedienungsanleitung

Operating Instructions

Earth Fault Monitoring Relays

7UG0861-1BU20

7UG0

IEC 60947-5-1

IEC 60947-4-1

Please read and understand these instructions before installing,

operating, or maintaining the equipment.

DANGER

Hazardous voltage can cause death or serious injury.

Disconnect power before working on equipment.

CAUTION

Reliable functioning of the equipment is only ensured

with certied components.

Overvoltage category II

(Refer IEC 60947-1)

NOTICE

This product has been designed for environment A. Use of this product

in environment B may cause unwanted electromagnetic disturbances in

which case the user may require to take adequate mitigation measures.

Technical Data

Designation 7UG0861-1BU20

Type Earth Fault relay

Control voltage 85 - 270V AC/DC

Operating temperature 0 to 50°C

Trip modes Fault current: 10%-80% of rated current

CBCT current ranges:

- 160A

- 250A

- 630A

Trip Time delay 0 - 99.9 sec

Power consumption 4VA

7UG0861…

Terminal connections

Control

Voltage

MLFB Type

7UG09910 Core Balance CT 160 A, 3P

7UG09911 Core Balance CT 160 A, 4P

7UG09912 Core Balance CT 250 A, 3P

7UG09913 Core Balance CT 250 A, 4P

7UG09914 Core Balance CT 630 A, 3P

7UG09915 Core Balance CT 630 A, 4P

LED Indication Chart

Various condition ‘R1’ LED ‘R2’ LED

No Fault OFF OFF

Pre-Alarm OFF ON

Fault / Trip ON ON

Note:

7UG0991.CBCT (Core Balanced Current Transformer) is an

accessory to be used with 7UG0861... (Earth Fault relay)

For single phase applications, only the live and neutral needs

to be passed through the CBCT.

For 3 Phase 3 wire system, pass L1, L2, L3 through CBCT.

For 3 Phase 4 wire system pass L1, L2, L3 and N through

CBCT.

The Earth MUST NOT pass through the CBCT.

The distance between relay and CBCT should be kept as short

as possible

Use Screen, shielded cable or twisted pair cable between the

unit and CBCT for long distance (Greater than 1m).

7UG08... / 7UG09..

0.5 Nm / 0.4 Nm

Solid

1 x (0.75 to 2.5) mm2

2 x 0.5 to 2 x 1.5 mm2

Stranded with end sleeve

1 x (0.5 to 2.5) mm2

2 x (0.5 to 1.5) mm2

Menu Guide 7UG0861..

CONFIGURATION MENU

Press + for 3sec. to enter or exit conguration menu.

TO SCROLL THROUGH MAIN MENU PRESS + OR + KEYS

Relay1

Setting

Time Setting

for Relay1

Relay2

Setting

Hysteresis

Password

Factory set

MCCB

Rating

Power

ON delay

Frame

Rating

Fault

Current Setting

Relay1

Operation Mode

Latch

Recovery

time delay

Relay2

operation Mode

Trip time

delay

Relay

functions

Pre

Alarm

Hysteresis

Setting

Password

Enable / Disble

Set password

Factory set

Yes / No

MAIN MENU SUB MENU

Time Setting

for Relay2

Trip time

delay

Recovery

time delay

Latch

MCCB

Settings

Note: Appearance of shaded menus dependant on selection of other parameters

SUB MENU

MCCB Settings (MCb) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Frame Rating

160, 250, 630

MCCB Rating

For different Frame

rating the MCCB

ratings are

160: 16, 20, 25, 32,

40, 50, 63, 80,

100, 125, 160

250: 40, 50, 63, 80,

100, 125, 160,

200, 250

630: 250, 315, 400,

500, 630

For selected

frame rating,

the default

value will be

minimum

MCCB rating

of that

particular

frame.

Relay 1 Settings (RL1) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Set trip value

for fault

current

10% to 80% of

selected MCCB

rating

Steps of 0.1A from 0

to 99.9A and Steps

of 1A beyond 100A

Eg. For MCCB

rating of

160A Set

value will be

from 16.0A

to 128A

Relay

operation

mode

ON/OFF

ON : NC

(During Trip)

OFF : NO

(During Trip)

Latch

ON/OFF

If latch is ON,

user has to

reset the unit

manually

when the

fault is

removed

Time Setting for Relay 1 (TM1) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Trip time delay

0.0 – 99.9 sec

Recovery time

delay

off

0.0 – 99.9 sec

Power ON

delay

0.5 – 99.9 sec

Applicable for

Relay1 and

Relay2

Relay 2 Settings (RL2) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Relay 2

Functions

RL1 / PRE

If RL1 is

selected, all

the settings

done for RL1

& TM1 will be

automatically

set for RL2

and no other

parameter

of RL2 &

TM2 will be

prompted.

Pre Alarm

50% – 100%

Will prompt

only if PRE is

selected for

Relay 2

Relay

operation

mode

ON / OFF

ON : NC

(During Trip)

OFF : NO

(During Trip)

Latch

ON / OFF

If Latch is

ON, user has

to reset the

unit manually

when fault is

removed

Time Setting for Relay 2 (TM2) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Trip time delay

0.0 – 99.9 sec.

Recovery time

delay

off

0.0 – 99.9 sec.

Hysteresis (HYS) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Hysteresis

1% to 10% of Trip

current setting (SV)

Fault

condition

is removed

when fault is

H% less than

the Set Value

Password (PW) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Password ENB / DIS

Enable /

Disable

password

protection

option

Set password 0-999

Will be

prompted

only when

Password

option is

enabled

Main Menu

Password

NOTE: PW option will be asked when

the user enter the cong. menu if

PW option is enabled in the cong

menu and the user has to enter the

password which he has set in the

S.PW (set password) option.

Factory set (RST) Press to enter sub menu from main menu

Press to to scroll

through sub menu Press + or + to change parameter value

DISPLAY

(For 1sec) DESCRIPTION DEFAULT

VALUE RANGE CONDITION

Reset

(Factory set) YES / NO

TEST & RESET FUNCTION LED ON LED OFF

KEY DESCRIPTION DISPLAY

(For 1sec) LED’s CONDITION

For TEST Press TST key

for > 2 sec.

R1 R2

Test is in Process.

Test passed

R1 R2

If test key is passed, OK

will be displayed till reset

button is pressed.

Test Failed

R1 R2

–

RST Press RST key

for > 2 sec.

Actual

Value

R1 R2

–

TRIP INDICATION Trip Indication on press of key: Trip value will be

displayed till the key is pressed.

RESET Press key for 3sec. to reset manually

Master Password: 753

Siemens Ltd.

DF-SGR-680-2016

Product development is a continuous process. Consequently

the data indicated in this Leaet is subject to change without

prior notice. For latest issue contact our sales ofces.

SACHIN ENTERPRISE

Disposal

Siemens product are environment friendly, which predominantly

consist of recyclable materials.

For disposals we recommend disassembling and separation into

following materials:

METALS: Segregate into Ferrous & Non Ferrous types for recycling

through authorised dealer.

PLASTICS: Segregate as per material type for recycling through

authorised dealer. Because of the long lifetime of Siemens

products the disposal guidelines may be replaced by other national

regulations when taking the product out of service.

The local customer care service is available at any time to answer

disposal-related questions

Dimensional drawings

7UG0861… 7UG0991..

35mm

Sr. No. MLFB A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm) H (mm)

1 7UG09910 100 25 156 84 100 28 184 170

2 7UG09911 140 35 201 98 114 28 230 215

3 7UG09912

4 7UG09913 180 35 236 93 109 28 264 250

5 7UG09914

6 7UG09915 220 50 276 112 128 28 305 290

Customer Care Toll free no. 1800 209 0987 Email: [email protected] Order No. A5E37638690A

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