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I. Safety Information

        In order to operate the Tester properly, please read the manual carefully 

before use. This manual includes safety information related to use of the Tester. 

To ensure your own safety and safe use of the instrument, strictly follow these 

safety instructions during the operation.

   Caution:

1. Please read and understand the manual before using the Tester.

2. Keep the manual well for future reference.

3. Use the Tester in a procedure as specified in the manual.

4. Please make sure you have already read and understood the all safety 

    instructions.

5. Strictly follow the safety instructions mentioned below, or it may cause 

    personal injury or damage to the Tester.

6. The Tester must be operated by properly trained and qualified technical 

    staff and done under conditions specified in the manual.

7. UNI-T will not be liable for equipment damage or other loss caused by 

    improper use or violation against safe operation rules in the manual. 

Safety symbol of       h as 3  m eanings in  the m anual. P lease p ay a ttention
to operation when reading the manual.

Danger:

 Specifies conditions and actions that most likely pose 

severe or fatal harm to the user.

Warning:

 Specifies conditions and actions that may pose severe 

or fatal harm to the user;

Caution:

 Specifies conditions and actions that may cause minor 

injury or damage to the Tester

 

                                            Danger

                                                        Warning

                                                              Caution

Meanings of related symbol marks for the instrument:

Danger, Warning, Caution  

Double or Reinforced Insulated

Conforms to European Union standards

II.  Product Features

III.

 

Technical Specifications

3.1 Measurement Range and Accuracy:

(Temperature: (23±5) 

; Humidity: 45% ~ 75%RH); Altitude: ≤2000m)

Accuracy: ± (2% of r b digits)

Function

Operating 

Voltage(AC) 

Rated Trip 

Current(I

n) 

Trip Time 

    Accuracy 

Trip Current 

Trip Time 

*1/2

*1

*2
*5

230V (Error 

scope:   10%)

Frequency: 

50Hz

(1

0

/2

0

/3

0

/10

0/

3

00

/

500

)mA

(1

0

/2

0

/3

0

/1

00/

3

00

/

500

)mA

(10/20/30/100/300)m

A

(10/20/30/100)m

A

(10/20/30/100

/

300/500)m

A

(0~1000)mS

(0~300)mS

(RAMP increment: 

Step size is 10%) 

I  n varies from 20% 

to 110% 300*10mS 

(Testing period scope

is from 0 to 300mS.)

10

%~

0

%

0%~+10%

-10%~+10%

(0.6%+4)

Function  

Range  

Resolution   Accuracy   Input protection   

Note

Ac voltage

(60~400)V

1V

(5%+2)V

500

VAC/7

00V

DC Input impedance 

is about 9.9 M

UT583

AUTO 

RAMP test

Function

Operating 

Voltage(AC) 

Rated Trip 

Current(I

n) 

 Trip Time

Accuracy  

Trip Current

Trip Time 

*1/2

*1

*2
*5

230V (Error 

scope:   10%)

Frequency: 

50Hz

(1

0

/2

0

/30

/1

00/

3

00

/

500

)mA

(1

0

/2

0

/3

0

/1

0

0/3

00

/

500

)mA

(10/20/30/100/300)m

A

(10/20/30/100/200)m

A

(10/20/30/100

/

300/500)m

A

(0~1000)mS

(0~300)mS

Step at 10%; 

from 20%~110% 

of Rated Current, 

300ms *10ms 

(Test Time Range: 

0~300ms)

Error s

cop

e: -

10

%~

0

%

Error scope: 

0%~+10%

Error scope: 

-10%~+10%

(0.6%+4)

Function  

Range  

Resolution   Accuracy   Input protection   

Note

1V

(5%+2)V

500

VAC/7

00V

DC

Input 

impedance 

is about 

9.9M

UT585

AUTO 

RAMP test

   Caution:  

  1. Frequency response is 50Hz for UT583/585 AC voltage test.

  2. T

esting value is only for reference if AC/DC voltage is less than 60V

.

Ac voltage

(60~400)V

1V

Dc voltage (   6

0~ 

   4

00)

V

3.2 Test Functions

*1/2-------------------------------

Non-trip test, check RCD sensitivity

*1---------------------------------

Measure trip time

*2---------------------------------

Measure fast trip time at I

n×2 trip current

*5---------------------------------

Measure fast trip time at I

n×5 trip current

AUTO RAMP test------------

Measure trip current

3.3 Application Standards:

IEC 61010-2 CATIII 300V; Pollution level: 2

IEC 61557-1, 5

IEC 61326-1

IEC 61326-2-2

3.4 Operating Voltage

230VAC

10%)/50Hz

3.5 Operating Environment

T

emperature: 0 ~40

Relative humidity: 

80%RH

Altitude: 

2000m

3.6 Storage Conditions

 Temperature: 

-20

~60

● This Tester is only applicable for single-phase 230V(±10%)/50Hz 

   mains supply.

● Do not touch any exposed conductor during test.

● You can touch tested conductor only under a totally safe conditions 

   during test.

● Remove the test leads immediately from the power supply after test. 

●Do not keep test leads connected onto the power for a long time.

● Never open the Tester’s casing during test, for hazardous voltage may 

   be present inside. If any fault happens, please have the Tester serviced 

   by professional personnel.

● If the Tester works abnormally(e.g. incomplete display, unexpected value,

 

   damaged casing, noise during test indication), please send it to professional 

   staff for repair before using the Tester.

● Do not use the Tester if the operator’s hands are wet.

● For the sake of your safety, use only the certified test leads supplied by 

   our company, prohibit replacing by any other test leads during test. 

● Do not expose the Tester to any sunshine, extreme temperature/humid

   -ity environments.

● Clean the Tester with soft dampened cloth or mild detergent. Do not use 

   any abrasives or corrosives.

● Dry the Tester before storing it if it is wet.

   

 

 

(    ) 

● Adopts intelligent micro-controller chip to maintain high accuracy, high 

   reliability and stability.

● Wiring Check:

LCD Indication  

                                

     Connection Status

L-N&L-PE flash                                        abnormal power supply or no 

                                                                 supply to tested circuits

L-PE&N-PE flash, L-N doesn’t flash        the tested terminals are badly or

                                                                 not earthed.

L-N&N-PE flash, L-PE doesn’t flash        neutral terminal is open

L-N,L-PE and N-PE flash                         wrong wiring to tested terminals,

the Tester will prohibit the tests regarding the above status, except reverse 

connection between earth and neutral terminals,   

Phase Angle Selection: 

The tests can be performed at positive 0  or

  negative 180  phase angle.

Test Locked: 

The Tester will automatically carry out the tests once the

  test leads are connected to the tested terminals (UT585 Only)

Auto Ramp: 

Measure trip current and trip time simultaneously.

Overload Indication:

 Display “

300ms” or “

1000ms” when trip time 

  exceeds Max. test time.

● 

Data Hold: 

The readings will be frozen when the test finishes.

1A Large-Current Trip Test(UT585 Only)

●Overheat Check:

 When internal components inside the Tester is 

  overheated, LCD will display             , and the Tester will automatically

  prohibit the tests. After it is cooled down,            displays and the tests can

  restart.

Backlight:

 Press LIGHT          button to turn on/off the backlight. 

●Low Battery Indication: 

When battery voltage is

7V,            shows, 

  please replace the battery timely.

●Auto Power Off: 

The Tester will automatically power off after ten minutes'

  idling. To disable the function, press and hold 0   / 180  button while 

  turning on the instrument.

●Fused Protection

  

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