Operating Instructions for ZHRV2

O p e r a t i n g I n s t r u c t i o n s f o r Z H R V 2 - S L C D V o l t a g e R e l a y

o Function Features

l Built-in high-performance micro controller with high reliability and strong resistance to interference. l Voltage value and fault message displayed through LCD .

l Protection against over-voltage, under-voltage, phase failure, unbalance and phase sequence is available. l Protection parameters are set through keys, and the protection function can be turned on and off freely. l True RMS value measurement, voltage measurement accuracy

≤1%. l Measurement frequency 45Hz~65Hz .

l

Three-phase voltage value query through keys .

l Testing and manual reset can be conducted through keys. l Three-phase four-wire system features N-phase failure protection.

o Model and Connotation

Unbalance delay time

Phase sequence protection

Start-reset delay time

Automatic

0.1~20s

ON-OFF

0.3~30s

ON-OFF inactivating protection function.

o Operating Instructions

0.1s

0.1s

2s

ON

0.3s

ON

Operation settings are made according to operating instructions for

ZHRV2-S/M415relay. The setting process of ZHRV2-S/M240 relay is the same with that of ZHRV2-S/M, but the displayed set values are different.

Parameter setting

Press and hold down key MD for 3 seconds to get into parameter setting interface:

Rated supply voltage code: M 240, M415

M 240:220-230-240 VAC ( three-phase four-wire system )

M 415:380-400-415 VAC ( three-phase threewire system )

LCD Display

ZHRV2 Series Voltage Relay

o Main Technical Parameters

Over-voltage

Rated supply voltage M415:AC200V~500V

Rated supply frequency

Fixed lag value

M240:AC125V~300V

50/60Hz

M415:6V

M240:5V

Phase failure, phase ≤0.2s sequence

Voltage measurement error ≤1% (the entire setting range)

Over-voltage time setting

Under-voltage setting

Time delay error

Measurement accuracy

Rated insulation voltage

±10%+0.1s

1%, true RMS value measurement

415V

Under-voltage time setting

Type and maximum rating of short-circuit protector

RT36-00 5A

Protection grade

Pollution class

Electrical life

Mechanical life

Height above sea level

Operating temperature

IP20

3

10

5

10

6

≤2000m

-5℃~40℃

Phase sequence setting

Unbalance ratio setting

Permissible relative humidity ≤50% (40℃) (without condensation)

Storage temperature -25℃~55℃, up to 70℃ within a short period of time (24h)

Contact parameters Ith:5A;AC-15:AC240V/1.5A

AC415V/0.95A

Unbalance operation time setting

Technical parameters

Over-voltage

Setting range Step Factory default

0FF-381V~500V 1V operation value 0FF-221V~300V 1V

437V

253V

Over-voltage delay time

0.1~20s 0.1s 2s

Under-voltage operation value

260V~379V-

OFF

150V~219V-

OFF

0.1~20s Under-voltage delay time

Unbalance ratio

OFF-5%~20%

1V

1V

0.1s

1%

323V

187V

2s

8%

Remarks

M415

M240

M415

M240

Start and reset time setting

Automatic reset mode setting l Press to change the set values, and long press this key to accelerate the "minus" or "plus". l When setting the parameters, the relay would automatically exit the menu if the key is not pressed for 60 consecutive seconds.

O p e r a t i n g I n s t r u c t i o n s f o r Z H R V 2 - S L C D V o l t a g e R e l a y l After over-voltage protection, under-voltage protection or unbalance protection is turned off, the menu would not display operation time setting process.

l Over-voltage and under-voltage function diagram

Over-voltage threshold value

Lag value

LCD block code

Block code interpretation

Lag value

Under-voltage threshold

L1-L2

NORMAL

L1-L2 phase, other phases switched through keys

Normal indication; this block code flashes in case of start and reset delay

Fault indication; output relay NO disconnected l Unbalance protection function diagram

FAULT

SET

U

U＞

Menu setting indication

Unbalance ratio

Lag ratio

U＜

Over-voltage fault indication or over-voltage parameter setting indication

Under-voltage fault indication or under-voltage parameter setting indication

PHS.SEQ

PHS.FAILS

Phase sequence fault indication or phase sequence parameter setting indication

Phase failure fault indication

ASY Unbalance fault indication or unbalance parameter setting indication

Test

Press key T/R for 0.5 second to test relay operation:

Tr: Start and reset delay time

To: Over-voltage delay time

Tu: Under-voltage delay time

Ta: Unbalance delay time

o Overall Dimensions

l This key would be valid only under normal conditions of power supply. l Other keys are invalid when testing the functions.

Three-phase voltage query

Press key MD to inquire three-phase voltage:

Example of over-voltage fault when U>the set voltage value of

450V

o Function Sequence Diagram (automatic reset mode)

l

Phase failure and sequence function diagram

Phase sequence protection

Phase failure protection

o Wiring Diagram

u Wiring diagram of a threephase three-wire system u Wiring diagram of a threephase four-wire system

Load Load