6
NV021 - Manual - 08 - 2012
INTRODUCTION
Product identification
Each device is equipped with:
Identifi cation label installed on the front side with following informations: code number, phase and
residual nominal currents, auxiliary voltage range and CE mark:
Test label with following informations: data, serial number and test operator signature.
Environment
The NV10 device must be employed according to the environment conditions shown (see technical
data).
In case of different environment conditions, appropriate provisions must be provided (conditioning
system, humidity control, etc...).
If contaminants are present (dust, corrosive substances, etc...), fi lters must be provided.
Graphical conventions
The CEI/IEC and ANSI symbols is employed where possible:
e.g.: 27= ANSI code concerning the undervoltage element.
Following text formats are used:
The ThySetter
[1]
menu:
Undervoltage - 27
The parameter description (measures, thresholds, operate time,...) and related value:
U> element
Defi nite time
U>def
The display messages (MMI) are shown as:
NV10
Notes are highlighted with cursive letters inside colored bar
Note: Useful description note
Glossary/definitions
27 Undervoltage
ANSI
code
27V1
Positive sequence undervoltage ANSI code
59 Overvoltage
ANSI
code
59V2
Negative sequence overvoltage ANSI code
59Uavg
Ten minutes Overvoltage
81O Overfrequency
ANSI
code
81U Underfrequency
ANSI
code
81R
Frequency rate of change ANSI code
74TCS
Trip Circuit Supervision
BF Breaker
Failure
DFR
Digital Fault Recorder (Oscillography)
SER Sequential
Event
Recorder
SFR Sequential
Fault
Recorder
ANSI
American National Standard Institute
IEEE
Institute of Electrical and Electronics Engineers
IEC International
Electrotechnical
Commission
CENELEC
Comité Européen de Normalisation Electrotechnique
52 or CB (Circuit Breaker)
Circuit Breaker
52a
Auxiliary contact in the breaker that is in the same position as the
breaker. It can be assigned to a binary input to locate the CB posi-
tion (Breaker failure and/or CB diagnostic functions). (52a open = CB
open)
52b
Auxiliary contact in the breaker that is in the opposite position as the
breaker (52b open = CB closed)
K1...K6...K10 Output
relays
Note 1 The graphic interface and the operation of the ThySetter software are described in the relative chapters
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NV021#UA2TE00
U
AUX
110-230 Vac/dc
400V
U
n
1
2
3
4
5
NV021#UA2TE00
U
AUX
110-230 Vac/dc
400V
U
n
1
2
3
4
5