Thytronic NA30 User Manual

PREFACE
6
NA30 - Manual - 04 - 2022
Product identification
Each device is equipped with:
• Identification 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 NA30 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...), filters must be provided.
Graphical conventions
The CEI/IEC and ANSI symbols is employed where possible:
e.g.: 51 = ANSI code concerning the overcurrent element.
Following text formats are used:
The ThyVisor
[1]
menu:
Phase overcurrent -50/51
The parameter description (measures, thresholds, operate time,...) and related value:
I> element
    Denitetime
I>def
The display messages (MMI) are shown as:
NA30
Notes are highlighted with cursive letters inside colored bar
Note: Useful description note
Glossary/definitions
I
En
Relay residual nominal current
I
Enp
Residual CT primary nominal current
I
n
Relay phase nominal current
I
np
Phase CT primary nominal current
I
B
Basic current: it represents the nominal current of the line or trans-
former, referred to the nominal current of the CT’s for thermal image
protection
U
En
Relay residual nominal voltage
U
Enp
Residual primary nominal voltage (phase-to-phase) · √3
49 Thermal image ANSI code
50/51 Phase overcurrent ANSI code
50N/51N Residual overcurrent ANSI code
59N Residual overvoltage ANSI code
67N Directional ground fault ANSI code
BF Circuit breaker failure ANSI code
74CT CT supervision
74TCS Trip Circuit Supervision
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 o CB (Circuit Breaker) Circuit Breaker
Note 1 The graphic interface and the operation of the ThyVisor software are described in the relative chapters
NA30#0A2MMB0
I
n
5A
U
AUX
110-230 Vac/dc
100V
I
En
U
En
1A 1A
5A 1A
5A
1
2
3
4
5

Thytronic NA30 Specifications

General

Brand	Thytronic
Model	NA30
Category	Relays
Language	English