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PDF NJBK2 Data sheet ( Hoja de datos )
| Número de pieza | NJBK2 | |
| Descripción | Motor Protection Relay | |
| Fabricantes | CHiNT | |
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Relay
Protection Relay
NJBK2 Motor
Protection Relay
1. General
NJBK2 series motor protection relay (hereinafter referred to
protector as simply) is applicable for overload, locked-rotor,
phase-failure, three phase current unbalance, earthing and
PTC temperature protection of AC motor @ A.C.50Hz, less
than 660V rated operating voltage and 2A ~ 800A rated
operating current for its continuous working or
discontinuous working.
This product meets the requirements of IEC 60947- 4-1
2. Type designation
N JBK 2 - □/□□
Supply voltage
Specification of rated current
Rated current of the casing
Design sequence No.
Motor protection relay
Company code
3. Operation conditions
3.1 Altitude ≤2000m.
3.2 Ambient air temperature -5℃ ~ +40℃, with daily average
≤+35℃.
3.3 Atmospheric condition: when the highest temperature is
+40℃, relative humidity of air shall be no more than 50%,
higher relative humidity shall be allowable at lower temperature.
The max monthly average relative humidity of the most humid
month shall be not more than 90% and the lowest monthly
average temperature of the same month should be no more
than +25 ℃, condensed dew on surface of the product due to
the change of the temperature should be taken into account.
3.4 Pollution Level: Level 3.
3.5 Installation Category: Ⅲ.
3.6 Inclination between installation plane and vertical plane shall
≤±5°.
3.7 At places without prominence rock, impact and vibration.
3.8 At places without explosive risk, without gases that may be
corrosive to metal or gases that may cause damage to the
insulation, and with little conducting dust
3.9 At places where rain & snow proof facilities are equipped
with and not being full of steam.
4. Technical data
4.1 Main circuit: rated insulation voltage AC690V, rated frequency
50/60Hz.
Type
Rated Setting current Suitable motor
current (A) range (A)
power (kW)
NJBK2-200/10
NJBK2-200/50
NJBK2-200/200
NJBK2-400/400
NJBK2-800/800
10
50
200
400
800
2~10
10~50
40~200
160~400
320~800
1~5
5~25
20~100
80~200
160~400
4.2 Auxiliary circuit: rated insulation voltage AC380V, rated
frequency 50Hz/60Hz, Utility classes, rated operating voltage,
rated operating current and conventional heating current.
Utility classes
AC-15
Rated operating voltage (V)
240
380
Rated operating current (A)
1.5
0.95
Conventional heating current (A)
10
5. Design features
5.1 Equipped with functions of overload, locked-rotor, phase-
failure, three-phase unbalance, earthing and PTC temperature
protection etc.
5.2 Six indicators indicate status of power supply, operation,
phase-failure (three phase unbalance), overload, earthing and
temperature, respectively. Equipped with function of fault
memory.
5.3 four kinds of trip class
5.4 Digital dial-up settings with high precision.
5.5 Three kinds of reset modes: manual reset, remote manual
reset and automatic reset
I
> >> I-06
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet NJBK2.PDF ] | |
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