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PDF NJBK7 Data sheet ( Hoja de datos )
| Número de pieza | NJBK7 | |
| Descripción | Motor Protection Relay | |
| Fabricantes | CHiNT | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJBK7 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
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2. Type designation
N JBK 7 - 800 / □
Relay
Protection Relay
NJBK7 Motor protection delay
1. General
NJBK7 series motor protection relay (hereinafter
referred to as protector) is used to provide overload, locked
rotor, phase failure, three-phase current unbalance, ground
and PTC temperature protection for AC motors with a
frequency of AC 50Hz, a rated insulation voltage of up to
690V and a rated operational current of 80A-800A that
operate continuously or intermittently. The protector uses
flexible Rogowski coil to acquire current and features wide
setting current range, high accuracy and convenient
installation. The protector has RS485 interface and 4mA-
20mA analog transmission interface, permits network
communication and can realize remote monitor and
control and fault inquiry of motors by means of upper
computer. The protector is genenrally used in combination
with AC contactor.
Standards: GB 14084.4, IEC 60947-4-1.
Rated control supply voltage
(AC220, AC380, AC/DC100V-240V)
Specification code
Design sequence No.
Motor protection relay
Company code
3. Technical data
3.1 Altitude: should not exceed 2000m;
3.2 Ambient tempeature: -5℃~+40℃, and the average
temperature in 24h should not exceed +35℃;
3.3 Atmospheric conditions: The relative air humidity should not
exceed 50% at the maximum temperature of +40℃. The
relative humidity may be higher at lower temperatures, for
example, the air humidity can be up to 90% at +20℃. Special
measures should be taken if condensation occurs on the product
occasionally due to temperature variation;
3.4 Pollution degree: 3;
3.5 The inclination between the mounting plane and the vertical
plane should not exceed ±5°;
3.6 In non-explosive media that do not contain a sufficient
amount of gas or conductive dust to cause metal corrosion or
insulation failure;
3.7 In places with rain and snow protection equipment and not
full of vapor;
3.8 In places where there is no significant shake, impact or
vibration;
3.9 Mounting category: Ⅲ;
3.10 Degree of protection of enclosure: Ip20.
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| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet NJBK7.PDF ] | |
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