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CHINT NJG2 Operation Manual

Solid-state relays
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NJG2
Solid-state Relays
Operation Manual
Thank you for purchasing our products! Please read
the Operation Manual carefully before installing,
using or maintaining the products.
The manufacturer has obtained the following
management system certifications: ISO900,
ISO14001 and ISO45001.
Edition: 08-2021
Products certified according
to GB/T 14048.5

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Summary of Contents for CHINT NJG2

  • Page 1 Edition: 08-2021 NJG2 Solid-state Relays Operation Manual Thank you for purchasing our products! Please read the Operation Manual carefully before installing, using or maintaining the products. The manufacturer has obtained the following Products certified according management system certifications: ISO900, to GB/T 14048.5...

  • Page 2: Safety Instructions

    Safety Instructions 1. Do not install the product in an environment containing flammable and explosive gases as well as moisture and condensation. Do not operate the product with wet hands. 2. Do not touch the conductive parts of the product when the product is operating.
  • Page 3 Ma in Purposes and Scope of Application NJG2 solid-state relays (SSRs) are suitable for resistive, inductive and capacitive loads, and can be widely used in various automation control fields such as CNC machinery, plastic machinery, food machinery, packaging machinery, textile machinery, electric furnace heating/ thermostatic systems, petrochemical instruments and equipment, entertainment facilities.
  • Page 4 Normal Operating, Installation, Transportation and Storage Conditions 3.1 Normal Operating Conditions -Temperature range: -5 ℃ ~+40 ℃ -Humidity range: up to 85% @ +25 ℃ -Pollution level: 3 -Rated AC frequency: 50Hz/60Hz 3.2 Installation Conditions Under the conditions specified in the section "Safety Instructions", rain- and snow-proof, dry and ventilated.

  • Page 6: Main Features And Functions

    Factor Main Features and Functions NJG2 SSRs are switching devices that use semiconductor components to replace contact contacts. Photoelectric isolation is provided between the input and output ends. When a control signal is applied to the input end, the output end can change from the off state to the on state.
  • Page 7 Figure 2: Three-phase SSR For the wiring diagrams for different applications, please refer to Figure 3, 4 and 5. DC-to-AC (D/A) AC-to-AC (A/A) Load Power Control Power Load Power Control Power Load Load Figure 3: Wiring Diagram for AC SSR Load Power Load Power Control Power...

  • Page 8: Installation, Commissioning And Operation

    DC-to-DC (D/D) Load Power Control Power Load Load Load Power Control Power Figure 5: Wiring Diagram for DC SSR Installation, Commissioning and Operation Before installing and operating the product, please read the Operation Manual carefully to ensure correct use. If you have any questions, please contact our After-sales Service Department in time.

  • Page 9: Transportation And Storage

    Selection of varistor: The nominal operating voltage of the varistor should be ● selected according to 1.8-2 times the effective value of the SSR's operating voltage. Products with an operating current below 5A should be installed near a heat ● dissipation window with good ventilation, or where is exposed to the cooling wind.
  • Page 10 9.2 Environmental Protection In order to protect the environment, the product or its parts which are scrapped should be properly disposed of as industrial waste, or sent to a recycling station for classification, disassembly, recycling and reuse in accordance with relevant national regulations.

  • Page 11: Quality Certificate

    Quality Certificate Model: NJG2 Description: Solid-state Relay (SSR) The product has been tested according to the standard GB/T14048.5 and qualified for release. INSP 04 Inspector: Inspection Date: on the product or packaging...
  • Page 12 Website: http://www.chint net E-mail: chint@chint.com mailto:chint@chint.com are registered trademarks owned by CHINT ELECTRIC. All rights reserved by CHINT ELECTRIC. Printed on environmentally friendly paper. According to technical improvements of the product, the Operation Manual is subject to revision without notice.