Explosive Atmostpheres UG NI 9997

NI 9997: 2-Channel, 11 A, C Series Busbar Module

Physical Characteristics

Weight

137 g (4.8 oz)

Dimensions

Visit ni.com/dimensions and search by module number.

Number of channels

2 isolated, 6 terminal channels

Current per channel

11 A, maximum

Connector type

Screw terminal

Screw terminal wiring

Gauge

0.05 mm2 to 1.5 mm2 (30 AWG to 14 AWG) copper conductor wire

Wire strip length

6 mm (0.24 in.) of insulation stripped from the end

Insulation temperature rating

90 °C, minimum

Torque for screw terminals

0.22 N · m to 0.25 N · m (1.95 lb · in. to 2.21 lb · in.)

Wires per screw terminal

One wire per screw terminal; two wires per screw terminal using a two-wire ferrule

Ferrules

Single ferrule

0.25 mm2 to 1.50 mm2 (24 AWG to 16 AWG)

Two-wire ferrule

0.823 mm2 (18 AWG) maximum

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.25 N · m (2.2 lb · in.)

Environmental

Operating temperature

-40 °C to 70 °C

Storage temperature

-40 °C to 85 °C

Ingress protection

IP40

Operating humidity

10% RH to 90% RH, noncondensing

Storage humidity

5% RH to 95% RH, noncondensing

Pollution Degree

2

Maximum altitude

3,000 m

Indoor use only.

Hazardous Locations

Explosive atmospheres rating

Ex nA IIC T4 Gc

CCC certificate number

2021312310000312

Safety Guidelines

Operate the product only as described in this document.

Caution This icon denotes a caution, which advises you to consult documentation where this symbol is marked.
Caution Do not operate this product in a manner not specified in this document. Product misuse can result in a hazard. You can compromise the safety protection built into the product if the product is damaged in any way. If the product is damaged, return it to NI for repair.
Hazardous Voltage This icon denotes a warning advising you to take precautions to avoid electrical shock with the product.

Safety Guidelines for Hazardous Voltages

If hazardous voltages are connected to the device, take the following precautions. A hazardous voltage is a voltage greater than 42.4 Vpk voltage or 60 VDC to earth ground.

You may connect signals which may be floating at hazardous voltages only to the products with screw terminal connectors.

Caution Ensure that hazardous voltage wiring is performed only by qualified personnel adhering to local electrical standards.
Caution All wiring must be insulated for the highest voltage used.
Caution Do not mix hazardous voltage circuits and human-accessible circuits on the same module.
Caution Ensure that devices and circuits connected to the module are properly insulated from human contact.
Caution When module terminals are hazardous voltage LIVE (>42.4 V pk/60 V DC), you must ensure that devices and circuits connected to the module are properly insulated from human contact. You must use the 6-position connector backshell kit (783804-01) to ensure that the terminals are not accessible.

Safety Guidelines for Hazardous Locations

These products have been evaluated as Ex nA IIC T4 Gc equipment and are CCC certified. Each product is suitable for use within ambient temperatures of -40 °C ≤ Ta ≤ 70 °C in either nonhazardous locations or Zone 2 hazardous locations. If you are using the products in Gas Group IIC hazardous locations, you must use the device in an NI chassis that has been evaluated as Ex nA IIC T4 Gc equipment.

Follow these guidelines if you are installing the product in a potentially explosive environment. Not following these guidelines may result in serious injury or death.

Caution Do not disconnect I/O-side wires or connectors unless power has been switched off or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched off or the area is known to be nonhazardous.
Caution Substitution of components may impair suitability for Zone 2.
Caution The system shall only be used in an area of not more than Pollution Degree 2, as defined in IEC/EN 60664-1.
Caution The system shall be mounted in a CCC-certified enclosure with a minimum ingress protection rating of at least IP54 as defined in GB3836.1.
Caution The enclosure must have a door or cover accessible only by the use of a tool.

Safety Voltages

Connect only voltages that are within the following limits:

Maximum Voltage
Channel-to-earth ground

Continuous

300 V RMS, Measurement Category II

Isolation Voltages
Channel-to-channel

Continuous

300 V RMS, Measurement Category II

Withstand

3,000 V RMS, verified by a 5 s dielectric withstand test

Channel-to-earth ground

Continuous

300 V RMS, Measurement Category II

Withstand

3,000 V RMS, verified by a 5 s dielectric withstand test

Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.

Installing C Series Modules

Verify that power is not connected to the I/O connector(s) on the C Series module.

Removing C Series Modules

Verify that power is not connected to the I/O connector(s) on the C Series module before you remove a module from the chassis.

Safety Compliance and Hazardous Locations Standards

This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:

  • IEC 61010-1
  • IEC 60079-0: Ed 6, IEC 60079-15; Ed 4
  • GB3836.1, GB3836.8
Note For safety certifications, refer to the product label or the Product Certifications and Declarations section.

Product Certifications and Declarations

To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

Worldwide Support and Services

NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504, USA.