nVent RAYCHEM Zone 2 Control & Monitoring Panels

PRODUCT OVERVIEW

The nVent RAYCHEM Zone 2 Control and Monitoring panels are configurable Electric Heat-Tracing (EHT) panels that are ATEX and IECEx approved. The enclosure and all components are Zone 2 approved, including the nVent HOFFMAN Zonex enclosure, the nVent RAYCHEM NGC-30, NGC-40 and Elexant 4020i controllers as well as the Solid-State Relays used for switching the heat-tracing circuits. Ratings of up to 63 Amps at 690 Vac per circuit leads to the most flexible and optimized designs. The panels meet the IEC/EN 61439 and 60079 series standards and are designed, manufactured, tested & approved by a hazardous area approved nVent factory. The Zone 2 panels can be used in Arctic regions down to -55°C by using the patented heating solution included in the panel.

[Image: A diagram showing the nVent RAYCHEM Zone 2 Control and Monitoring panel, a robust enclosure with various electrical components and a control interface.]

PRODUCT SPECIFICATIONS

Panel dimensions

Zone 2 panel

Panel configuration string

The configuration for the Zone 2 panel is represented by a configuration string, and the parameters in the string define the content of the panel. Any comments can be added to the string or discussed with the sales representative. The following table shows each parameter and presents examples:

Examples:

• NGC40-E-ZONE2-18-SS-230-PDN-HTN-CNTRL-18-NGC40HTC-1-LN-SS3REX-T1500-AR-AL
  NGC-40 panel, Zone 2, 18 circuits:
  Stainless steel
  Phase-Neutral = 230 Vac
  No power distribution
  Non heated
  Circuit Configuration: 18 circuits NGC-40-HTC, 1 pole switching Line-Neutral, Solid state relay 32 Amp switching high inrush
  TOUCH 1500 user interface
  Alarm relays
  Alarm lights
• NGC40-E-ZONE2-15-SS-230-PDN-HTN-CNTRL-12-NGC40HTC-1-LN-SS3REX-3-NGC40HTC3-2-LL-SS3REX-AR-AL
  NGC-40 panel, Zone 2, 15 circuits:
  Stainless steel
  Phase-Neutral = 230 Vac
  No power distribution
  Non heated
  Circuit Configuration: 12 circuits NGC-40-HTC, 1 pole switching Line-Neutral, Solid state relay 32 Amp switching high inrush
  3 circuits NGC-40-HTC3, 2 pole switching Line-Line, Solid state relay 32 Amp switching high inrush
  Alarm relays
  Alarm lights
• NGC40-E-ZONE2-13-SS-230-PDN-HTY-CNTRL-10-NGC40HTC-1-LN-HSS3EX-3-NGC40HTC3-3-LLL-HSS3EX-W24-ANT-AL-AR
  NGC-40 panel, Zone 2, 13 circuits
  Stainless steel
  Phase-Neutral = 230 Vac
  No power distribution
  Heated
  Circuit Configuration:
  10 circuits NGC-40-HTC, 1 pole switching Line-Neutral, Solid State relay 32 Amp switching
  3 circuits NGC-40-HTC3, 3 poles switching, L1-L2-L3, Solid State relay 32 Amp, Wireless radio 2.4 GHz, Alarm lights, Alarm relays, TOUCH 1500
  Wireless radio 2.4 GHz
  Antenna
  Alarm Lights
  Alarm Relays

Controller / main electronics selection

nVent RAYCHEM NGC-40

The nVent RAYCHEM NGC-40 is a multipoint electronic control system with a unique single point controller architecture for heat-tracing used in process temperature maintenance and freeze protection applications. By taking advantage of innovative modular packaging techniques, the NGC-40 control system provides configuration and component flexibility so that it may be optimized for a customer's specific needs.

The NGC-40 uses a single controller module per heat-tracing circuit for maximum reliability. The NGC-40 control system in combination with the solid-state relays can be used for 1-phase and 3-phase heat-tracing circuits up to 63 Amp at 690 Vac. The NGC-40 control modules include ground-fault measurements and as well single-phase and three-phase line current measurements. The Safety Temperature limiter can be used in combination with hazardous area approved contactors for control limited designs in Zone 1 applications (with controller panel in Zone 2).

Temperature inputs: Each 10 module accepts up to four additional RTD inputs. Each RMM2 module installed in the field can accept up to 8 RTDs. 16 RMM2 Modules can be daisy chained together via RS-485 for a total of 128 (8x16) RTDs. Since multiple RMM2's can be networked over a single cable to the NGC-40, the cost of RTD field wiring will be significantly reduced.

Digital inputs: The NGC-40 control system can be extended with the Digital Input module RMM2-DI. This enables the capability monitoring of equipment in the field like circuit breakers, switches etc.

Communication: The NGC-40 support Industry 4.0 and the Internet of Things (IoT) by offering a flexible Modbus map creating a very easy way of integrating the TOUCH 1500 user interface with external control systems. The NGC-40 system supports multiple communications ports, allowing serial interfaces (RS-485 and RS-232) and Ethernet connections to be used with external devices. All communications with the NGC-40 panel are accomplished through the NGC-40-BRIDGE module which acts as the central router for the system, connecting the panel's control modules, 10 modules, TOUCH 1500 touch screen and Remote Monitoring Modules (RMM2), as well as upstream devices such as nVent RAYCHEM Supervisor and the TOUCH 1500 user interface.

[Diagram: A schematic showing the NGC-40 system with local configuration via TOUCH 1500 and remote configuration via Supervisor software, connected to a heat-tracing system.]

nVent RAYCHEM NGC-30

The nVent RAYCHEM NGC-30 is a multi-circuit electronic control system for heat-tracing used in process-temperature maintenance and freeze-protection applications. The NGC-30 Controller can accommodate temperature inputs from a variety of sources: hard-wired to the panel mounted CRM(S) modules or from Remote Monitoring Modules (RMM2).

The NGC-30 for Zone 2 applications is equipped with the card rack module for solid-state-relays (CRMS), rated up to 63 Amp at 690 Vac.

Up to four PT100 sensor inputs for each heat-tracing circuit allow for a variety of combinations of temperature control, monitoring, and alarming. The ability to monitor and configure the controller is available both locally and remotely with the User Interface Unit (NGC-UIT3-EX) and the Supervisor software.

[Diagram: A schematic showing the NGC-30 system connected to a heat-tracing system, with options for local and remote configuration.]

nVent RAYCHEM Elexant 4020i

The nVent RAYCHEM Elexant 4020i is a compact, full-featured, touch screen based, single-point heat-tracing controller. It provides control and monitoring of Electric Heat-Tracing (EHT) circuits for both freeze protection and process temperature maintenance. This controller can monitor and alarm on high and low temperature, high and low current, ground-fault levels, voltage, and supports a host of additional features to offer the utmost in control and monitoring of EHT. The Elexant 4020i controller provides three output types: a line powered relay for driving contactors, a DC output for driving solid-state relays (SSRs) and a 0-10 V analog output for driving variable output power modules. Multiple communication ports allow flexible connectivity for remote monitoring, configuration, and ease of integration with Supervisor software, TOUCH 1500-EX or a Process Control System.

Solid state relay modules

The Zone 2 approved solid state relay (SSRs) modules are available in various versions and may be used with any of the controller products outlined above. They are mounted on the side of the panel enabling good heat transfer to keep heat away from the inside of the panel. The heated SSR module always contains groups of three SSR modules mounted on one heat sink. The Type of SSR, including voltage, amperage, inrush current as well as the cable size and type of cable are specified at the panel configuration procedure.

The minimum ambient operating temperature of the heated SSRs is -55°C.

Elexant 9200i wireless radio

Each panel can be optionally equipped with the Elexant 9200i wireless radio modules. The radios enable wireless communications between the Zone 2 panels and the network User Interfaces such as the TOUCH 1500-EX, UIT3-EX, and/or Supervisor. The radios using 868 MHz and 2.4 GHz are available, and they support point-to-point, star, line, and Mesh network topologies. Security is ensured through use of the 128-bit Advanced Encryption Standard (EAES). Reliability is enhanced by network self-healing capabilities and auto-negotiation of alternate pathways in the event of lost communications. Antennas can be installed on the panel or when needed, antenna packages are available to allow remote installation for improved range. For more details see the specifications of the Elexant 9200i.

APPROVALS

Panel

• For use in ordinary and hazardous area Zone 2 (Gas)
• Temperature classification: Temperature classification depends on panel configuration
• Product certification: CE, IECEx

More details about product certification, approvals and conditions of safe use are available in the installation manual at www.nVent.com/RAYCHEM.

NGC-30 / NGC-40 / Elexant 4020i

• For use in ordinary and hazardous area Zone 2 (Gas)
• Temperature classification: NGC-40: T4, NGC-30: T5, Elexant 4020i: T4
• Product certification: CE, IECEx

More details about product certification, approvals and conditions of safe use are available in the installation manual at www.nVent.com/RAYCHEM.

ORDERING INFORMATION

Optional components

The Zone 2 panels provide flexible configurations - the following items are optionally available: