Area Of Use; Safety Instructions; Conformity With Standards; Technical Data - Pentair Raychem NGC-20-C-E Guide D'installation, D'utilisation Et De Maintenance

1.7 Area of use

1.8 Safety instructions

1.9 Conformity with standards

1.10 Technical data

Application type
Hazardous area Approval
INDUSTRIAL HEAT TRACING SOLUTIONS
Raychem NGC-20-C(L)-E controllers are used for temperature control and temperature
limiting of electrical heaters in industrial and potentially explosive atmospheres. The
Raychem NGC-20-CL-E consists of a temperature controller and an additional safety
temperature limiter. Raychem NGC-20-C(L)-E units are approved for use in hazardous area
Zone 1 and Zone 2 (Gas) and Zone 21 and Zone 22 (Dust). Where needed the temperature
sensor of the unit can be placed in Zone 0 (Zone 20) However, the control unit itself is not
approved for being installed in Zone 0 (Zone 20).
During operation, do not leave this Instruction Manual or other objects inside the enclosure.
Use the temperature controller and limiter only for its intended purpose and operate it
only in clean, undamaged condition. In the event of incorrect assembly, the requirements
of IP66 as specified by IEC 60529:2001 are no longer met. Do not make any modifications to
the temperature controller and limiter that are not expressly mentioned in this Instruction
Manual.
Whenever work is done on the temperature controller and limiter, be sure to
observe the national safety and accident prevention regulations and the safety
instructions given in this Instruction Manual.
Raychem NGC-20-C(L)-E units meet the requirements of the following Hazardous area- and
functional safety standards and are developed, manufactured and tested in accordance with
state-of-the-art engineering practice.
IEC 60079-0, EN60079-0
IEC 60079-7, EN60079-7
IEC 60079-18, EN60079-18
IEC 60079-11 EN60079-11
IEC 61241, EN 61241 Parts 1 to 3
IEC 61508-1:2000 and IEC 61508-2:2000
Table 1: Standards overview.
Raychem NGC-20-Cx-E units are approved for use in Hazardous area Zone 1 or Zone 2
(Gas) or Zone 21 or Zone 22 (Dust) and non hazardous areas
Baseefa08ATEX0184X
II 2 GD Gb Ex e mb ib IIC T* Db Ex tD A21 IP66 T95°C
IECEx BAS 08.0047X
Gb Ex e mb ib IIC T*
Db Ex tD A21 IP66 T95°C
T*: The switching capacity depends on the hazardous area temperature classification
(T-Class) and the maximum expected use temperature. Ratings as shown in table below
Temperature Class T5
Maximum Ambient Maximum Switching
Temperature
+ 50 °C
+ 54 °C
+ 56 °C
All values as per hazardous area certification.
Current ratings are given for a supply voltage of 254V +/-10%, 50/60 Hz and resistive loads only.
TC RU C-BE.ME92.B.00085
1 Ex e ib mb IIC T95 ° C Gb X
Ex td A21 IP66 T95 ° C
ML-RaychemNGC20CLE-IM-INSTALL130 Rev8
General requirements
Increased safety
Encapsulation
Intrinsic safety
Electrical apparatus for use in the
presence of combustible dust
For NGC-20-CL-E only: Functional Safety
of Electrical /Electronic / Programmable
Electronic Safety-related Systems
Temperature Class T4
Maximum Ambient
Current Temperature
25 A
20 A Up to 56 °C
16 A
N° : 10-IEx-0020X
Ex e ib mb IIC T* Gb
Ex tb IIC T* °C Db IP66
Ex e
Ex m
Ex i
Maximum Switching
Current
25 A
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