电伴热安装技术资料

At the end of the installation
• • • • Extra tracing for valves installed properly? Sensors OK? Insulation resistance test Sign off construction drawings
How to install a Self Regulating Heat Tracing System
Overview workshop
• Features of Raychem Heat Tracing
• Heat Tracing cable installation
• Component installation
Pre-installation checks of material
Perform insulation resistance test and record values
Pre-installation checks of piping
• Plan to fit in the construction schedule
Electrical insulation
Braid
Outer jacket
Fiber heaters (XTV & KTV)
Heating cable installation
• • • • • Storage Pre-installation checks Cable handling Positioning & attachment Tracing
Storage
Pre-installation checks of material
• Cable reference and Voltage rating
• Transportation damages
• Record cable details, batch nr, total length on reel
Thermal insulation
After thermal insulation
Power supply & electrical protection
rcd
Pre-commissioning
+
-
EHT Construction
Thanks for your attention
Components installation
• Detailed multilingual installation instruction in each kit
10 11
5 mm
5 mm
Heating cable preparation
Junction boxes & support brackets
• Unconditional T-classification
Heating cable range
BTV QTVR XTV KTV
Tmaintain (max) Tambient (max)
cable not powered
65° C 65° C
110° C 110° C
120° C 160° C
Keep free
Tracing elbows
Ø ≥ 2”
Tracing flanges
2 x Ø pipe
Tracing pipe bar hangers
Tracing welded pipe support shoes
Side
Under
Components installation
• Installation instructions • Heating cable preparation • Components installation
Power connection T-connection X-connection
230 V
230 V
230 V
Connection kit
Insulation entry kit
End seal kit
Splice kit
Accessories
• Fixing tapes
– GT66 for carbon steel pipes from -5°C to 130°C – GS54 for stainless steel pipes below -5°C up to 180°C
• Walk the system and plan the routing
Heating cable handling
To be avoided !
Heating cable positioning & attachment
Tracing a pipeline
300 mm
Tracing vthe installation
Raychem Heat Tracing cables
• Features & Benefits • Heating cable range • Heating cable construction
Features & Benefits
• Aluminium tape: ATE-180
Thermostats and control units
At the end of the installation
• Checking the trace-heating system • Thermal insulation • Power supply • Pre-commissioning
150° C 160° C
Texposure (max)
(intermittent, 1000h cumulative)
85° C
110° C
215° C
215° C
Heating cable construction
Monolithic heaters (BTV & QTVR)
Spacer Core Conductors Fiber
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Self-Regulating core responds to pipe temperature Insulating jacket Braid Outer jacket
Cold
Warm
Hot
Features & Benefits
• Self-regulation
• Parallel circuit