AKO 7121H212 Heating Cable User Guide

7121H212 Ed.04

Self-regulating heating cable up to 65 ºC with braided metal sheath and fluoropolymer or polyolefin overjacket

Application

AKO-7121x and AKO-7121xP self-regulating heating cables are suitable for freeze protection and process temperature maintenance, up to 65 ºC.
They may be applied on metal or plastic surfaces.
AKO-7121x with fluoropolymer overjacket withstands organic chemicals or corrosives and AKO-7121xP with modified polyolefin overjacket is appropiate when the heating cable is exposed to aqueous inorganic chemicals. The heat cables are approved for use in ordinary and hazardous areas.

Typical applications

• Freeze protection
• Chemical & petrochemical industries
• Pipe heat tracing
• Vessels and tanks

Construction

Technical specifications

Bus wires and protective braid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . Tinned copper
Maximum exposure temperature (power off) Intermitent: . . . . . . . . . . . . . 85 ºC (1000 h)
Continuous: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 ºC
Maximum exposure temperature (power on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 ºC
Rated voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 up to 254V
Minimum bending radius. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 mm
Minimum installation and start-up temperature.. . . . . . . . . . . . .  . . . . . . . . . . . . . . . -55 ºC
Nominal weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 g/m
Bus wires section . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 mm2

| AKO-71212| AKO-71214| AKO-71216| AKO-71218| AKO- 71212P| AKO-71214P| AKO-71216P| AKO-71218P
---|---|---|---|---|---|---|---|---
Type| PSB 10| PSB 15| PSB 26| PSB 33| PSB 10| PSB 15| PSB 26| PSB 33
Nominal output| 10 W/m at 10 ºC| 15 W/m at 10 ºC| 25 W/m at 10 ºC| 33 W/m at 10 ºC| 10 W/m at 10 ºC| 15 W/m at 10 ºC| 25 W/m at 10 ºC| 33 W/m at 10 ºC
T-rating| T6| T6| T5| T5| T6| T6| T5| T5
Design| Protective braid and a fluoropolymer outer jacket| Protective braid and modified polyolefin
Nominal dimensions| 11.6 x 5.6 mm| 11.8 x 5.8 mm

Cable certifications and approvals

| KEMA 08ATEX0111 X
II 2G Ex e IIC T5, T6 Gb
II 2D Ex tb IIIC, T 95 ºC, T 80 ºC Db| | IECEx KEM 09.0084X
Ex e IIC T5, T6 Gb
Ex tb IIIC, T 95 ºC, T 80 ºC Db| | Class I Div.2 Gr. A, B, C, D
Class II Div.2 Gr. E, F, G
Class III
---|---|---|---|---|---

Circuit breaker selection

On the following conditions:

• 230 V nominal voltage
• Circuit breaker (C-characteristic)

| Start-up
temperature| Maximum circuit length (m) per circuit breaker
---|---|---
10 A| 16 A| 20 A| 25 A| 32 A
AKO-71212 /
AKO-71212P| 10 ºC| 116| 205| 205| 205| 205
0 ºC| 103| 160| 200| 205| 195
-10 ºC| 81| 143| 192| 195| 195
-20 ºC| 72| 130| 168| 180| 195
-30 ºC| 65| 120| 150| 170| 195
-40 ºC| 58| 110| 132| 160| 180
AKO-71214 /
AKO-71214P| 10 ºC| 75| 145| 162| 162| 162
0 ºC| 66| 115| 135| 150| 162
-10 ºC| 59| 100| 128| 144| 162
-20 ºC| 52| 85| 116| 139| 161
-30 ºC| 48| 77| 106| 135| 160
-40 ºC| 44| 69| 96| 131| 159
AKO-71216 /
AKO-71216P| 10 ºC| 60| 88| 117| 120| 126
0 ºC| 52| 70| 85| 120| 126
-10 ºC| 45| 62| 79| 107| 120
-20 ºC| 41| 52| 70| 89| 109
-30 ºC| 38| 45| 64| 82| 100
-40 ºC| 35| 38| 58| 75| 91
AKO-71218 /
AKO-71218P| 10 ºC| 40| 70| 90| 98| 108
0 ºC| 35| 55| 75| 90| 105
-10 ºC| 31| 50| 68| 82| 98
-20 ºC| 28| 46| 58| 73| 89
-30 ºC| 25| 43| 52| 65| 82
-40 ºC| 22| 40| 46| 57| 75

Nominal power output (On insulated steel pipes at 230 V)

Pipe temperature

Accessories

The appropriate kit should be used to make the connection and cable end sealing.

AKO ELECTROMECÁNICA , S.A.L.
Avda. Roquetes, 30-38
08812 Sant Pere de Ribes.
Barcelona Spain.
357121212 REV.03 2023

We reserve the right to supply materials that might vary slightly to those described in our Technical Sheets. Updated information is available on our website.

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