®
5
Power Packs for ignition and Spark and Sense mode
Inside of power pack enclosure, on the mounting board there are mounted: transformer P/N
TX-230/110-8000
of
input 230 or 110VAC output 8 000 VAC, wiring base for
MBCE-FR
module, ignition relay, Spark & Sense
circuit and connection terminal block (see Fig. 4, 5 and power pack layout on Fig. 7).
Power pack for use in safe area has Part No
HTSS-PP-230
or
-110
. It is mounted in IP66, lockable cabinet (CS
powder coated or as an option SS). The cabinet has 2 door mounted LED's showing: "POWER ON" and
"IGNITION". P/N includes: the door key, mounting lugs and a gland for HV cable.
Power pack for use in Zone 1 hazardous area applications has Part No
HTSS-PP-230-CEX
or
-110-CEX
.
It is enclosed in the ATEX Exd (detailed marking in p. 4) cast aluminum or as an option stainless steel enclosure
type GUB4, which houses the power pack components (see above) with 4 - 6 cable entry holes ½” NPT.
The status diodes "SYSTEM" and "FLAME" on
MBCE
module are visible through the cover enclosure window.
The GUB4 enclosure has threaded holes to fit correct Ex glands for the power and control cables.
P/N includes one Exd gland for HV cable and up to 4 pcs of Exd stop plugs as the amount of holes can vary.
Other glands are not in the scope of delivery.
Application features
The design of the unit provides a very stable electric arc and repeatable ignition.
The use of interchangeable tip and no adjustable parts ensures long operation with low maintenance costs.
This type of igniter rod design provides trouble-free reliable performance in gas applications, which are
relatively clean.
Heavy dust, humidity, oil and dirt caused by combustion products in the combustion chamber may cause problems
with HT igniters. Fireye recommends High Energy for these applications.
Basic principles on the HTSS igniter use
Strictly observe the temperature limits for individual parts of the igniter - see p. 3. In the case of
expected work at the limit of permissible operating temperatures, appropriate measures should be taken
(e.g. change of the mounting position and method of fixing, use of purge-cooling air)
Igniter tip location should be in the area of the air-gas mixture, as it is recommended for a particular pilot type.
Rod tip position adjustment in each type of gas pilot (igniter) is described in the gas pilot Instruction Manuals.
After ignition of a gas pilot
SP-
32-NG/PG-FD,
SP-32-NG/PG-ND, SP-48-NG/PG-ND
or
SP-48-NG/PG-
FD
types offered by Fireye, the
HTSS
rod does not require
retraction due to the fact that its tip is located in a
low energy primary pilot flame. Consequently, it does not overheat, as it is protected from the more aggressive
influence of the combustion chamber environment. See rod igniter position adjustment in pilot’s Manuals.
In other applications, consult Fireye and be aware of the possible need to retract the igniter rod once the main
flame is established, to prevent overheating. Fireye offers coaxial retraction systems, refer to
SF-2001
High
Energy Igniter tech bulletin, which also shows the retractor options.
FIGURE 3.
Electric wiring diagram of High Tension Igniter type HTSS including rod, HV cable and ignition transformer for Safe or
Hazardous Areas.
Central electrode of
igniter rod
Gas
flame
Rod type
HTSS-xxx-J
Gas
pilot
Grounding screw: connect to the
functional grounding terminal of
ignition transformer
Ignition
Transformer
P/N TX-230/110-8000
(N)
(L1)
Brown
Blue
Green/yellow
Safe Area
HV cable
Brown
Safe Area
Enclosure
Green / yellow
Central electrode of
igniter rod
Rod types:
HTSS-xxx-CEX and
HTSS-xxx-J-CEX
Protective
ground
HV shielded cable
(N)
(L1)
Brown
Blue
Green/yellow
Hazardous Area
Shield of HV cable
Safe Area
Brown
Ignition
Transformer
P/N TX-230/110-8000
Gas
pilot
ATEX Exd Enclosure