Ignition transformer
for gas and oil burners
cast aluminum enclosure IP64 / NEMA3
TRE820BOX – Boxed ignition transformer
Inductive ignition transformer for gas and oil burners in cast aluminum enclosure.
Insulated secondary winding suitable for single rod operation. Switchover between ignition and flame detection is performed by the burner control unit.
| EXTERNAL FITTING HOLES | 1 |
|---|---|
| BREAKABLE FITTING HOLES | 2 |
| BREAKABLE PG11 HOLES FOR WIRING | 3 |
| BREAKABLE PG9 HOLES FOR WIRING | 4 |
| M | OPTIONAL PIPE FITTING CLAMP |
|---|---|
| CAST ALUMINUM ALLOY EN AB 46100
OVERALL DIMENSION: 200 x 120 x 71 mm ELECTROSTATIC POLYESTER COATING COLOR: GRAY RAL9006 |
|
POWER SUPPLY INLET
CABLE
3 poles – 380 mm
HI VOLTAGE OUT VIRAS
flush self–tapping screw
18 mm deep
HI VOLTAGE OUT SPRAS
plug Ø 4 mm with sleeve
23 mm deep
| ORDER CODE | DESCRIPTION | NOTE |
|---|---|---|
| 1850.40.10 |
TRE820PISO BOX 230VAC VIRAS Boxed ignition transformer – 230Vac screw |
ACTIVE |
| 1850.30.10 |
TRE820PISO BOX 115VAC VIRAS Boxed ignition transformer – 115Vac screw |
ACTIVE |
| 1850.40.11 |
TRE820PISO BOX 230VAC SPRAS Boxed ignition transformer – 230Vac plug |
ACTIVE |
| 1850.30.11 |
TRE820PISO BOX 115VAC SPRAS Boxed ignition transformer – 115Vac plug |
ACTIVE |
| 1840.01.01 |
HI VOLTAGE CABLE 1300mm | 2 plugs Silicone/Copper 1mm2 20kV -50 +180°C Overmolded 4mm plug – 6.3mm rod plug 90° |
ACTIVE |
| 1840.01.02 |
HI VOLTAGE CABLE 1800mm | 2 plugs Silicone/Copper 1mm2 20kV -50 +180°C Overmolded 4mm plug – 6.3mm rod plug 90° |
ACTIVE |
| 1840.01.03 |
HI VOLTAGE CABLE 1800mm | 1 plug Silicone/Copper 1mm2 20kV -50 +180°C loose end – 6.3mm rod plug 90° |
ACTIVE |
Use unscreened high-voltage cable for the ignition cable: the spark intensity is lower when using a screened cable.
Keep the ignition cable as short as possible: the longer the ignition cable, the lower the spark intensity and greater the generated electrical interferences.
Plugs with integrated 1 kΩ resistor could be optionally used to reduce radio interferences.
A reliable connection to ground must be provided for the transformer and the burner frame, recommended wire gauge > 4 mm2.
2 INDEPENDENT RODS |
|---|
|
BLUE WIRE NEUTRAL – QBK TERMINAL 07 |
|
BLACK WIRE PHASE – QBK TERMINAL 08 |
|
YELLOW GREEN WIRE CONNECT TO GROUND |
|
BROWN WIRE SEC RETURN – CONNECT TO GROUND |
The high voltage creates a spark between the ignition electrode and burner ground.
The flame current flows from the dedicated electrode into the control unit.
1 SHARED ROD |
|---|
|
BLUE WIRE NEUTRAL – QBK TERMINAL 07 |
|
BLACK WIRE PHASE – QBK TERMINAL 08 |
|
YELLOW GREEN WIRE CONNECT TO GROUND |
|
BROWN WIRE SEC RETURN – QBK TERMINAL 10 |
A single electrode used for both ignition and flame detection.
Electrode switched to ground during the ignition. The flame current flows from the electrode through the secondary winding into the control unit.
- • Primary Supply Voltage230 VAC
- 115 VAC
- • Primary Supply Current1 A @ 230V
- 1,9 A @ 115V
- • Frequency50 … 60 Hz
- • Power230 VA
- • Secondary Voltage 18 kV ±10% RMS
- • Secondary Peak Voltage 111 kV
- • Secondary Current 220 mA ±10% RMS
- • Duty cycle19% 3 minutes
- • Enclosurecast aluminum alloy
- • Operating Temperature35°C
- • Temperature ClassB
- • Protection ClassIP64 / NEMA3
- • Weight2550 g
- • Ignition cable length< 5 m
- • Recommended spark gap3 … 5 mm
- • Mounting Position ANY
1 OPEN CIRCUIT
2 SHORT CIRCUIT
The duty cycle indicates for how long the ignition transformer can operate within 180 s.
Max operating time = Duty cycle [%] × 180 s / 100%
Considering 19% duty cycle of TRE820, the maximum operating time is 34 s within 3 minutes.
This means a maximum of 2 ignitions of 5 seconds each are allowed per minute without damages.