DOL 278T
26
Technical Manual
8 Technical data
DOL 278T-1 Medium
DOL 278T-2 Medium
DOL 278T-1 Large
DOL 278T-2 Large
Electrical
Rated voltage
[V AC]
100 – 115 / 200 – 230 ±10 %
Operating voltage
[V AC]
90 – 126,5 / 180 - 253
Frequency
[Hz]
50/60
Output voltage mains oper-
ation
[V AC]
24 ± 30 %
Output voltage battery op-
eration
[V DC]
16-20
Max. motor current
[A]
4.2
8
(E.g. 2 houses with each 2.1 A on one DOL 278T. Simultaneous motor operation in both houses is acceptable
for max. 20 % of the time and for 10 minutes at a time).
(E.g. 1 house with 4.2 A on one DOL 278T. Motor operation is acceptable for max. 20 % of the time and for 10
minutes at a time).
Battery standby charge
voltage
[V]
20.3
Battery charge current
max.
[A]
1.0
Battery fuse (blue “car
type” fuse with flat type
connector)
[A]
15
Battery lamp level
[V]
Green approx. > 80 %
Yellow approx. 80-20 %
Red approx. < 20 %
Battery module, gastight
lead, VRLA type
18 V 4 Ah (3 x 6V 4Ah)
18 V 7Ah (3 x 6V 7Ah)
Phase break approx.
5 sec.
10 sec.
Regulation interval
3 min.
Opening period when DOL
12 is disconnected
2 min. 12 sec. / 4 min.: 24 sec.
Opening period at 1 °C ex-
cess temperature
2 min.: 6 sec. / 4 min.: 12 sec.
Opening period at 10 °C
excess temperature
2 min.: 60 sec. / 4 min.: 120 sec.
Max. DOL 278T operating
time on battery (before
opening)
8 hours
16 hours
Temperature sensor inputs
DOL 278T-1
2 × DOL 12
Relay o24 V time-
modulated DOL 278T-1
2 × 24 V
Temperature sensor inputs
DOL 278T-2
3 × DOL 12
Relay o24 V time-
modulated DOL 278T-2
4 × 24 V
Fuse per 24 V relay output
[A]
7.5
Summary of Contents for DOL 278T
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