REFRIGERATION AND
AIR CONDITIONING
Technical Info
Time Delay Relay for SC-Twin
SD 117N0001, 220-240V, 50 & 60Hz
Introduction
The time delay relay type SD is
designed for staggered start of
two compressors in the Twin-
version as the one-phase mains
cannot normally be loaded with
the total starting current of both
compressors.
When the time delay relay is used,
rst one compressor is started, and
about 10 seconds later the second
compressor is started. This ensures
the best possible characteristics
and the least load on the mains.
The time delay relay has the
following specication:
Technical data
Code number 117N0001
Voltage 220 - 240 V
Min. supply voltage 187 V
Max. supply voltage 255 V
Mains frequency 50 to 60 Hz
Max. operating current 7 (7) A
Max. starting current 25 A for 4 seconds
Temperature range, operation -10 to 55°C
Temperature range, storage -40 to 70°C
Time delay at 25°C, 220 V 10 to 25 seconds
Mounting orientation to suit installation
Life time 500.000 cycles, 50.000 hours
Enclosure IP 20
Connection cable / spade connectors 3 x 0,75 mm2 / 6.3 mm
SD 117N0001
220 / 240 V 50 / 60 Hz 7(7) A
t 10 - 25 sec.
Black
Brown
L
NBlue
t
1903
73
28
35 14
108
60
12
ø 3.8
550
DEHC.EI.200.J1.02/520N0557 Produced by Danfoss Compressors, DEHC6093, 12.2007
Danfoss Compressors GmbH
Mads-Clausen-Str. 7
D-24939 Flensburg / Germany
compressors.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already
on order provided that such alterations can be made without subsequential changes being necessary in specications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
Wiring diagrams
N
L
Starting relay Starting capacitor
Start winding
Winding protector
Main winding
Thermostat Time delay relay
Black
12
10 11
13
14
12
14
10 11
13
Brown
Blue
1969
CSIR
N
L
5
4
2
1
5
4
2
1
1970
Winding protector
Main winding
Start winding
Starting relay
Starting capacitor
Run capacitor
Bleeder resistance
Thermostat Time delay relay
CSR
BlueBrown
Black
-
1
-
2
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Danfoss Fitters' Notes – Chapter 8 – Compressors Service guide
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