Manual 37351A
MFR 11 Packages - Protection Relay
Page 12/59
© Woodward
WARNING
All technical data and ratings indicated in this chapter are not definite! Only the values indicated under
Technical Data on page 48 are valid!
CAUTION
A circuit breaker must be located near to the unit and in a position easily accessible to the operator.
This must also bear a sign identifying it as an isolating switch for the unit.
NOTE
Inductive devices connected to the system (such as operating current coils, undervoltage tripping
units, or auxiliary/power contacts) must be connected to a suitable interference suppressor.
The following chart may be used to convert square millimeters [mm²] to AWG and vice versa:
AWG mm² AWG mm² AWG mm² AWG mm² AWG mm² AWG mm²
30 0.05 21 0.38 14 2.5 4 25
3/0
95 600MCM
300
28 0.08 20 0.5 12 4 2 35 4/0 120
750MCM
400
26 0.14 18 0.75 10 6 1 50 300MCM
150
1000MCM
500
24 0.25 17 1.0 8 10 1/0 55
350MCM
185
22 0.34 16 1.5 6 16 2/0 70
500MCM
240
Table 3-1: Conversion chart - wire size
Power Supply (
Packages MP
/
VDEW
/
G59
/
SC
)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
18 to 30 Vdc
7
8
0 V
18 to 30 Vdc
Standard
Power supply
Figure 3-3: Power supply
Terminal Description
A
max
Standard power supply unit
(
Packages MP
/
VDEW
/
G59
/
SC
)
8
18 to 30 Vdc
2.5 mm²
7
0 V reference point
2.5 mm²
Wide Range Power Supply (
Packages NU
/
G59N
/
SC+N
)
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
7
8
Wide-range power supply
- / N
+ / L
Power supply
90 to 265 Vac/dc
Figure 3-4: Wide range power supply
Terminal Description
A
max
Wide range power supply unit (
Packages NU
/
G59N
/
SC+N
)
8
90 to 265 Vac/dc
2.5 mm²
7
0 V reference point
2.5 mm²
