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MD7PA

EM-8056  Rev.4  P. 3 / 5

TERMINAL CONNECTION

Connect the unit as in the diagram below.
Be sure to ground the DIN rail on which the unit is mounted and cross-wire between the rail and FG terminal of the protected 
device as shown in Figure 1 in order to equalize the earth potential.
When the unit is connected with a device which has no FG terminal, ground the surge protector only.

 

EXTERNAL DIMENSIONS  unit: mm (inch)

8
6
5
4

1
2
3
7

4

1

5

2

6

3

8

7

95 (3.74)

7

(.28)

98 (3.86)

[1.5 (.06)]

8–M3 EURO 

TERMINAL

DIN RAIL

(35 mm wide)

DIN RAIL

ADAPTOR

WIRE INSERTION ANGLE: approx. 20°

57 (2.24)

1.9 (.07)

 

Figure 1. GROUNDING

M-RESTER

PROTECTED

EQUIPMENT

FG

CROSSOVER WIRE

Cross-wire from the DIN rail to the metal housing of the protected device 
to equalize the ground potential.
Ground only the surge protector when the protected device has no 
grounding terminal.

DIN RAIL ADAPTOR

(for grounding)

DIN RAIL

Grounding

 

CAUTION WHEN WIRING

Hold the module steady at the front when you 
tighten/loosen screw terminals.

056 222 38 18

[email protected]

www.sentronic.com

SENTRONIC

AG

Summary of Contents for MD7PA

Page 1: ...protection level Up 4kV 1 2 50 µs 60V 800V 800V 1 Leakage current Uc 5µA 5µA 5µA 1 Response time 4 nsec 20 nsec 20 nsec 1 Approx capacitance 10 kHz 1500 pF 100 pF 100 pF 1 Max discharge current Imax 20kA 8 20 µs 1 0kA 10 350 µs Nominal current IN 400mA Internal series resistance 1 5Ω 10 per line 1 Values for the MD7PA FF Shortcircuited for the MD7PA FG POINTS OF CAUTION ENVIRONMENT Indoor use When...

Page 2: ...e DIN rail B Push in the lower in keeping pressing the unit to the DIN rail C DIN rails generally have slight individual variability in size If you find it difficult to push in the lower part go back to A and hang the upper part more deeply onto the rail and try B again A DIN Rail B REMOVING THE UNIT A Push down the spring loader utilizing a minus screwdriv er B Confirm that it is pulled enough do...

Page 3: ...1 2 3 7 4 1 5 2 6 3 8 7 95 3 74 7 28 98 3 86 1 5 06 8 M3 EURO TERMINAL DIN RAIL 35 mm wide DIN RAIL ADAPTOR WIRE INSERTION ANGLE approx 20 57 2 24 1 9 07 Figure 1 GROUNDING M RESTER PROTECTED EQUIPMENT FG CROSSOVER WIRE Cross wire from the DIN rail to the metal housing of the protected device to equalize the ground potential Ground only the surge protector when the protected device has no groundin...

Page 4: ...ntial Ground only the surge protector when the protected device has no grounding terminal PA BUS DIN RAIL ADAPTOR for grounding DIN RAIL Grounding 3 4 Crossover Wire 5 NETWORK CONFIGURATION Protected Devices Nodes M RESTER G G G G G G G Protected Devices Nodes When the distance between nodes are relatively long e g grouped and separated by cabinets install the MD7PA by each group of devices Insert...

Page 5: ...the DIN rail is connected to the metal enclosure of protected device 3 Make sure that the surge protector is securely attached to the DIN rail and that the rail is grounded to earth DISCHARGE ELEMENT 1 Remove all wiring connected to the surge protector when you test the module 2 Check resistance across the following terminals on the high resistance range of multimeter and confirm no con duction Te...

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