DM85

industrial relays

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Page 3 of 4

ϕ

ϕ

n

Description of Fig. 4 and 5

A

B

1, 2, 3

1

2

3

- relations between make voltage and ambient temperature at

no load on contacts. Coil temperature and ambient temperature

are equal before coil energizing. Make voltage is not higher than

the value read on Y axis (multiplication of rated voltage).

- relations between make voltage and ambient temperature

after initial coil heating up with 1,1 U , at continues load of I on

contacts. Make voltage is not higher than the value read on Y

axis (multiplication of rated voltage).

- values on Y axis represent allowed overvoltage on coil at

certain ambient temperature and contact load:

- no load

- 50% of rated load

- rated load

nn

10

0

0,6

0,8

1,0

1,2

1,4

1,6

1,8

20

30

40

50

60

70

80

90

100

Breaking capacity [kVA]

Fig. 1

Electrical life at AC resistive load.

Maximum switching frequency at rated load

Power factor

Fig. 2

Electrical life reduction factor

at AC inductive load

DC voltage [V]

Fig. 3

Max. DC resistive load breaking capacity

Ambient temperature

Fig. 4

Coil operating range - DC

Ambient temperature

Coil operating range - AC 50 Hz

Fig. 5