DD-1 Earthing, phase sequence, break phase blocking relay

Rated current: 100mA
Rated range: 10~40mA, 12.5~50mA, 15~30mA
Current action: coil series: 10 to 20 ma100 Ω, 12.5 ~ 25 ma80 Ω, 15 ~ 30 ma60 Ω;
Coil in parallel: 20 ~ 40 ma25 Ω, 25 to 50 ma20 Ω, 30 ~ 60 ma15 Ω;
Impedance Angle: + 35 °

Main technical parameters

Setting range of relay operation current and coil impedance value

Model	Setting Range （m A)	Coil in series		Coil in parallel
Model	Setting Range （m A)	Current action（m A)	impedance（ Ω）	Current action（m A)	impedance（ Ω）
DD-1/40	10-40	10-20	100	20 - 40	25
DD-1/50	12.5-50	12.5-25	80	25 - 50	20
DD-1/60	15-60	15-30	60	30 - 60	15

Relays of various specifications have an impedance Angle of +35° when the coils are in series or parallel.

Rated current: 100mA, frequency: 50Hz.
Setting calibration error: no more than +6%.
Variation of action value: no more than 6%.
Return coefficient: not less than 0.5.
Power consumption: no more than 0.015VA at the minimum setting current.
Contact capacity: When the voltage is no more than 250V and the current is no more than 0.5a, the relay contact disconnect capacity is (5+0.75ms) 20W in the dc inductive load circuit and 100VA in the AC circuit.
Dielectric strength: The insulation between the relay circuit and the enclosure metal shall withstand the test of ac 50Hz and voltage 2000V lasting for 1min without breakdown or flash over.

Internal wiring

dd 1jd xx dxbsjdq 2

Dimensions and opening dimensions

The relay adopts A11K,A11H,A11Q series housing, external dimensions and installation drawing of opening are shown in figure 3 attached to this manual.

dd 1jd xx dxbsjdq 03

DD-1 Earthing, phase sequence, break phase blocking relay

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