Siemens 7SA511 manual Alarm Relay Contact Test

7SA511 Line Protection Relay Acceptance Tests

Test Procedure

1.Measure the input current while varying the input voltage between the limits indicated in the table below. The values should be within the “Measured Current” range for the corresponding entry in Table 3-3.

Table 3-3.Power Consumption Test

Relay Model Number	Rated Voltage
7SA511*-2*A5*-****	24/48 V
7SA511*-4*A5*-****	60/110/125 V
7SA511*-5*A5*-****	220/250 V

Test Voltage (V)

Min.		Max.
19.2	V	56.0	V
48.0	V	144.0	V
176.0	V	288.0	V

Measured Current (A)

Min.	Max.
0.12 A	0.63 A
0.04 A	0.25 A
0.02 A	0.07 A

Alarm Relay Contact Test

The alarm relay contacts are tested for correct operation in both normal and failure modes. The failure mode is simulated by removing relay power.

Test Procedure

1.Connect ohmmeters or other appropriate continuity checking devices to the relay terminals as indicated in the table below.

2.For the Power On/Off switch settings shown in Table 3-4 (supply or relay), the continuity reading should be as indicated.

Table 3-4.Alarm Relay Contact Test

Power On/Off	Terminals 6A2-6A1
Off	=0
On	W=•

Terminals 6A1-6A3

=•

W=0

July 27, 1995 3-9