Type B Vital Relays - Alstom

Tools and Kits
C.4.
VANE RELAY TEST UNIT
Electrical tests for operating values on Type B2 two element vane relays are made with
the test unit shown in Figure C–3 (P/N 20182-111-01). This test unit does not include
the ammeters or volt meters required to read relays local and track operating values.
VANE RELAY TEST UNIT
ON
POWER
ON
FUSE
POWER
LINE/
TRACK
ON
LOCAL
2 AMP
ON
ON
SHUNT
OFF
OFF
– + CURRENT – +
COARSE
FINE
– + VOLTS – +
– + COIL – +
Figure C–3. Vane Relay Test Unit, Front Panel
Unit dimensions are 10" high by 17" wide by 5" deep. Major board components are as
follows:
• Two non-inductive adjustable resistors
• One 50-ohm fixed resistor
• Fuse clips and 2-ampere fuse
• Track element power switch
• Short circuiting switches
• Test jacks for meter hookup
P1457, Rev. Nov/07 C–6 Alstom Signaling Inc.