Download Relays

Relays.
CURRENT BALANCE RELAY:
Range of setting
Operating Time
75 +/- 45 o Amps
1.6 milli sec
CURRENT BALANCE AUXILLIARY RELAY:
Elec Spec
Resistance at 20 o C
Contract Pressure
Over stroke
853211
775 Ohms
250 +/- 50 gms
2 mm
Single element overload relay Type M5021STR20B2 for compressor and Type M5021STR19B2 for
Motor Generator
TRIP COIL:
Elec Spec
Resistance at 20 o C
850018
0.0422 Ohm
HOLD COIL:
Elec Spec
Resistance at 20 o C
851015
299 Ohm
RESET COIL:
Elec Spec
Resistance at 20 o C
Calibration
Set at
851023
193 Ohms
14-18-22 amps
22 amps
TEST:
1. With 25 volt across the hold coil and 32.5 amps passing through the trip coil, the
overload element must not trip.
2. Reverse Polarity of the hold coil and (repeat 1.)
MOTOR GENERATOR
TRIP COIL:
Elec Spec
Resistance at 20 o C
850018
0.0422 Ohm
HOLD COIL:
Elec Spec
Resistance at 20 o C
851015
2990 Ohm
RESET COIL:
Elec Spec
Resistance at 20 o C
Calibration
Set at
851023
193 Ohm
18-32-46 amps
46 amps
TEST:
1. With 25 volt across the hold coil and 65 amps passing through the overload trip coil, the
overload element must not trip
2. Reverse polarity of the hold coil and (repeat 1.)
H.T INDICATING RELAY TYPE RL 641 A – F 12 M:
Contact type
Wipe
Overstroke
Elec spec
Elec Spec
Resistance at 20 o C
3 +/- 1 mm
About 1 mm
2 mm
853222
851023
2299 Ohm
TRIP COIL:
½ turn of 10 mm x 20 mm
Reset coil
Elec spec
Resistance at 20 o C
Calibration
Set at
851023
193 Ohm
700-900-1100 amps
900 amps
TEST:
1. Relay should reset with 55 volt on the reset coil
CURENT LIMIT RELAY TYPE RL 320A – CB – M
Contact
Contact
Contact
Contact
Wipe
Gap
Over travel
pressure
0.5 mm (approximately)
3 +/- 1 mm
2 mm
50 +/- 10 gms
SHUNT COILS:
Elec Spec
Resistance at 20 o C
853212
Winding c-d 247 Ohms
Winding a-b 237 Ohms
ADJUSTMENT:
1. With the series coils only in circuit the calibration spring should adjusted so that the
moving contacts touch the fixed contact Fingers at 365 amps, passing through the series
coils.
2. With 110 V DC applied to the shunt coil, circuit between wires 301 & 311 (positive to
301) the resistor between wires 302 & 311 should be adjusted until the moving contact
touch the fixed contact fingers at 490 amps, passing through the series coils.
3. With 110 V DC applied to shunt coils circuits between wires 301 & TC6 (positive to 301),
the resistor between wires 311 & T6 should be adjusted unit; the moving contact touch
the Fixed contact fingers at 480 amps, passing through the series coils.
No current relay Type 28EB
SERIES COIL – 6 TURNS OF 8 MM X 32 MM COPPER STRAP:
PICKUP COIL:
Elec Spec
Resistance at 20 o C
Dropout current (series coil)
853013
449 Ohm
5 amps
TIME DELAY RELAY TYPE 28ER8:
Elec Spec
Resistance at 20 o C
Time delay
EMERGENCY LIGHTS RELAY TYPE M18ER5:
800242
364 Ohm
1.5 to 3.5 seconds
OPERATING COIL:
Elec Spec
Resistance at 20 o C
851131
957 Ohm
L.T. INDICATION RELAY/ INCREASE ACCELERATION RELAY:
RELAY TYPE RL 789A-110
Contact gap
Contact pressure
Overstroke
Elec Spec
Resistance at 20 o C
2 to 2.5 mm
30 +/- 10 gms
About 2 mm
853219
1030 Ohm
MAGNETIC COIL (UPPER):
Elec Spec
Resistance at 20 o C
853217
230 Ohm
MAGNETIC COIL (LOWER):
Elec Spec
Resistance at 20 o C
Contact gap
Contact pressure
OVER VOLTAGE RELAY TYPE RL424A1-M:
853216
118 Ohm
2.5 +/- 0.5 mm
200 +/- 50 gms
TRIP COIL (UPPER)
Elec Spec
Resistance at 20 o C
Pick up voltage of Trip Coil
(With the resistor in series with the trip coil)
853218
88 Ohm
120 to 125 volts
MAGNETIC COIL (LOWER):
Elec Spec
Resistance at 20 o C
Contact gap
Contact pressure
8532216
118 Ohm
2.5 +/- 0.5 mm
200 +/- 50 gms
MASTER CONTROLLER TYPE M26MC7:
Contact gap
Finger pressure
(Measured at the contact with finger closed)
2.54 to 3.2 mm
280 to 400 gms
CONTROL CUTOUT SWITCH TYPE M14MS10A1:
Contact gap
Contact pressure
Cam to roller gap
(When fingers are making contact)
3.2 mm
170 gms/min
0.8 mm
PANTOGRAPH OPERATING VALVE TYPE M5015PV2:
OPERATING COIL:
Elec Spec
Resistance at 20 o C
853007
29.9 Ohm
Double pole latched contactor type M8EC4-lights
OPERATING COIL:
Elec Spec
Resistance at 20 o C
851019
102 Ohm
TRIP COIL:
Elec Spec
Resistance at 20 o C
Right hand blow out coil (Main lights)
Four turns of 3.048 x 15.9 mm copper strap
851016
105 Ohm
LEFT HAND BLOW OUT COIL (EMERGENCY LIGHTS):
Elec Spec
Resistance at 20 o C
Minimum pick up
Contact pressure
850004
0.0122 Ohm
65 volts
0.9 to 1.8 kg
Double pole latched contactor type M8EC5-fans
OPERATING COIL:
Elec Spec
Resistance at 20 o C
851019
102 Ohm
TRIP COIL:
Elec Spec
Resistance at 20 o C
851016
105 Ohm
BLOW OUT COILS:
Elec Spec
Resistance at 20 o C
Minimum pick up
Contact pressure
850004
0.0122 Ohm
65 volts
0.9 to 1.8 kg
E.M. CONTACTOR FOR AUXILLIARY COMPRESSOR:
BLOW OUT COIL:
Elec Spec
Resistance at 20 o C
850134
0.01648 Ohm
OPERATING COIL:
Elec Spec
Resistance at 20 o C
851107
1122 Ohm
R.R. RESISTOR:
Main Resistor
Section
Cold Ohm at 20 o C
M16
M12
M13
M14
M15
M17
M19
M21
M22
2.24
0.418
0.335
0.280
0.234
0.202
0.418
0.335
0.280
–
–
–
–
–
–
–
–
–
M17
M13
M14
M15
M16
M18
M21
M22
M23
Weak Field Resistor
Section
M.G. Protective
Resistor MG 3 MG4
Compressor
Protective
Resistor C4 – M32
Cold Ohm at 20 o C
9.7
19.4
M23 – M24
0.234
Battery charging resistor:
0.415 Ohm set at 0.3 Ohm