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INSTRUCTION SHEET D 3902 3
OUTPUT AMMETER KIT
Models 34C309, 34C414, 34C415, 34C416,
34C417
34C418, 34C419, 35C401, 35C402
For use with
5 thru 10 HP,230 VAC, Three Phase Input
5 thru 125 HP,460 VAC Three Phase Input
5 thru 125 HP,575 VAC Three Phase Input
General Purpose A C VKSR Drives
and
5 thru 10 HP,230 VAC, Three Phase Input
5 thru 150 HP,460 VAC, Three Phase Input
5 thru 150 HP,575 VAC, Three Phase Input
Variable Torque A C VKS Drives
RELIANCE ELECTRIC
WARNING
BEFORE INSTALLING AND/OR ADJUSTING
THIS KIT, THE QUALIFIED ELECTRICAL MAIN
TENANCE PERSON WHO IS FAMILIAR WITH
THIS TYPE OF EQUIPMENT AND THE HAZARDS
INVOLVED SHOULD READ THIS ENTIRE
INSTRUCTION SHEET. FAILURE TO OBSERVE
THIS PRECAUTION COULD RESULT IN BODILY
INJURY.
DESCRIPTION
The Reliance Electric Output Ammeter Kit measures
and indicates the output current in amperes for a wide
range of General Purpose A C VKSR Drive Controllers
and Variable Torque A C VKS Drive Controllers as listed
above. This is the current drawn by the motor or motors.
The kit includes a NEMA 1 enclosure for remote mount
ing of the ammeter if desired. The ammeter with at
tached PC board can also be removed from the NEMA
1 enclosure for mounting in an existing door or panel.
The meter is calibrated at the factory and should not re
quire further adjustment. If field calibration is found to be
necessary, a known reference current at 60 Hertz
should be used. The current readings shown are RMS
values, not instantaneous peak values. The meter accu
racy is "5%.
Tables 1 and 2 list the Output Ammeter Kit which should
be used with each size controller.
Table 1. Ammeter Kit selection for 230 VAC Gener
al Purpose and Variable Torque Controllers.
Output
Meter
General Purpose
Controllers
Variable Torque
Controllers
Output
Ammeter
Kit Model
Meter
Scale
(Amps)
HP
Rating
Model
HP
Rating
Model
34C414
0 - 30
5
24C105
24C6
5
1VT2005
1VT2205
34C415
0 - 50
7 1/2
24C107
24C7
7 1/2
1VT2007
1VT2207
34C416
0 - 50
10
24C110
24C10
10
1VT2010
1VT2210
AMMETER
ENCLOSURE
CURRENT
TRANSFORMER
PC BOARD
Figure 1. Typical kit contents. 2
Table 2. Ammeter Kit selection for 460 VAC and 575 VAC General Purpose and Variable Torque Controllers.
Output Ammeter
Meter
Scale
General Purpose Controllers
Variable Torque Controllers
Output Ammeter
Kit Model
Scale
(Amps)
HP Rating
460 Volt Model 575 Volt Model
HP Rating
460 Volt Model 575 Volt Model
34C418
0 - 20
5
24C4005
24C4205
24C5005
24C5205
5
1VT4005
1VT4205
1VT5005
1VT5205
34C417
0 - 20
7 1/2
24C4007
24C4207
24C5007
24C5207
7 1/2, 10
1VT4007
1VT4207
1VT4010
1VT4210
1VT5007
1VT5207
1VT5010
1VT5210
34C414
0 - 30
10
24C4010
24C4210
24C5010
24C5210
34C415
0 - 50
15
24C4015
24C4215
24C5015
24C5215
15, 20
1VT4015
1VT4215
1VT4020
1VT4220
1VT5015
1VT5215
1VT5020
1VT5220
34C416
0 - 50
20
24C4020
24C4220
24C5020
24C5220
25
1VT4025
1VT4225
1VT5025
1VT5225
34C419
0 - 75
30
24C4030
24C4130
24C4230
24C5030
24C5130
24C5230
34C409
0 - 100
40
24C4040
24C4140
24C4240
24C5040
24C5140
24C5240
30, 40, 50
1VT4030
1VT4130
1VT4230
1VT4040
1VT4140
1VT4240
1VT4050
1VT4150
1VT4250
1VT5030
1VT5130
1VT5230
1VT5040
1VT5140
1VT5240
1VT5050
1VT5150
1VT5250
34C401
0 - 200
75
24C4175
24C4275
24C5175
24C5275
60, 75, 100
1VT4160
1VT4260
1VT4175
1VT4275
1VT41100
1VT42100
1VT5160
1VT5260
1VT5175
1VT5275
1VT51100
1VT52100
34C402
0 - 300
125
24C41125
24C42125
24C51125
24C52125
125, 150
1VT41125
1VT42125
1VT41150
1VT42150
1VT51125
1VT52125
1VT51150
1VT52150
Upon receiving, check the contents of the kit received
with the contents listed in Table 3. Store this equipment
in a clean and dry area until ready to use. The ambient
temperature of the storage area must not exceed 65°C
(149°F) or go below -40°C ( -40°F).
INSTALLATION
NOTE: All components of the Output Ammeter Kit must
be mounted in a clean and dry environment. Maximum
ambient temperature must not exceed 40°C.
WIRE SIZING NOTE: Care should be taken to see that
all interconnecting wiring is sized and installed in con
formance with me National Electrical Code (NEC) pub
lished by the National Fire Protection Association, or the
Canadian Electrical Code (CEC), and other applicable
local codes.
1. Disconnect all power to the A C VKS Drive before
installing this kit.
DANGER
EQUIPMENT IS AT LINE VOLTAGE WHEN A C
POWER IS CONNECTED TO THE A C VKS
DRIVE CONTROLLER. ALL UNGROUNDED
CONDUCTORS OF THE A C POWER LINE MUST
BE DISCONNECTED FROM THE CONTROLLER
BEFORE IT IS SAFE TO TOUCH ANY INTERNAL
PARTS OF THIS EQUIPMENT. AFTER POWER IS
REMOVED, USE A VOLTMETER TO VERIFY
THAT THE D C BUS FILTER CAPACITORS ARE
DISCHARGED BEFORE TOUCHING ANY IN
TERNAL PARTS OF THE CONTROLLER. FAIL
URE TO OBSERVE THESE PRECAUTIONS
COULD RESULT IN FATAL INJURY.
2. Mount the ammeter in the desired location. Use the
provided NEMA 1 enclosure or mount directly in an
existing door or panel. See Figure 6 for the layout
of the mounting holes if the meter is to be door/pan
el mounted. The maximum allowable distance be
tween the ammeter and the current transformer is
200 feet. 3
Table 3. Complete parts list.
Qty.
Description
Part Number
1
1
1
1
2
2
2
2
1
Ammeter for
Kit Model 34C409
Kit Model 34C414
Kit Model 34C415
Kit Model 34C416
Kit Model 34C417
Kit Model 34C418
Kit Model 34C419
Kit Model 35C401
Kit Model 35C402
PC Board for
Kit Model 34C409
Kit Model 34C414
Kit Model 34C415
Kit Model 34C416
Kit Model 34C417
Kit Model 34C418
Kit Model 34C419
Kit Model 35C401
Kit Model 35C402
Enclosure
Current Transformer
Hex Nut (#10 32)
Flat Washer (#10)
Lock Washer (#10)
Taptite Screw
(#10 32 x 3/8")
Tyrap
600437 56N
600437 56X
600437 56Y
600437 56Y
600437 56W
600437 56W
600437 56RB
600437 56RE
600437 56RG
0 51476 48
0 51476 34
0 51476 35
0 51476 35
0 51476 41
0 51476 41
0 51476 47
0 51476 53
0 51476 53
63123 8S
64670 6R
601747 1S
601748 1 C
601748 3G
601741 63B
69306 3F
NOTE: The ammeter should NOT be mounted in the
door of the A C VKS Drive Controller because this
will void the oil tight or water tight characteristics of
the enclosure. Gasketed meters meeting NEMA 12
requirements can be ordered for factory mounting.
3. Disconnect the output power lead that will run thru
the current transformer. Refer to Figure 2 and Table
4 for the appropriate lead number.
NOTE: For the 125 thru 150 horsepower, 460 and
575 volt controllers, remove the power module cov
er, open the two doors, and locate lead 603 at the
bottom of the power module. See Figures 3 and 4.
Remove lead 603 using a 7/16" wrench on the hex
head screw securing the lead to the power module.
Cut the tyrap which secures cable 603 to the right
edge of the power module.
4. Mount the current transformer in the A C VKS Drive
Controller as shown in Figure 4. Secure in place
with the provided hex nuts, flat washers and lock
washers (with the provided taptite screws for 5 thru
50 horsepower, 460 and 575 volt controllers).
DANGER
DO NOT OPERATE THE CONTROLLER WHEN
THE CURRENT TRANSFORMER IS NOT CON
NECTED TO THE AMMETER. DAMAGE TO THE
CURRENT TRANSFORMER MAY OCCUR AND
HAZARDOUS VOLTAGE MAY OCCUR. FAILURE
TO OBSERVE THIS PRECAUTION COULD RE
SULT IN FATAL INJURY.
5. Run the power lead disconnected in Step 3 thru the
current transformer and reconnect the lead to the
terminal from which it was disconnected.
NOTE: For the 125 thru 150 horsepower, 460 and
575 volt controllers, reconnect lead 603 to the pow
er module with the 7/16" hex head screw removed
in Step 3. With the provided tyrap, secure cable 603
to the right edge of the power module.
6. Using #16 AWG twisted pair rated 600 volts, con
nect the two terminals of the current transformer to
terminals 419 and 519 of the ammeter. See Figure
2. Polarity of these connections is not important.
Current flow is approximately 0.8 amp maximum.
7. Replace the power module cover on the 125 thru
150 horsepower, 460 and 575 volt controllers.
8. Re apply power to the A C VKS Drive.
Table 4. Power lead used with current transformer.
Controller
HP
Rating
Input
Voltage
Lead
Number
Lead Location
5-10
230
601
Power Terminal Board
5-25
460, 575
603
Power Terminal Board
30-50
460, 575
603
Power Terminal Board (1)
60-100
460, 575
602
Output Terminal Board
or Motor Overload Block
125-150 460, 575
603
Power Module
(1) If lead 603 is not there, the motor has not been connected to the
A C VKS Drive Controller. Run lead 603 thru the current transform
er at the time the motor is connected . 4
5-10 HP, 230 VAC, 3F CONTROLLERS
5-25 and 125-150 HP, 460 VAC OR 575 VAC,
3F CONTROLLERS
30-50 HP, 460 VAC OR 575 VAC,
3F CONTROLLERS
60-100 HP, 460 VAC OR 575 VAC,
3F CONTROLLERS
A C
MOTOR
OUTPUT
AMMETER
A C
MOTOR
A C
MOTOR
A C
MOTOR
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
OUTPUT
AMMETER
OUTPUT
AMMETER
OUTPUT
AMMETER
Figure 2. Connection Diagram.
LEAD 603
Figure 3. Location of lead 603 in 125 thru 150 horsepower, 460 and 575 volt controllers. 5
CURRENT TRANSFORMER
MOUNTS ON 2 STUDS
ON BRACKET
601
603
603
602
CURRENT TRANSFORMER MOUNTS
AT 2 PRE DRILLED HOLES IN BRACKET
CURRENT TRANSFORMER MOUNTS
AT 2 PRE DRILLED HOLES IN BRACKET
5-10 HP, 230 VAC,
3F CONTROLLERS
5-25 HP, 460 VAC OR 575 VAC,
3F CONTROLLERS
CURRENT TRANSFORMER MOUNTS
AT 2 PRE DRILLED HOLES IN BRACKET
CURRENT TRANSFORMER MOUNTS
ON 2 STUDS ON BRACKET
30-50 HP, 460 VAC OR 575 VAC,
3F CONTROLLERS
60-100 HP, 460 VAC OR 575 VAC,
3F CONTROLLERS
125-150 HP, 460 VAC OR 575 VAC,
3F CONTROLLERS
Figure 4. Location of current transformer in controller. 6
CALIBRATION
The calibration of the ammeter is factory set and no fur
ther adjustment should be needed. If calibration is re
quired, operate the A C VKS Drive at 60 Hertz and use
a clamp on test ammeter on the motor lead running thru
the current transformer. Adjust the output ammeter to
read the same as t