Larson Electronics PDU-ATS-100A-208Y.120-3PH Bedienungsanleitung

PDU-ATS-100A-208Y.120-3PH

100-amp Automatic Transfer Switch

208Y/120 3PH - Aluminum - NEMA 3R

Instruction Manual

Thank you for your purchase of the Larson Electronics:

PDU-ATS-100A-208Y.120-3PH, 100-amp Automatic Transfer Switch

WARNING:

READ CAREFULLY BEFORE INSTALLING FIXTURE. RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE.

CRITICAL SAFETY INSTRUCTIONS:

•INSTALLATION SHOULD ONLY BECONDUCTED BY A QUALIFIED ELECTRICIAN IN ACCORDANCE WITH NEC AND ANY

RELEVANT LOCAL BUILDING CODES.

•RISK OFFIRE OR ELECTRIC SHOCK. FIXTURE INSTALLATION REQUIRES KNOWLEDGE OF ELECTRICAL SYSTEMS. IF

NOTQUALIFIED, CONTACT A QUALIFIED ELECTRICIAN.

•BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.

•MAKE SURE THE SUPPLY VOLTAGE IS THE SAME AS THE RATED FIXTURES VOLTAGE.

•TO PREVENT WIRING DAMAGE OR ABRASION, DO NOT EXPOSE WIRING TO EDGES OF SHEET METAL OR SHARP

OBJECTS. SUITABLE FOR DAMP LOCATIONS.

The standard switch enclosure is a National Electrical Manufacturer’s Association (NEMA) and UL 3R type. UL and NEMA 3R type

enclosures primarily provide a degree of protection against falling rain and sleet; undamaged by the formation of ice on the enclosure.

Before installing, operating or servicing this equip-ment, read the SAFETY RULES (inside front cover) carefully. Comply strictly with all

SAFETY RULES to prevent accidents and/or damage to the equip-ment. The manufacturer recommends a copy of the SAFETY

RULES are made and posted near the trans-fer switch. Also, be sure to read all instructions and information found on tags, labels and

decals affixed to the equipment.

The Larson Electronics PDU-ATS-100A-208Y.120-3PH Automatic Transfer Switch is ideal for managing electrical loads between two

sources in industrial facilities. This 100-amp, 208Y/120 three-phase controller handles timing, sensing, exercise functions and transfer

commands. Constructed of aluminum, the unit is housed in a NEMA 3R enclosure.

MOUNTING

PDU-ATS-100A-208Y.120-3PH are wall-mounted or surface-mounted. Install the transfer switch as close as possible to

the electrical loads that are to be connected to it. Mount the switch vertically to a rigid supporting structure. To prevent

switch distortion, level all mounting points. If necessary, use washers behind mounting holes to level the unit.

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3-POLE-MECHANISM

These switches (Figure 1) are used with a three phase system,

when the three phase NEUTRAL line is to be connected to a

NEUTRAL lug and is not to be switched.

Solderless, screw-type terminal lugs are standard.

The conductor size range is as follows:

Switch Rating Wire Range

100 A #6-2/0 AWG

200A #4-400 MCM

Conductor sizes must be adequate to handle the max-imum current to

which they will be subjected; based on the 75°C column of tables,

charts, etc. used to size conductors. The installation must comply fully

with all applicable codes, standards and regulations.

Connect power source load conductors to clearly marked transfer mechanism terminal lugs as fol-lows

1. Connect UTILITY (NORMAL) power source cables to switch terminals N1, N2, N3.

2. Connect EMERGENCY (STANDBY) source power cables to transfer switch terminals E1, E2, E3.

3. Connect customer LOAD leads to switch termi-nals T1, T2, T3.

4. Connect neutral conductors of UTILITY, EMERGENCY and customer LOAD to the neutral block.

Conductors must be properly supported, of approved insulative qualities, protected by approved conduit, and of the

correct wire gauge size in accordance with applicable codes.

Be sure to maintain proper electrical clearance between live metal parts and grounded metal. Allow at least

1/2 inch for 100-400 amp circuits.

CONNECTING START CIRCUIT WIRES

Control system interconnections consist of UTILITY 1 and 2, and leads 23 and 194. Control system interconnection leads

must be run in a conduit that is separate from the AC power lead. Recommended wire gauge sizes for this wiring

depends on the length of the wire, as recommended below:

MAXIMUM WIRE LENGTH RECOMMENDED WIRE

SIZE

460 feet (140m) No. 18 AWG.

461 to 730 feet (223m) No. 16 AWG.

731 to 1,160 feet (354m) No. 14 AWG.

1,161 to 1,850 feet (565m) No. 12 AWG.

PDU-ATS-100A-208Y.120-3PH

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POWER

•PDU-ATS-100A-208Y.120-3PH is compatible with input voltages of 208Y/120 3PH.

•Power source and load connec-tions are made at a transfer mechanism, inside the switch enclosure.

Before connecting wiring cables to terminals, remove any surface oxides from the cable ends with a wire brush. All power

cables should enter the switch next to transfer mechanism terminals. If ALUMINUM con-ductors are used, apply corrosion

inhibitor to con-ductors. Tighten terminal lugs to the torque values as noted on the decal located on the inside of the door.

After tightening terminal lugs, carefully wipe away any excess corrosion inhibitor.

All power cables should enter the switch next to the transfer mechanism terminals.

AUXILIARY CONTACTS

If desired, there are Auxiliary Contacts on the transfer switch to

operate customer accessories, remote advi-sory lights, or remote

annunciator devices. A suitable power source must be connected to

the COMMON (C) terminal. See Figure 2.

Contact operation is shown in the following chart:

Switch Position

Utility Standby

Common to Normally Open Open Closed

Common to Normally Closed Closed Open

Optional

Auxiliary Contact

(Actuated)

Side views shown in Utility position

NOTE:

Auxiliary Contacts are rated 10 amps at 125 or

250 volts AC. DO NOT EXCEED THE RATED

VOLTAGE AND CURRENT OF THE CONTACTS.

MANUAL OPERATION

A manual HANDLE is shipped with the transfer switch. Manual operation must be checked BEFORE the transfer switch is

operated electrically. To check manual operation, proceed as follows:

1. Turn the generator’s AUTO/OFF/MANUAL switch to OFF.

2. Turn OFF both UTILITY and EMERGENCY power supplies to the transfer switch, with whatever means provided

(such as the main line circuit breakers).

3. Note position of transfer mechanism main contacts by observing the display windows, "UTILITY" and "STANDBY",

as follows:

o"UTILITY" window ON, "STANDBY" window OFF - LOAD termi-nals (T1, T2, T3) are connected to utility

termi-nals (N1, N2, N3).

o"UTILITY" window “A” OFF, "STANDBY" window ON - LOAD termi-nals (T1, T2, T3) are connected to

emergency terminals (E1, E2, E3).

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PDU-ATS-100A-208Y.120-3PH

CLOSE TO NORMAL SOURCE SIDE

Before proceeding, verify the position of the switch by observing THE "UTILITY" window. If window reads “ON”, the

contacts are closed in the normal position, no further action is required. If it reads “OFF”, proceed with Step 1.

Step 1: With the handle attached to the actuating shaft, move handle in the direction of the arrow on the switch cover until

it stops — DO NOT FORCE. Release handle slowly to allow the spring in the switch box to relax. “ON” now appears in the

"UTILITY" window and “OFF” appears in the "STANDBY" window.

UTILITY VOLTAGE CHECKS

1. Turn ON the UTILITY power supply to the transfer switch with whatever means provided (such as the UTILITY main

line circuit breaker).

2. With an accurate AC voltmeter, check for correct voltage.

Measure across ATS terminal lugs N1 to N2, N2 to N3, and N1 to N3.

Measure across ATS terminal lugs N1 to NEUTRAL, N2 to NEUTRAL, and N3 to NEUTRAL.

3. Locate the 3 phase power monitor relay. Verify the following:

208 Vac system - LED green and ON

480 Vac system - LED - NORM indicator (green ON)

The factory setting is 80% of nominal voltage (208 Vac systems = 166 Vac dropout)

(480 Vac systems = 384 Vac dropout)

4. If the LED indicator is not ON, then it will be necessary to adjust the power monitor relay setting. Rotate the

adjustment potentiometer in a counter-clockwise direction until the LED turns ON. At this point the 3 phase power

monitor relay is the most sensitive to irregular power line conditions.

5. When certain that UTILITY supply voltage is cor-rect and compatible with transfer switch ratings, turn OFF the

UTILITY supply to the transfer switch.

GENERATOR VOLTAGE CHECKS

1. On the generator panel, set the AUTO/OFF/MANUAL switch to MANUAL position. The gen-erator should crank and

start.

2. Let the generator stabilize and warm up at no-load for at least five minutes.

3. Set the generator's main circuit breaker (CB1) to its ON or CLOSED position.

4. With an accurate AC voltmeter and frequency meter, check the no-load, voltage and frequency. Measure across ATS

terminal lugs E1 to E2, E2 to E3 and E1 to E3.

Measure across ATS terminal lugs E1 to NEUTRAL, E2 to NEUTRAL and E3 to NEUTRAL.

a. Frequency ....................................... 60-62 Hz

b. Terminals E1-E2, E2-E3, E1-E3 ..... 208-212VAC or 470-485

c. Terminals E1-N, E2-N, E3-N ........... 120-122VAC or 272-282

d. It will also be necessary to verify that the phase rotation of the utility matches the phase rotation of the

generator. This can be done by using a phase rotation indicator

PDU-ATS-100A-208Y.120-3PH

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CLOSE TO EMERGENCY SOURCE SIDE

Before proceeding, verify the position of the switch by observing the "STANDBY" window. If the "STANDBY" window reads

“ON”, the contacts are closed in the EMERGENCY (STANDBY) position. No further action is required. If it reads “OFF”,

proceed with Step 1.

Step 1: With the handle attached to the actuating shaft, move the handle in the direction of the arrow on the switch cover

until it stops - DO NOT FORCE. Release handle slowly to allow the spring in the switch box to relax. “OFF” now appears in

the "UTILITY" window and “ON” appears in the "STANDBY" window.

5. When certain that UTILITY supply voltage is cor-rect and compatible with transfer switch ratings, turn OFF the

UTILITY supply to the transfer switch.

6. Set the generator’s main circuit breaker (CB1) to its OFF or OPEN position.

7. Set the AUTO/OFF/MANUAL switch to the OFF position to shut down the generator.

GENERATOR TESTS UNDER LOAD

1. Set the generator's main circuit breaker to its OFF or OPEN position.

2. Manually actuate the transfer switch main con-tacts to their EMERGENCY (STANDBY) position. Refer to “Manual

Operation”.

3. To start the generator, set the AUTO/OFF/ MANUAL switch to MANUAL. When engine starts, let it stabilize for a few

minutes.

4. Turn the generator's main circuit breaker to the ON or CLOSED position. The generator now powers all LOAD

circuits. Check generator operation under load as follows:

a. Turn ON electrical loads to the full rated watt-age/amperage capacity of the generator. DO NOT OVERLOAD.

b. With maximum rated load applied, check voltage and frequency across transfer switch terminals E1 and E2.

Voltage should be greater than 200 volts (208VAC system), 230 volts (240VAC system), or 460 volts

(480VAC system); frequency should be greater than 59 Hz.

c. Let the generator run under rated load for at least 30 minutes. With unit running, listen for unusual noises,

vibration, overheating, etc., that might indicate a problem.

5. When checkout under load is complete, set main circuit breaker of the generator to the OFF or OPEN position.

6. Let the generator run at no-load for several minutes. Then, shut down by setting the AUTO/OFF/MANUAL switch to

its OFF position.

7. Move the switch's main contacts back to the UTILITY position. For example, load connected to utility power supply.

Refer to “Manual Operation”. Handle and operating lever of transfer switch should be in down position.

8. Turn on the utility power supply to transfer switch, using whatever means provided (such as a utility main line circuit

breaker). The utility power source now powers the loads.

9. Set the generator's AUTO/OFF/MANUAL switch to its AUTO position. The system is now set for fully automatic

operation.

PDU-ATS-100A-208Y.120-3PH

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PDU-ATS-100A-208Y.120-3PH

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Section 5 — Mounting Dimensions

RTS “W” Type Transfer Switch

Mounting Dimensions - 100/200A 208V

513.04mm[20.2"]

613mm[24.1"]

TRIPLE EKO SUITABLE

FOR 1", 1.25" & 1.50" CONDUIT

3 PLACES

179.5mm[7.1"]

490mm[19.3"]

61.5mm[2.4"]

41.5mm[1.6"]

MOUNTING HOLES:

Ø6.35mm[Ø0.25"]

4-PLACES

430mm[16.9"]

PDU-ATS-100A-208Y.120-3PH

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Section 5 — Mounting Dimensions

RTS “W” Type Transfer Switch

Mounting Dimensions - 100A 480V

609.6mm[24.0"]

917mm[36.1"]

TRIPLE EKO SUITABLE

FOR 1", 1.25" & 1.50" CONDUIT

3 PLACES

254mm[10.0"]

794mm[31.3"]

60.8mm[2.4"]

61.3mm[2.4"]487mm[19.2"]

MOUNTING HOLES:

Ø6.35mm[Ø0.25"]

4-PLACES

PDU-ATS-100A-208Y.120-3PH

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332mm[13.1"]

TRIPLE EKO SUITABLE

FOR 1", 1.25" & 1.50" CONDUIT

3 PLACES

1220.9mm[48.1"] 1092mm[43.0"]

63.5mm[2.5"]

765.8mm[30.1"]

65.39mm[2.6"]

MOUNTING HOLES:

Ø6.35mm[Ø0.25"]

4-PLACES

635mm[25.0"]

Section 5 — Mounting Dimensions

RTS “W” Type Transfer Switch

Mounting Dimensions - 200A 480V

PDU-ATS-100A-208Y.120-3PH

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Section 6 — Electrical Data

RTS “W” Type Transfer Switch

Interconnection Diagram

DIFFERENT CONDUITS.

RUN IN TWO

LEADSMUST BE

TRANSFER SWITCH

POWER LEADSAND

NOTE:

SINGLE PHASE

UTILITY SUPPLY FROM

SERVICE DISCONNECT

USED ON 3PHASE SYSTEMS

NOTE: E3, N3AND T3WIRESARE ONLY

NOTE:

178AND 183

APPLICATION

NOT USED IN THIS

CONNECTIONSARE

194

ECONNECTION

WIRE 178

CUSTTOMER

NEUTRAL BLOCK

CONNECTION PANEL

QT SERIESENGINE GENERATOR

E2 (E3)

3PHASE

E1 E2

(T3)T2T1

0F4034-

CUSTOMER LOAD

(DISTRIBUTION PANEL)

WIRE

057329-T

NEUTRAL BLOCK

GROUND

RTSTRANSFER SWITCH

(E3)

0D7295

T3T2

(N3)

PDU-ATS-100A-208Y.120-3PH

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Section 6 — Electrical Data

RTS “W” Type Transfer Switch

Wiring Diagram/Schematic 100/200A, 208V

B2A2

B1A1

N2A

N1B

205

126

194

N2A

LEGEND

GTS

NOTES:

1.) ALL CONTACTSSHOWN WITH

TRANSFER SWITCH IN UTILITY

POSITION.

WHITE

RED

LS2

LS3

LS1

T1 T2

235 6

1 4

N1B

N2A

N1B N1A

N1B

N2A

126

C - CONTACTOR ACTUATING COIL

GTS- TRANSFER SWITCH CONTACTOR

PM - POWER MONITOR, 3PHASE UTILITY

TR - RELAY, TRANSFER

TS- TERMINAL STRIP (CUSTOMER CONNECTION)

LS1,LS2,LS3 - LIMIT SWITCHES, ACTUATOR

F1,F2 - FUSE 5A SENSING

ADD JUMPER WIRE FROM PM

TERMINALS1 TO 8.

2.) FOR SINGLE PHASE OPERATION,

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