User's Manual

ManualsBrandsEmerson ManualsSwitchSeries 300

381333–201 G

50 Hanover Road, Florham Park, New Jersey 07932–1591 USA

For sales or service call 1 800 800–2726 (ASCO) www.ascopower.com

ASCO POWER TECHNOLOGIES CANADA PO Box 1238, 17 Airport Road, Brantford, Ontario, Canada N3T 5T3

Operator’s

Manual

Seri es 300

Automatic Transfer Switches

H–d es ig n, 600 th rou gh 1200 A

DANGER is used in this manual to warn of a

hazardous situation which, if not avoided, will

result in death or serious injury.

WARNING is used in this manual to w arn of a

hazardous situation which, if not avoided, could

result in death or serious injury.

CAUTION is used in this m anual to warn of a

hazardous situation which, if not avoided, could

result in minor or moderate injury.

600, 800, 1000 A sizes

Refer to the outline and wiring drawings provided with

your ASCO Series 300 ATS for all installation details.

Rating Label

Eac h autom atic transfer switc h contains a rating lab el to

define the l oads and fault circuit withstand / closing ratings.

Refer to the label on the transfer switch for specific values .

Do not exceed the values on the rating label.

Exceeding the rating can cause personal injury or

serious equipment damage.

An experienced licensed electrician must install the

Automatic Transfer Switch (ATS).

TABLE OF CONTENTS

section-page

INSTALLATION 1-1........................

Mounting a nd Line Connections 1-1.........

Engine Starting Contacts 1-2...............

Input / Output Label 1-2....................

Functional Test 1-3, 1-4, 1-5.................

SEQUENCE OF OPERATION 2-1...........

TESTING & SERVICE 3-1..................

Preventive Maintenance 3 -1................

Transfer Test 3-1..........................

Disconnecting the Controller 3-1............

Manual Load Transfer 3-2..................

Trouble- Shooting 3-2......................

ADJUSTMENTS 4-1.......................

Time Delay and Sensor Adjustments 4-1.....

How to Change a Setting 4-2...............

CONTROL FEATURES 5-1.................

Engine Exercisers 5-1, 5-2, 5-3..............

Motor Load Transfer 5-4...................

Load Disconnect & Remote Control 5-4......

INDEX back of manual.....................

Summary of content (20 pages)

PAGE 1
Operator’s Manual Series 300 Automatic Transfer Switches H–design, 600 through 1200 A DANGER is used in this manual to warn of a hazardous situation which, if not avoided, will result in death or serious injury. WARNING is used in this manual to warn of a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION is used in this manual to warn of a hazardous situation which, if not avoided, could result in minor or moderate injury.
PAGE 2
Nameplate Catalog Number Identification The Transfer Switch nameplate includes data for each specific ASCO Series 300 ATS. Use the ATS only within the limits shown on this nameplate. H 300 Neutral B – switched C – overlapping blank – solid B Phase Poles 2 – single Ø 3 – three Ø 3 A typical Catalog Number is shown below with its elements explained.
PAGE 3
neutral connections Controller power connections membrane controls Transfer Switch terminal block TB for engine start and switch position contacts power connections neutral connections 800 and 1000 ampere sizes in typical enclosure with location of customer connections
PAGE 4
Controller membrane controls neutral connections power connections Transfer Switch terminal block TB for engine start and switch position contacts power connections neutral connections 1200 ampere size in typical enclosure with location of customer connections
PAGE 5
SECTION 1 Series 300 Automatic Transfer Switches are factory wired and tested. Installation requires skid removal then securing the enclosure to the supporting foundation. INSTALLATION Testing Power Conductors Remove the Shipping Skid Open the front door and remove the four lag screws (2 in front, 2 in rear) securing enclosure to the wood skid. Supporting Foundation Do not connect the power conductors to the ASCO Series 300 transfer switch until they are tested.
PAGE 6
INSTALLATION (continued) Engine Starting Contacts Customer connections for engine control contact and TS auxiliary contacts connections are located on terminal block TB which is mounted on the front lower left of the transfer switch. Refer to wiring diagram provided with the Series 300 ATS and connect the engine start wires to the appropriate terminals. See Figure 1–1 and Table A. COMMON Table A. Engine start connections.
PAGE 7
INSTALLATION (continued) Functional Test The Functional Test consists of three checks: manual operation, voltage checks, and electrical operation. NOTICE Do these checks in the order presented to avoid damaging the automatic transfer switch. Read all instructions on the Wiring Diagram and labels affixed to the automatic transfer switch. Note the control features that are provided and review their operation before proceeding.
PAGE 8
INSTALLATION (continued) observe these lights Figure 1–5. St andard controls and indicators. 2 – Voltage Checks First check nameplate on transfer switch; rated voltage must be the same as normal and emergency line voltages. Close the normal source circuit breaker. The Normal Transfer 1 Switch Position and the Normal Source Accepted lights should come on.
PAGE 9
INSTALLATION (continued) observe these lights press this button Figure 1–6. Standard controls and indicators. 3 – Electrical Operation This procedure will check the electrical opertion of the Automatic Transfer Switch. See Figure 1–6. The normal source must be available and the generator 1 must be ready to start. Check that the Normal Source Accepted light is on. Press and hold the Transfer Test button until the engine starts 2 and runs. This should happen within 15 sec.
PAGE 10
SECTION 2 SEQUENCE OF OPERATION Transfer To Emergency Lights show position of transfer switch. The sequence for load transfer to emergency source begins automatically when normal source voltage falls below the preset dropout point or when Transfer Test button is pressed. An under voltage condition on any phase of the normal source is detected by the sensor. Lights show the sources accepted. Light for built–in engine exercise timer: ³ blinks rapidly when button is held 5 sec.
PAGE 11
SECTION 3 TESTING & SERVICE PREVENTIVE MAINTENANCE S Check all cable connections & retighten them. Torque to values shown on transfer switch label. For high reliability and long life for the ATS: Replacement parts. When ordering parts provide the Serial and Catalog Nos. from the transfer switch nameplate. Contact ASI. In the US call 1–800–800–ASCO (2726)). Operate the switch at least once a month. Perform this 4–step Electrical Operation Test (test with load transfer).
PAGE 12
TESTING & SERVICE (continued) MANUAL LOAD TRANSFER 1. Open normal and emergency source circuit breakers. This procedure will manually transfer the load if the controller is disconnected. 2. Use the maintenance handle to manually operate transfer switch to the opposite source. See page 1–3, Manual Operation Test. Do not manually operate the transfer switch until both power sources are disconnected: open both circuit breakers. 3.
PAGE 13
SECTION 4 ADJUSTMENTS Time Delay Adjustment To change a setting, follow procedure on page 4-2. Use Table 4-1 as a guide to time delay values and their corresponding adjustment DIP switch or potentiometer. Standard time delays are set to customer specifications (if none specified, standard factory settings are used). Table 4-1.
PAGE 14
ADJUSTMENTS NOTICE (continued) cover Do not make any setting changes while the controller is energized. thumb latch How to Change a Setting 1. Prevent the transfer switch from operating by disconnecting one source first, then the other, as follows: a. If the transfer switch is in the Normal position, open the emergency source circuit breaker. Turn the engine starting control to off. Then open the normal source circuit breaker. b.
PAGE 15
SECTION 5 CONTROL FEATURES – ENGINE EXERCISERS These timers periodically exercise the emergency engine-generator plant. They can be set to exercise with or without load transfer, or they can be completely disabled. The engine-generator should be exercised under load once a week for a minimum time period of 20 minutes, or follow the recommendations of the engine-generator set manufacturer. Refer to page 4–2 for location of DIP switches, battery (provided), and jumper block in the controller.
PAGE 16
CONTROL FEATURES (continued) Optional Accessory 11BG – SOURCE AVAILABILITY SIGNAL & PROGRAMMABLE ENGINE EXERCISER MODULE 2–line display connections for source availability signal contacts 3 buttons Figure 5–2. Accessory 11BG module (mounted behind operator interface and connected to the controller) includes source availability signal contacts and a programmable engine exerciser.
PAGE 17
CONTROL FEATURES (continued) How to Set Optional Programmable Engine Exerciser (part of Acc. 11BG module) NOTE: When choosing bi–weekly operation, the exerciser will always run on the week designated “(1)” on the date display. Hazardous voltage capable of causing shock, burns, or death is used in this transfer switch. Deenergize both Normal and Emergency power sources before programming the exerciser. Navigating the Menu Use the UP and DOWN arrow keys to move through the displays.
PAGE 18
CONTROL FEATURES (continued) INPHASE MONITOR FOR MOTOR LOAD TRANSFER LOAD DISCONNECT FEATURE Inphase monitoring logic controls transfer and retransfer of motor loads, so that inrush currents do not exceed normal starting currents. It avoids nuisance tripping of circuit breakers and mechanical damage to motor couplings. The Motor Load Transfer feature is built into the controller. DIP switch S1 (actuator 5) activates this feature: right = ON, left = OFF.
PAGE 19
CONTROL FEATURES (continued) OPTIONAL STRIP HEATER (Accessory 44) Accessory 44 Strip Heater is designed to keep ambient temperatures within the Automatic Transfer Switch enclosure at acceptable levels. This accessory consists of a mounting bracket with strip heater, thermostat, and terminal block. A transformer with fuses is included when the power for the assembly is derived from voltages above 120 V ac. The 120 V ac customer powered assembly does not include a transformer.
PAGE 20
A accessories, 5–2, 5–5 auxiliary circuits, 1–2 B battery, 4–2, 5–1 buttons, push, 3–1 bypass time delay, 1–5, 2–1, 3–1 C G INDEX strip heater, 5–5 P ground, controller, 1–1 H parts, 3–1 problem, 3–2 handle, maintenance, 1–3 warning, 1–3 programmable engine exerciser, 5–2, 5–3 harness, 1–2 disconnect plugs, 3–1 R HELP 800–800–2726 (ASCO) customercare@asco.