Emerson 7ATB Testing & Service, Trouble-Shooting Checks, Manual Load Transfer Maintenance Handle

Page 10

TESTING & SERVICE (continued)

TROUBLE-SHOOTING

Note any optional accessories that may be furnished on the ATB and review their operation. Refer to any separate drawings and/or instructions that may be packed with the ATB.

Hazardous voltage capable of causing shock, burns, or death is used in this switch. Do not touch the power or load terminals of the bypass switch or transfer switch!

Table 2-1. Trouble-Shooting Checks.

PROBLEM

CHECK IN NUMERICAL SEQUENCE

1

2

3

 

OPERATION

GEN-SET

VOLTAGE

Engine–generator set does

Hold Transfer Test switch 15

Starting control must be in the

 

not start when the Transfer

seconds or the outage must

automatic position. Batteries

 

Control switch is turned and

be long enough to allow for

must be charged and

–

held in Transfer Test position

Feature 1C time delay plus

connected. Check wiring to

 

or when normal source fails.

engine cranking and starting.

engine starting contacts.

 

 

 

 

 

Transfer switch does not

Wait for Feature 2B time delay

Generator output circuit

Voltmeter should read at least

transfer the load to the

to time out.

breaker must be closed.

90% of nominal phase to

emergency source after the

 

Generator frequency must be

phase voltage between

engine–generator set starts.

 

at least 95% of nominal (57 Hz

transfer switch terminals EA &

 

 

for a 60 Hz system.) *

EC (or EL1 & EL2 for 2 pole)*

 

 

 

 

Transfer switch does not

Wait for Feature 3A time delay

 

Voltmeter should read at least

transfer the load to normal

to time out.

 

90% of nominal phase to

source when normal returns

 

–

phase voltage between

or when the Transfer Control

 

transfer switch terminals NB &

 

 

switch is released.

 

 

NC, NC & NA, & NA & NB (or

 

 

 

NL1 & NL2 for 2 pole).

 

 

 

 

Engine–generator-set does

Wait for Feature 2E time delay

Starting control must be in the

 

not stop after load retransfer

to time out.

automatic position.

–

to the normal source.

 

 

 

 

 

 

 

*These are factory settings. Refer to Controller’s User’s Guide.

If the problem is isolated to circuits on the controller or the transfer switch, call your local ASCO Power Technolo- gies sales office or ASI: in the United States, call 1–800–800–2726. Furnish the Serial No., Catalog No., and Bill of Material (BOM) No. from the transfer switch nameplate.

MANUAL LOAD TRANSFER

MAINTENANCE HANDLE

This procedure manually transfers load to other source if the Transfer Switch or Controller are out of service.

Close enclosure doors to prevent personal injury in case of electrical system fault.

1.Be sure that the Bypass Handle is CLOSED on either Emergency or Normal (see page 3–1).

2.Be sure that the Isolation Handle is in the TEST or ISOLATE position (see page 3–2).

3.Turn the Bypass Handle counterclockwise to OPEN the Bypass Switch. Then Bypass to the other source (see page 3–1).

Bypass and isolate the Transfer Switch before using the maintenance handle! See pages 3–1 and 3–2. Remove the maintenance handle after using it and store it on the frame.

Turn counterclockwise to Emergency.

Turn clockwise

Grasp

to Normal.

handle

 

firmly

slide hub

insert

onto shaft

handle

 

into hole

2---2

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Contents Rating Label Table of ContentsNameplate Page Status Lights Catalog Number Identification4000 1000 1200 1600 2000 2600 3000 4000Page Remove the Shipping Skid InstallationRemove Shipping Brackets / Angles From the Transfer Switch Supporting FoundationInstallation Functional Test Voltage ChecksElectrical Operation Transfer TestDisconnecting the Controller Testing & ServicePreventive Maintenance Transfer TestTROUBLE-SHOOTING Testing & ServiceTrouble-Shooting Checks Manual Load Transfer Maintenance HandleBypass Handle Turn it Clockwise Bypassing & IsolatingPush Pull outTurn crank Counter Clockwise Until Window Shows Bypassing & IsolatingIsolating the ATS Drawout procedure Turn crank Clockwise Until Window Shows Return to ServiceTurn crank clockwise until window shows Conn connected To Un-Bypass Normal Source Return to ServiceBypass Handle Turn it Counter Clockwise To Un-Bypass Emergency SourceIndex See Controller User’s Guide

7ATB specifications

The Emerson 7ATB represents a significant advancement in underwater technology designed for deepwater exploration and data collection. This innovative submersible vehicle is engineered to perform a range of tasks, from scientific research to natural resource exploration, while ensuring safety and efficiency in performance.

One of the standout features of the 7ATB is its robust design, capable of withstanding extreme pressures found at significant ocean depths. The submersible is made from high-strength materials that not only protect its internal components but also reduce weight for enhanced maneuverability. Its streamlined shape minimizes drag, allowing for efficient navigation through the underwater environment.

The 7ATB is equipped with state-of-the-art sensor technology. This includes multi-beam sonar for accurate mapping of the seafloor and advanced imaging systems that capture high-resolution, real-time images and video. The incorporation of in-situ chemical sensors enables the vehicle to analyze water quality and detect various substances, making it invaluable for environmental monitoring.

A key characteristic of the Emerson 7ATB is its advanced autonomy capabilities. The submersible can operate independently for extended periods through automated navigation and mission planning. This autonomy is supported by sophisticated algorithms that allow it to maneuver efficiently and avoid obstacles while performing pre-programmed tasks. Furthermore, it boasts a flexible payload system, accommodating a variety of instruments tailored to specific missions.

In terms of communication, the 7ATB employs a hybrid system that combines acoustic and satellite technologies to maintain a reliable link with the control center, even in remote locations. This ensures real-time data transmission, enabling scientists and operators to make informed decisions during operations.

The vehicle also features battery technology designed for extended operational life, reducing the need for frequent retrieves. This efficiency not only enhances productivity but also minimizes the logistical challenges often associated with deep-sea missions.

Overall, the Emerson 7ATB is a remarkable combination of durability, advanced technology, and operational efficiency, positioning it as a go-to solution for underwater exploration and research in challenging environments. Its innovative features set a new standard for submersible vehicles, revolutionizing how we explore and understand the ocean depths.
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