Eaton RTC-50 Instruction Manual download pdf (Page 6)

Instruction Booklet IB 70-8698

Instruction Manual for the Eaton RTC-100

Automatic Transfer Switch Controller

EATON CORPORATION www.eaton.com

Effective December 2009

2.7 Specification Summary

Table 1. RTC-100 Controller Specifications

Input Voltage 240 Vac 50/60 Hz

Voltage Measurements of Utility Generator

Voltage Measurement Range 0 to 300 Vac RMS (50/60 Hz)

Voltage Measurement Accuracy ± 6 Vac

Undervoltage Dropout 70% of the Nominal 240 Vac Input Voltage

Undervoltage Pickup 80% of the Nominal 240 Vac Input Voltage

Operating Temperature Range -20 to +70°C (-4 to +158°F)

Storage Temperature Range -30 to +85°C (-22 to +185°F)

Operating Humidity 0 to 95% Relative Humidity (Non-condensing)

Operating Environment Resistant to Ammonia, Methane, Nitrogen, Hydrogen,

and Hydrocarbons

Utility Close and Gen Close Outputs 5 amps @ 250 Vac

5 amps @ 30 Vdc

Load Shed Contacts #1 and #2 5 amps @ 250 Vac

5 amps @ 30 Vdc1

Applicable Testing UL Recognized Component

UL 991 Humidity

IEC 61000-4-2, 61000-4-3, 61000-4-4, 61000-4-5,

61000-4-6, 61000-4-11, 61000-3-2, 61000-3-3

CISPR 11, Class B

FCC Part 15, Class B

Engine Start Contacts 5 amps @ 250 Vac

5 amps @ 30 Vdc

Section 3: Operation

3.1 General

This section specifically describes the operation and functional use

of the RTC-100 controller. The practical use of and operation within

each category will be discussed. In this section, it is assumed that

prior sections of this manual were reviewed and that the operator

has a basic understanding of the hardware.

The RTC-100 controller provides for automatic transfer and re-trans-

fer from source to source. It provides a summary of the RTC-100

controller intelligence and supervisory circuits that constantly moni-

tor the condition of both the Utility and Generator power sources,

thus providing the required intelligence for transfer operations.

These circuits, for example, automatically initiate an immediate

transfer of power when the power fails or the voltage level drops

below a preset value and an alternate source of power is available.

3.2 Operating Voltage and Measurements

The RTC-100 controller operates on an input voltage of 240 Vac with

selectable frequency settings of 50 or 60 Hz.

The RTC-100 controller operates directly from the line sensing inputs

of the Utility and Generator power sources.

All voltage monitoring and measurements are true RMS measure-

ments.

3.3 Typical Transfer Operation

A typical transfer request will begin with a Utility outage (Utility volt-

age falls below the 70% dropout level).

When the Generator source meets the requirements to be consid-

ered available, the TDNE (Time Delay Normal to Emergency) timer

will start timing. TDNE is jumper-programmable at either 20 seconds

or 50 seconds. The 50 second setting may be used to allow for a

longer warm-up period of the Generator. After TDNE times out, the

Utility Close Outputs will open, the Gen Close Outputs will close,

and the Load Shed Contacts will open. This will connect the load to

the Generator source but any loads wired to the Load Shed Contacts

will be disconnected.

When the Utility becomes available (Utility voltage is above the 80%

pickup level), the TDEN (Time Delay Emergency to Normal) timer will

start timing. TDEN is a fixed delay of 10 seconds. After TDEN times

out, the Gen Close Outputs will open, the Utility Close Outputs will

close, and the Load Shed Contacts will be closed. This will connect

all loads to the Utility source.

If used with two wire start generators, a time delay engine start

(TDES) will time down when utility voltage is below the 70% drop-

out. This time delay of 6 seconds allows the utility to return to nor-

mal before the generator is started. A time delay engine cool (TDEC)

timer will time out after the transfer switch transfers load back to the

utility This timer allows the generator to properly cool down before

it is shut down. The timer allows the generator to run unloaded for 5

minutes.

1 2 3 4 5 6 7 8 9 10 11 ... 19 20

Comments to this Manuals

No comments

Eaton RTC-50 Instruction Manual Page 6

Comments to this Manuals

Related products and manuals for Network switches Eaton RTC-50