ABB CP3200 User manual

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Page 1

+/- 190Vdc Line Power Circuit Cable Pair

Verification Procedure

Purpose:

The following details the procedure for the verification of existing installed cable pair service for +/- 190V Line

Power circuits.

Each cable pair will be verified.

Cable pairs passing will be recorded for future reference with inactive pairs being marked for out of service.

Test Equipment:

The required test equipment will include the following:

• Multi-meter

• CP3200 +/- 190V Line Power System

Test Procedure:

Perform the following steps for each cable pair.

Record the results in the table provided at the end of this document.

Testing will be performed in two manners.

These include testing for the presence of AC voltage on the open ended conductor pairs and testing for presence

of dc voltage on cable pairs.

Test Parameters:

• Insure the outboard side of the cable pairs have not been terminated

• Insure that NO surge protection devices are in place during the verification testing.

• Insure NO cable pair bridge taps have been inserted.

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Testing for The Presence of AC Voltage:

Using your multi-meter set for AC voltage, measure for the presence of AC voltage between the following:

• Between Tip and Ring

• Between Tip and Ground

• Between Ring and Ground

Note: If voltage is present on any of the preceding measurements for each cable pair, note that cable pair in the

following table 1. That AC fault must be cleared to proceed in using that cable pair.

Adjust the meter to read AC voltage and carefully connect the multimeter leads to the RING and TIP terminals for

each cable pair connection. If any AC voltage is measured, note the level on Table 1.

Adjust the meter to read AC voltage and carefully connect the multimeter leads to the RING and TIP terminals for

each cable pair connection. If any AC voltage is measure, note the level on Table 1.

Adjust the meter to read AC voltage and carefully connect the multimeter leads to the RING and GROUND terminals

for each cable pair connection. If any AC voltage is measure, note the level on Table 1.

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Testing for The Presence of DC Voltage:

Using your multi-meter set for DC voltage, measure for the presence of DC voltage between the following:

• Between Tip and Ring

• Between Tip and Ground

• Between Ring and Ground

Note: If voltage is present on any of the preceding measurements for each cable pair, note that cable pair in the

following table 1. That DC fault must be cleared to proceed in using that cable pair.

Adjust the meter to read DC voltage and carefully connect the multimeter leads to the RING and TIP terminals for

each cable pair connection. If any DC voltage is measured, record the data in Table 1.

Adjust the meter to read DC voltage and carefully connect the multimeter leads to the TIP and GROUND terminals

for each cable pair connection. If any DC voltage is measured, record the data in Table 1

Adjust the meter to read DC voltage and carefully connect the multimeter leads to the RING and GROUND terminals

for each cable pair connection. If any DC voltage is measured, record the data in Table 1.

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Testing for Loop Pair Insulation Resistance

The purpose of verifying the loop pair insulation resistance test is to establish the insulation has not broken down

to the point of a short circuit condition.

Test Parameters:

• Insure the outboard side of the cable pairs have each been shorted.

• Insure that NO surge protection devices are in place during the verification testing.

• Insure NO cable pair bridge taps have been inserted.

• Insure that NO power has been applied to the cable pairs during this test.

AC Presence

Pass - Fail Tip to Ring

Resistance

Ring to Ground

Resistance

Tip to Ground

Resistance

CABLE Pair

Pass/Fail

Procedure

Using your multi-meter set for ohms (resistance) measurement. IF any pair reads less than 100K ohm, discard that

pair. For each cable pair, measure the value of insulation resistance between the following terminals.

• Between Tip and Ring

• Between Tip and Ground

• Between Ring and Ground

Note: If the insulation resistance reads less than 100K ohms on any pair, do not use for Line Power.

Table 1 Recorded Data

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Loop Pair Insulation Resistance Testing

Adjust the meter to the ohms range and carefully connect the multimeter leads to the RING and TIP terminals for

each cable pair connection. If any resistance is measured > 100K ohms, do not use for Line Power.

Adjust the meter to the ohms range and carefully connect the multimeter leads to the TIP and GROUND terminals

for each cable pair connection. If any resistance is measured > 100K ohms, discard that pair

Adjust the meter to the ohms range and carefully connect the multimeter leads to the RING and GROUND terminals

for each cable pair connection. If any resistance is measured > 100K ohms, do not use for Line Power.

Full System Test

Using a CP3200 to turn up the individual cable pairs, sequentially add line cards. After the insertion of each line

card, confirm the “Green Lights” are illuminated as each circuit card is added. If any light show as “RED” move the

card to a different circuit pair and tag that cable pair. Do not sign off on the site until all the circuits show “GREEN”

for a full day.

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Notes:

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Page 7

Notes:

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We reserve the right to make technical changes or modify the

contents of this document without prior notice. With regard

to purchase orders, the agreed particulars shall prevail.

ABB does not accept any responsibility whatsoever

for potential errors or possible lack of information in this

document.

We reserve all rights in this document and in the subject matter and

illustrations contained therein. Any reproduction, disclosure to third

parties or utilization of its contents – in whole or in parts – is

forbidden without prior written consent of ABB.

ABB

601 Shiloh Rd.

Plano, TX USA

abbpowerconversion.com

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