NoiseKen NCT-160 User manual

INSTRUCTION MANUAL
NOISE CANCELLER TRANSFORMER
MODEL NCT
NOISE LABORATORY CO., LTD.
Edition1.04
AEG00081-00E-0E

NOTICE
•The contents of this instruction manual (the “Manual”) are subject to
change without prior notice.
•No part of the Manual may be reproduced or distributed, in any form or
by any means, without the authorization of Noise Laboratory Co., Ltd.
(the “Company”).
•The contents of the Manual have been thoroughly examined. However, if
you find any problems, misprints, or missing information, please feel free
to contact our sales agent who you purchased our product from.
•The Company assumes no responsibility for any loss or damage
resulting from improper usage, failure to follow the Manual, or any repair
or modifications of this product undertaken by a third party other than the
Company or the agent authorized by the Company.
• The Company assumes no responsibility for any loss or damage
resulting from remodeling or conversion solely undertaken by the user.
• Please note that the Company cannot be held responsible for any
consequences arising from the use of this product.

APPLICATION FOR INSTRUCTION MANUAL
We place an order for an instruction manual.
Model: NCT-
Applicant:
Company name:
Address:
Department:
Person in charge:
Tel No.:
Fax No.
Cut off this page “APPLICATION FORM FOR
INSTRUCTION MANUAL” from this volume and keep it
for future use with care.
When an INSTRUCTION MANUAL is required, fill in the above Application
Form and mail or fax it to the following sales department of our company.
To: Noise Laboratory Co., Ltd.
1-4-4 Chiyoda, Chuo-ku, Sagamihara City,
Kanagawa Pref., 252-0237 Japan
Tel: [phone] Fax: [phone]
Cut
line

Memorundom

1
Thank you very much for your purchasing our Noise Canceller Transformer (NCT).
Before using this unit, thoroughly read this manual and use it as ready reference for operation.
 This manual was prepared so that any person who can observe the prescribed
instruction method and operating precautions may safely handle and fully utilize
this unit.
 Keep this manual by your side or other proper location so that it may be readily
available when using this unit.
<Feature>
♦Having superb attenuation characteristics against impulse noises and lightning surges.
♦Wide variety for both 100V type and 200V type
1. Operation voltage
Use the unit within the operational voltage which is indicated on the label.
If the unit is operated with less than 30% of the rated voltage, voltage fluctuation ratio
increases.
2. Operational current
The rated current is the value with resistance load.
In case of using a switching power supply, note that approximate three times amount of
current of the rated input of the switching power supply intermittently flows in the unit in
one cycle.
3. Specifications
Item
NCT
-
160
NCT
-
1120
NCT
-
1240
NCT
-
260
NCT
-
2120
NCT
-
2240
Primary
Voltage
120V 120V 120V 240V 240V 240V
Secondary
Voltage
120V 120V 120V 240V 240V 240V
Current
5A
10A
20A
2.5A
5A
10A
Frequency
50/60Hz
Voltage
fluctuation
ratio
Less than 10% with 100% load
Less than 4% with 60% load
Impulse
noise
Approx. 6V at normal mode, wave hight 2000V and wave width 1μs
Temaparture
rise
Less than 80°C
Insulation
voltage/
resistance
AC1500V (for one minute) / More than 100MΩat DC500V
(Primary-Secondary wound wire, Primary-Iron core, Secondary-Iron core)
Withstanding
voltage
against surge
7kV at 1.2/50μs
Temperature
/ Humidity
15～35°C / 25～75%
Dimensions
(W)241×
(H)144×
(D)167mm
(W)251×
(H)161×
(D)192mm
(W)275×
(H)200×
(D)220mm
(W)244×
(H)143×
(D)167mm
(W)253×
(H)160×
(D)192mm
(W)278×
(H)202×
(D)218mm
Weight
Approx.
14kg
Approx.
21kg
Approx.
31kg
Approx.
14kg
Approx.
21kg
Approx.
31kg

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4. Environment
Use this NCT unit in normal temperature.
Do not use it outdoors or in a temperature cycle test chamber.
5. How to install
Detach the covers of both side and connect necessary cables to terminals there. When
closing the cover, tighten screws securely.
Figure 1
5-1. Installing to audinary equipment
When connecting to existing equipment, connect it to the secondary side of the NCT at
the place enough far from the signal cable of the protective system and close to the input
power supply (if the AC cable is too long, cut it). If the AC cable has the ground cable,
connect the ground cable to to the ground terminal of the NCT and connect the FG of the
protective system with another cable (approximate 5.5sq). Since the input cable to the
NCT might cause disturbance, it should be separated from the secondary side and the
signal cable.
If the ground cable connecting to the protective system is common with that of another
instrument, noise will transmit to the ground cable so that another countermeasure
should be tyaken.
Figure 2
CC
SG
AC OUT
AC IN SG
保護
システム
FG
Protective
System

3
5-2. In case that common ground is available
Install the NCT and the protective system in a shield room on a copper or anther metal
plate. Follow instructions as follows in those cases.
a) Tear off coating of the backside of the installation hole of the NCT as large as possible
to make this side contact to the metal plate fully and fix them with a screw.
b) In case of using the NCT for a shield room, isolating inside from outside with installing
the NCT at the middle of the shield board and making the primary side outside, the
secondary inside of the shield room is recommendable.
c) In other cases, install the NCT closely to the protective system on the same metal plate
with the way shown as the above a) and ground the protective system to the metal
plate with a short enough cable which has more than 5.5 sq thickness.
6. Notice
6-1. Be sure to use a ground cable for preventing electric shock. Note that the goround
cable might cause disturbance.
6-2. The NCT is effective against noise transmitted from the AC power supply, but has no
effect against noise generating in the instrument itself or electrostatic discharge.
6-3. The NCT itself has capability to endure a lightning surge up to 7kV, but has no filter
effect. Therefore, installing a surge absorber on to the terminal board of the NCT is
recommendable. Since each model of surge abosbers has its own advantage and
disadvantage, careful selection should be necessary.

4
7. Warranty
Servicing terms
The following terms are applicable to servicing by Noise Laboratory Co., Ltd.,
(hereafter referred to as the Company) provided to maintain the intended
performance of its products.
1. Scope
The following terms shall apply only to products made by the Company.
2. Technical servicing fee
In the event of a failure of a product within the warranty period (see warranty
section), the Company will repair a product without charge. After the warranty
expires, repairs will be billed at a nominal cost.
3. Ownership of replacement parts
Any faulty parts replaced in the course of repair services shall belong to the
Company. In the case when repairs are billed to the customer, replaced faulty
parts will be retained by the Company unless other arrangements are made.
4. Limited liability
In the event that damages resulting from servicing by the Company are
intentional or caused by negligence, the Company will pay the cost but at the
purchase value of the relevant product maximum. But, notwithstanding the
foregoing, the Company shall not be responsible for any incidental or
consequential damages of any nature, including without limitation thereof loss
of would-be profit or compensation demanded from a third party.
5. Incorrect parts, missing parts, and damage
In the event that the Company’s product purchased by the customer has
incorrect parts, missing parts, or is damaged, such that the product is not able
to be used, the Company accepts no liability for any losses incurred by the
customer that relate to lost earnings, commercial losses, other secondary
losses, special losses, or indirect or punitive losses. Nor is any liability accepted
for any losses resulting from a responsibility of the customer to compensate any
third party.
6. Refusal to provide repair services
The company may not accept a repair order in the following cases:
More than 5 years have passed since the product discontinued
More than 8 years have passed after delivery
Required component for servicing already discontinued and no alternative
is available.
Product changed, repaired or remodeled without obtaining a prior
permission from the Company.
Product severely damaged to the extent it has lost its original form

5
Limited Warranty
Noise Laboratory Co., Ltd. (hereafter referred to as the Company) warrants its
products to be free from defects in materials and workmanship under normal use
and service for a period of one year from date of delivery. In the event of failure of a
product covered by this warranty, the Company will repair the product or may, at its
option, replace it in lieu of repair without charge.
Notwithstanding the foregoing, the Company shall not be responsible for any
incidental or consequential damages of any nature, including without limitation
thereof loss of would-be profit or compensation demanded from a third party. This
warranty is valid only in Japan.
1. Scope
This warranty shall only apply to products made by the Company.
2. Period
One year from date of delivery.
The warranty may be valid in 6 months after servicing if the same failure on the
same component has repeated.
3. Exclusions
The followings are exclusions from this warranty:
Consumable parts (including mercury relay, HV relay, coaxial cable, coaxial
connector, automatic switch, and contactor)
Failure caused by misuse, neglect, accident or abnormal conditions of
operation
Failure caused by remodeling on the user side without prior permission
from the Company
Failure caused by servicing by unauthorized personnel by the Company
Failure due to fore majeure including but not limited to, acts of God, fire,
war, riot, rebellion and others
Failure due to shock or drop in or after transit
Failure due to operation in environment being out of ambient
specifications.
A unit shipped to overseas

6
8. Maintenance
1. When repair, maintenance or internal adjustment of the unit is required, a qualified
service engineer takes charge of such work.
2. Maintenance on the user side is restricted to the outside cleaning and functional check
of the unit.
3. In case that the fuze of the unit is replaceable, when checking or replacing the fuse, turn
off the switch of the unit and disconnect the plug socket beforehand.
4. When cleaning the unit, turn off the switch of this unit and the connected equipment and
disconnect the plug socket beforehand.
5. Avoid using chemicals for cleaning. Otherwise, the coating of the unit may peel off or the
sight glass may be broken.
6. Do not open the cover of this unit.

7
9. Contacting technical support
If you experience a malfunction, please have available both the model and serial
number of your unit and contact the nearest distributor/agent or Noise Laboratory
Technical Support.
When it is necessary to send your unit back to Noise Laboratory, fill in the repair order
form completely, pack the unit in the original package or equivalent one suitable for
transit, and send the package.

NOISE LABORATORY CO., LTD.
Produced by: Noise Laboratory Co., Ltd.
1-4-4, Chiyoda, Chuo-ku, Sagamihara City, Kanagawa Pref., 252-0237, Japan
TEL: [phone] FAX: [phone]
URL: http://www.noiseken.co.jp
Printed in Japan