Delta Elektronika EST 150 Product Manual

PRODUCT

EST 150

MANUAL.

DELTA ELEKTRONIKA

DC POWER SUPPLIES

EST150 DELTA ELEKTRONIKA BV

Safety Instructions

Caution

The following safety precautions must be observed during all phases of operation, service and repair of this
equipment. Failure to comply with the safety precautions or warnings in this document violates safety standards
of design, manufacture and intended use of this equipment and may impair the built-in protections within.
Delta Elektronika shall not be liable for user’s failure to comply with these requirements.

Installation Category

The Delta Elektronika power supplies have been evaluated to installation category II.(Over voltage category II)

Grounding of Mains Input

This product is a safety Class 1 instrument. To minimize shock hazard, the instrument chassis must be
connected to the AC Power Supply mains through a three or four conductor power cable for resp. a single or
three phase unit, with the ground wire firmly connected to an electrical ground (safety ground) at the power
outlet.

For instruments designed to be hard-wired to supply mains, the protective earth terminal must be connected to
the safety electrical ground before another connection is made. Any interruption of the protective ground
conductor, or disconnection of the protective earth terminal will cause a potential shock hazard that might cause
personal injury.

Grounding of Power Output

If the output of a unit is specified to deliver max 60Vdc, and either the negative or positive power output is
grounded, the voltage on the following connections can be considered safe:

- power outputs and sense connections

- programming/monitor/status-signals, Interlock, Master/Slave-connections, ACF/DCF-relay

- all Delta Elektronika interfaces.

Warn ing:

When the pos i tive power out put can ex ceed 60Vdc in re spect to the neg a tive out put,
ad di tional ex ter nal mea sures must be taken to en sure safety iso la tion

- power out puts and sense con nec tions.

Warn ing:

When the neg a tive power out put of t he unit can ex ceed 60Vdc / 42.4Vpk in re spect to ground,
ad di tional ex ter nal mea sures must be taken to en sure safety iso la tion

- power out puts and sense con nec tions

- pro gram ming/mon i tor/sta tus-sig nals, In ter lock, Mas ter/Slave-con nec tions, ACF/DCF-re lay

- in ter faces with op er a tional iso la tion

- non-iso lated in ter faces.

of the fol low ing:

of the fol low ing:

Caution 1: If a low voltage unit has both power outputs floating, or if the output is in series with an external high
AC or DC voltage, the negative power output can exceed the safe value in respect to ground as specified in the
above warning!

Caution 2: Although a high voltage unit is set to a safe voltage below 60V, for safety it must always be
considered as high voltage unit! Wrong operation, a programming error or an external defect can result in an
unsafe high output voltage.

Caution 3: When programming a high voltage unit directly via a PC or via a network connection, either ground
the negative power output or use a safety isolated interface!

For more information and schematics regards Grounding and Safety, see the special application note "Safe
operation of a power supply" on the Delta Elektronika website.

Rev. March 2017 SAFETY INSTRUCTIONS Page 1 - 6

DELTA ELEKTRONIKA BV EST150

Fuses

Fuses must be changed by authorized Delta Elektronika service personnel only, for continued protection against
risk of fire.

Input Ratings

Do not use an AC Supply which exceeds the input voltage and frequency rating of this instrument. The input
voltage and frequency rating of the Delta Elektronika power supply series are stated in de accompanying
datasheet.

Live Circuits

Operating personnel must not remove the instrument cover. No internal adjustment or component replacement is
allowed by non Delta Elektronika qualified personnel. Never replace components with the power cable
connected. To avoid injuries, always disconnect power, discharge circuits and remove external voltage sources
before touching components.

Parts Substitutions & Modifications

Parts substitutions and modifications are allowed by authorized Delta Elektronika service personnel only. For
repairs or modifications the unit must be returned to a Delta Elektronika service facility.

Removal of (safety) covers

Safety cover(s) are used to cover po ten tially haz ard ous volt ages.
Ob serve the fol low ing when re mov ing safety cover(s):

- Switch off the unit.

- Dis con nect the unit from the mains sup ply.

- Wait for 3 min utes to al low in ter nal ca pac i tors to dis charge.

- Un screw the screws and re move the cover(s).

- Al ways place the cover(s) back be fore con nect ing the unit to the mains sup ply again.

Page 2 - 1 SAFETY INSTRUCTIONS Rev. March 2017

EST150 DELTA ELEKTRONIKA BV

!

Environmental Conditions

The Delta Elektronika power supplies safety approval applies to the following operating conditions:

• Indoor use

• Ambient temperature : -20 to 50 °C

• Maximum relative humidity : 95%, non condensing, up to 40 °C

: 75%, non condensing, up to 50 °C

• Altitude: up to 2000m

• Pollution degree 2

Caution risk of electrical Shock

Instruction manual symbol. The instrument will be marked with this symbol when it is
necessary for the user to refer to the instruction manual

Protective ground conductor terminal

Off (supply)

o

I

On (Supply)

WEEE

(Waste Electrical & Electronic Equipment)
Correct Disposal of this Product

This marking shown on the product, its packing or its literature indicates that
it should not be disposed with other wastes at the end of its working life, but
should be collected separately to recycle it responsibly to promote the
sustainable reuse of material resources.

Rev. March 2017 SAFETY INSTRUCTIONS Page 2 - 2

DELTA ELEKTRONIKA BV EST150

DESCRIPTIONS

1) OUT PUT

The out puts of the EST150 can ei ther be used as a con stant volt age
source with cur rent lim it ing or as a con stant cur rent source with volt ­age lim it ing.

The change of mode oc curs sharply at the cross ing of the volt age
and cur rent set tings. Fig. 3 - 1 shows the out put ranges.

• OVER LOAD PRO TEC TION

The power sup ply is f ully pro tected against all over load con di tions,
in clud ing short cir cuit.

2) IN PUT VOLT AGE

The power sup plies have a wide in put volt age range.

3) IN PUT CUR RENT

The units have ac tive power fac tor cor rec tion (PFC). The in put
cur rent will there fore be al most a sine wave. This means the
rms-value and the har monic dis tor tion of the in put cur rent will be
rel a tively low.

4) EFFICIENCY

The ef fi ciency is very high and con stant over a wide out put cur rent
range. High ef fi ciency also means low power loss and low heat
gen er a tion.

EST 150, 20 V

output 1 and 2

EST 150, 10 V

output 3

fig. 3 - 1

The two out put ranges, ev ery point in the

hatched ar eas can be used.

The left and mid dle out puts op er ate in the

20 V / 2.5 A range. The right out put op er ates

in the 10 V / 5 A range.

fig. 3 - 2

Mea sur ing CV-reg u la tion

5) CV REG U LA TION

The CV-load reg u la tion should be mea sured di rectly on the out put
ter mi nals (see fig. 3 - 2). A few cm of ca ble can have a volt age drop of
sev eral mV (at high cur rent !).

6) RIP PLE & NOISE

The out put rip ple is very low with al most no spikes. The rip ple
volt age has to be mea sured di rectly on the out put ter mi nals us ing a
probe with very short con nec tions (t o avoid pick up of mag netic
fields) (see fig. 3 - 3).

Note:

to get re li able re sults, the back ground noise level should be

lower than the out put rip ple.

7) TRACK ING MODE

When the unit op er ates in Track ing Mode, the CV po ten ti om e ter for
the out put 1 sets the volt age for both out put 1 and 2.

In this mode a Dual Volt age Sup ply with an equal neg a tive and
pos i tive volt age can be cre ated (see fig 3 - 4).

Both out puts can also be con nected in se ries or par al lel to cre ate a
unit with twice the out put volt age or cur rent.

Both CC po ten ti om eters have to be set sep a rately.

8) PUL SATING LOAD

To avoid over heat ing of the out put ca pac i tors, the AC com po nent of
the load cur rent should be lim ited (see fig. 3 - 5).

One method of de creas ing the AC cur rent through the out put
ca pac i tor is by us ing a large ex ter nal elec tro lytic ca pac i tor in par al lel
with the load.

Care must be taken the ca pac i tor in com bi na tion with the lead
in duc tance will not form a se ries res o nant cir cuit!

fig. 3 - 3

Mea sur ing rip ple voltage

1 2 3

fig. 3 - 4

Dual Volt age Sup ply in Track ing mode

9) IN SU LA TION

For safety rea sons the in su la tion of the sep a rat ing com po nents
(trans form ers) be tween in put and out put is tested at 3750 Vrms for
1 min ute. This is tested be fore as sem bly.

Page 3 - 1 DESCRIPTIONS Rev. March 2017

fig. 3 - 5

Pul sat ing load cur rent

EST150 DELTA ELEKTRONIKA BV

Warn ing! Af ter wards the 3750 Vrms can not be tested on the
as sem bled unit be cause the in su la tion be tween the com po nents on
the in put side and the case (like the bridge rec ti fier) is spec i fied at
2500 Vrms. Since the in su la tion be tween out put and case is low (only
600 V DC), the in su la tion be tween the pri mary com po nents and case
will break down when 3750 Vrms is ap plied be tween in put and out put
(2500 Vrms + 600 V DC < 3750 Vrms) (see also fig. 3 - 6).

Note: when test ing the in su la tion, take care to slowly (e.g. in one
sec ond) charge and dis charge the ca pac i tors be tween in put - case
and out put - case. This to pre vent high peak cur rents, which could
de stroy the power sup ply. Make sure to dis charge the ca pac i tors
com pletely be fore us ing the unit again.

10) RFI SUP PRES SION

fig. 3 - 6

In su la tion test volt ages

Both the in put and out put have RFI fil ters, re sult ing in very low
con ducted RFI to the line and load. Due to the out put fil ter the out put
volt age is very clean, hav ing al most no spikes.

The com bi na tion of RFI fil ters and the closed metal case re sults in a
low ra di ated RFI.

11) OP ER ATING TEMP

At full power the op er at ing tem per a ture range is –20 to +50 °C.
From 50 to 60 °C the out put cur rent has to be de rated lin early to 75 %
at 60 °C (see fig. 3 - 7). These tem per a tures hold for nor mal use.

12) THER MAL PRO TEC TION

A ther mal switch shuts down the out put in case of in suf fi cient cool ing.
Af ter cool ing down, the unit will start work ing again.

13) HOLD - UP TIME

The hold - up time de pends on the load, out put volt age and line in put
volt age. A smaller load or a lower out put volt age re sults in a lon ger
hold - up time (see fig. 3 - 8). The in flu ence of the line in put volt age is
lim ited be cause of the ac tive PFC.

14) TURN ON DE LAY

The out put volt age is avail able 0.25 sec af ter mains switch on.

15) IN RUSH CUR RENT

The in rush cur rent is lim ited with a 30 Ohm NTC to about 10 A when
the NTC is cold.

16) COOLING

The cool ing is by nat u ral con vec tion, no noisy blow ers are pres ent.
The unit should have suf fi cient free space. A dis tance of min i mum 5
cm around the unit is rec om mended.

For long life the tem per a ture of the air sur round ing the unit, should
be be low 35 °C

un der nor mal con di tions.

Un der ex treme con di tions it should be be low 50 °C.

fig. 3 - 7

Op er at ing tem per a ture ranges

17) SERIES OP ER A TION

Se ries op er a tion is al lowed up to 600 V to tal volt age. The power
sup plies can be con nected in se ries with out spe cial pre cau tions.

Note: when two or more out puts are con nected in se ries, the
max i mum cur rent is lim ited by the high est CC potmeter set ting.

Hold-up time vs V

fig. 3 - 8

with I

out

as a pa ram e ter

out

18) PAR AL LEL OP ER A TION

Par al lel op er a tion of the units has no lim i ta tions. The power sup plies
can be con nected in par al lel with out spe cial pre cau tions.

Rev. March 2017 DESCRIPTIONS Page 3 - 2

DELTA ELEKTRONIKA BV EST150

OPERATING MANUAL

1) OP ER ATING THE UNIT FOR THE FIRST TIME

• Check there is no con den sa tion on the unit. If there is, al low some time
to dry.

• For all three out puts set the CV and CC po ten ti om eters t o min i mum
(fully anticlockwise).

• Switch on the unit.

• For the out put 1 push the "OUT PUT ON/OFF" but ton to turn it on.
Turn both the CV and CC po ten ti om e ter a few turns clock wise.
A volt age should be pres ent on this out put.
By press ing the "DIS PLAY SE T TINGS" but ton, t he me ters will show
the set ting of the CV and CC po ten ti om e ter for this out put.

• Re peat above step for the other two out puts.

• Check the cool ing on the back side of the unit is not ob structed.

• Now the unit is ready for op er a tion. All three out puts are in de pend ent
and float ing (see fig. 4 - 1)

• Each out put can be used as a Volt age Source (unit in CV-mode) or as
a Cur rent Source (unit in CC-mode).

2) TRACK ING MODE

• Push the "TRACK ING ON/OFF" but ton. Both out put 1 and 2 will turn off
and the LED for Track ing Mode will light.

• Turn CV po ten ti om e ter for out put 1 to min i mum (fully anticlockwise).
This po ten ti om e ter con trols both out put 1 and 2 in the Track ing Mode.
The CV po ten ti om e ter for out put 2 is dis abled in this mode.

20 V / 2.5 A 20 V / 2.5 A 10 V / 5 A

fig. 4 - 1

Tri ple Mode

−20 V and +20 V / 2.5 A 10 V / 5 A

fig. 4 - 2

Dual Volt age Track ing Mode

• Turn both CC po ten ti om eters to min i mum. Both the CC potentio­me ters have to be set sep a rately.

• Push the "OUT PUT ON/OFF" but ton for out put 1 to turn both out put 1
and out put 2 on.

• Turn the CV po ten ti om e ter for out put 1 and both CC po ten ti om eters a
few turns clock wise. An equal volt age should be pres ent on out put 1
and out put 2.

• By press ing the "DIS PLAY SET TINGS" but ton 1, the me ters will show
the set ting of CV po ten ti om e ter 1 and CC po ten ti om e ter 1.
By press ing the "DIS PLAY SET TINGS" but ton 2, the me ters will show
the set ting of CV po ten ti om e ter 1 and CC po ten ti om e ter 2.

• Both out puts can be used as a Dual Volt age Sup ply by con nect ing the
plus of out put 1 to the mi nus of out put 2 (see fig. 4 - 2).
In this con fig u ra tion the out puts op er ate as a unit with an equal
neg a tive and pos i tive out put of −20 V / 2.5 A and +20 V / 2.5 A.

• Both out puts can also be con nected in se ries to op er ate as one unit
with a range of 40 V / 2.5 A (see fig. 4 - 3).
Note that in this con fig u ra tion the cur rent is lim ited by the high est
CC potmeter set ting.

• In par al lel op er a tion the out puts op er ate as one unit with a range of
20 V / 5.0 A (see fig. 4 - 4).

• The set tings of out put 3 are not in flu enced by the Track ing Mode.

40 V / 2.5 A 10 V / 5 A

fig. 4 - 3

Se ries Track ing Mode

• To re turn to the nor mal mode, push the "TRACK ING ON/OFF" but ton
again. Both out put 1 and out put 2 will turn off. Af ter push ing both the
"OUT PUT ON/OFF" but tons again, out put 1 and out put 2 can be set in ­de pend ent again.

20 V / 5 A 10 V / 5 A

fig. 4 - 4

Par al lel Track ing Mode

Page 4 - 1 OPERATING MAINTENANCE TROUBLE SHOOTING Rev. March 2017

EST150 DELTA ELEKTRONIKA BV

OPERATING AND STORAGE CONDITIONS

1) TEM PER A TURE

• The op er at ing tem per a ture range at full load is -20 to +50 °C.

• Note: a lower tem per a ture ex tends the life of the power sup ply.

• The stor age tem per a ture range is -40 to +85 °C.

2) HU MID ITY

• Dur ing nor mal op er a tion hu mid ity will not harm the power sup ply,
pro vided the air is not ag gres sive. The heat nor mally pro duced in the
power sup ply will keep it dry.

• Con den sa tion. Avoid con den sa tion in side the power sup ply,
break-down could be the re sult. Con den sa tion can oc cur dur ing a
pe riod the power sup ply is switched off (or op er at ing at no load) and
the am bi ent tem per a ture is in creas ing .
Al ways al low the power sup ply to dry be fore switch ing it on again.

3) GAL VANIC IN DUS TRY

• For us ing the power sup plies in the gal vanic in dus try it is strongly
rec om mended to take pre cau tions against an ag gres sive
en vi ron ment.

• An ag gres sive en vi ron ment with acid, salt, etc. can harm the elec tronic
com po nents. Some times even the cop per traces of the pc-boards
dis solve.

• To avoid prob lems the power sup plies should be mounted in a rel a tive
clean room, or mounted in a cab i net re ceiv ing clean air with over
pres sure. Or a cab i net with a heat exchanger.

MAINTENANCE & TROUBLE SHOOTING

1) GEN ERAL

• The EST power sup ply nor mally needs no main te nance or cal i bra tion.
Only care must be taken that the cool ing of the unit is not ob structed.

2) NO OUT PUT

• Re move load from out puts.

• Switch on unit.

• If the the out put on LED is not lit, Push out put ON / OFF.

• Turn all the CV and CC po ten ti om e ters a few turns clock wise.
A volt age should be pres ent on the out put.

3) NO LEDS on.

• Over heating can be the cause, cool ing down will re set the ther mal
pro tec tion.

• Check in put power.

• Check fuses in side unit.

4) NO equal volt ages in Track ing Mode.

• One or both of the track ing out puts are in CC mode (CC LED on).

• Turn the CC po ten ti om eters fully clock wise.

• Re duce the load.

Rev. March 2017 OPERATING MAINTENANCE TROUBLE SHOOTING Page 4 - 2

DELTA ELEKTRONIKA BV EST150

Vissersdijk 4
4301 ND Zierikzee
The Netherlands

Tel. [phone]
Fax. [phone]
www.deltapowersupplies.com

DELTA ELEKTRONIKA B.V.

EC Dec la ra tion of Con for mity

We

Delta Elektronika
Vissersdijk 4
4301 ND ZIERIKZEE
The Neth er lands

De clare un der sole re spon si bil ity that the fol low ing Power Sup ply:

EST 150

Meets the in tent of Di rec tives 2014/30/EC for Elec tro mag netic Com pat i bil ity and
Di rec tives 2014/35/EC re gard ing Elec tri cal Safety. (Low Volt age Di rec tive)
Com pli ance was dem on strated to the fol low ing spec i fi ca tion as listed in the of fi cial Jour nal
of the Eu ro pean Com mu ni ties:

EN 61000-6-3 Ge neric Emis sions: (res i den tial, light in dus trial)

EN 55022 Ra di ated and con ducted, Class B
EN 61000-3-3 Volt age fluc tu a tion and flicker

EN 61000-6-1 Ge neric Im mu nity: (res i den tial, light in dus trial)
EN 61000-6-2 Ge neric Im mu nity: (in dus trial en vi ron ment)

EN 61000-4-2 Elec tro static Dis charge
EN 61000-4-3 Ra di ated elec tro mag netic fields
EN 61000-4-4 Elec tri cal Fast Tran sients / Bursts
EN 61000-4-5 Surge on DC out put
EN 61000-4-5 Surge on line in put
EN 61000-4-6 RF com mon mode, con ducted
EN 61000-4-11 Volt age vari a tions and dips

EN 60950 Safety of IT equip ment
EN 61010 Safety of elec tri cal equip ment for mea sure ment, con trol and lab o ra tory use

Man ag ing di rec tor
Zierikzee, March 2017

Page 5 - 1 EC DECLARATION Rev. March 2017

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