Time Mark 25 Data Sheet

MODEL 25

TIME MARK is a division of

True RMS 3-Phase

Monitor

 User selectable relay operation

options

 Low or High Trip with independent

delays or disabled

 User programmable

 Can be restored to factory settings

or calibrated in the field using a
True RMS Voltmeter

 Model 25SG has silver with gold

flash contacts for low current.

DESCRIPTION

Model 25 True RMS 3-Phase Monitor has a display
that shows the voltage with an accuracy of +/- 0.5%.
The display is updated every second and re-initialized
every 30 seconds.

This unit has a user selectable relay option for High-Low
or DPDT. It can also be user-selected to energize on
fault or de-energize on fault. The user can select
automatic or manual restart on the Model 25. The SG
version of the Model 25 has silver with gold flash
contacts for low current applications.

Model 25 True RMS 3-Phase Monitor can be either
calibrated using a True RMS Voltmeter or can be
restored to factory defaults in the field.

UL SPECIFICATIONS*

Model 25 and 25SG

Input

Voltage (VAC)

Amps 1mA

Frequency

DC Power 24 Volts, 2 watts

Output

50/60Hz (400Hz optional with jumper)

240V AC, 10A, Resistive
120V AC, 4A, General Use
240V AC, 2A, General Use

80-550 Volts

C300, Pilot Duty

OTHER SPECIFICATIONS

Model 25 and 25SG

Start-up Delay 5 secs. Min. or Automatic reset delay setting

Repeat Accuracy

Reset Type

Expected Relay Life Mech: 10 million operations

Elec: 100,000 min. at rated load

Operating Temp

Humidity Tolerance

Enclosure Material

Mounting

Weight

* R/C or Listed (Type 1 or Type 2) UL 1449 overvoltage
control devices with a Voltage Protection Rating of 6KV max.

* For use in a Pollution Degree 2 Environment.

(to allow for solid lock)

± 0.5 % (fixed conditions)

Manual or Automatic

-20°F to +130°F

0-97% w/o condensation

Lexan 920

Polycarbonate

UL 94 V-0 1.5 mm

UL E45329

DIN Rail 35mm

8.5 oz.

Page 1 of 4 06/2013

© 2013 TIME MARK CORPORATION

TIME MARK is a division of

MODEL 25

True RMS 3-Phase Monitor

READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.

KEEP THIS DATA SHEET FOR FUTURE REFERENCE.

GENERAL SAFETY

POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 25.

ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.

THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.

Installation Instructions

INSTALLATION AND SETUP

Controls:
Rotary encoder with switch. Pressing the
encoder switch will display the set points.
Pressing the encoder switch for more than 5
seconds will enter the setup mode. Pressing
switch displays the next menu item. Holding
down the switch during setup mode will
sequence through menus with 1 second
intervals. Rotating the knob clockwise increases
the value and counter-clockwise will decrease
value.

For non-value options, rotating the knob either
way will change the options on the display.

Setup Options:
(Press encoder for at least 5 seconds to
enter setup)

High Voltage: (Factory—Enabled, Set point =
550V, Delay = 5S)

Enable/Disable:
(*If disabled set point and delay are
skipped)

Set Point Range:
Low setpoint + 1% to 550V in 0.5V steps

High Trip Delay:
0 to 20.0 seconds in 0.1Sec steps

Low Voltage: (Factory—Enabled, Set point =
80V, Delay = 5S)

Enable/Disable:
(*If disabled set point and delay are
skipped)

Set Point Range:
80 to High Setpoint -1% in 0.5V steps

Low Trip Delay:
0 to 20.0 seconds in 0.1Sec steps

TYPICAL APPLICATION—MONITOR AND CONTROL

PHASE

C C | B B | A A

24VDC MANUAL

RESET

LOW HIGH

NO C NC | NO C NC

TYPICAL APPLICATION—MONITOR AND ALARMS

Page 2 of 4 06/2013

© 2013 TIME MARK CORPORATION