Macromatic TCP Series Catalog Page

over temperature & seal leakage relays | plug-in

 Monitors Submersible Pumps

for Over Temperature & Seal
Leakage

 Works with Pumps using

Resistance Sensing Leakage
Detection

 Auto Reset for Over Temperature
 Two Adjustable Sensitivity

Ranges for Seal Leakage

 Low-Profi le Adjustment Knob
 Full Status Indication on Top of

Unit for Easy Troubleshooting

 Utilizes industry-standard 11 pin

octal socket

OVER TEMPERATURE & SEAL LEAKAGE

Auto Reset | TCP Series

Macromatic TCP Series products protect submersible pump motors against damage
from both over temperature and seal leakage.
automatic reset for over temperature (for units with a choice of either automatic
or manual reset in a fl ange-mounted enclosure, see the TCF Series products).
These products utilize an industry-standard plug-in enclosure for panel or DIN-rail
mounting.

Operation:

Two wires from the relay are connected to a N.C. thermal switch in the windings
of the pump motor to monitor for overheating. A low-voltage DC signal is applied
to check the status of the thermal switch. Two additional wires are connected to
a single or dual resistance-sensing probe and the grounded motor housing, or
across two probes to monitor for seal leakage using a low-voltage DC signal. These
products have isolated output contact relays, one for over temperature and one for
seal leakage. The over temperature set-point is fi xed at 5K ohms. Two adjustable
seal leakage sensitivity ranges are available: 4.7K-100K ohms and 1K-250K ohms.

With input voltage applied, normal temperature condition (thermal switch closed) and
no seal leakage, the over temperature relay is energized and the seal leak relay is
de-energized. Both LEDs are Green, indicating normal conditions and input voltage
applied. When the motor temperature rises and the N.C. thermal switch opens, the
over temperature relay is de-energized, opening a contact that had been closed and
turning off the pump contactor. The TEMP LED turns Red. If the over temperature
condition is cleared, the unit will reset automatically.

If the seal starts to leak, contaminating fl uid enters the pump motor cavity. This
lowers the resistance between the internal probe and the common connection.
When the resistance drops below the user-adjustable sensitivity set-point of the
relay, the output relay energizes and closes a contact, which can be used to give an
alarm indication of a leaking seal. The LEAK LED turns Red.

with appropriate

socket

The TCP Series products come with

INPUT

VOLTAGE

24V AC 4.7K to 100K

120V AC 4.7K to 100K

240V AC 4.7K to 100K

LEAKAGE

SENSITIVITY

RANGE

1K to 250K

1K to 250K

1K to 250K

Sockets & Accessories available

CATALOG

NUMBER

TCP8G100
TCP8G250

TCP2G100
TCP2G250

TCP1G100
TCP1G250

WIRING/SOCKET

1 Pin Octal

1

70170-D

DIAGRAM 207

8

OVER TEMPERATURE & SEAL LEAKAGE

Auto Reset | TCP Series

Application Data

Voltage Tolerance:

AC Operation: +10/-15% of nominal at 50/60 Hz.

Load (Burden):

3 VA

Temp & Leakage Voltage:

5V DC Pulsed

Resistance Sensitivity Range (Seal Leakage):

4.7K - 100K or 1K - 250K

Resistance Setting (Over Temperature):

5K

Response Time:

Pick-up: 1 Second
Drop-out: 1 Second

Temperature:

Operating: -28
Storage: -40o to 85oC (-40o to 185oF)

o

to 65oC (-18o to 149oF)

Output Contacts:

7A @ 240V AC / 5A @ 28V DC, 1/4HP @ 120V AC (N.O.)

Life:

Mechanical: 10,000,000 operations
Full Load: 100,000 operations

LED Indicator:

Temp: Green ON with input voltage applied, normal temperature condition
and relay energized; Red ON when over temperature detected and
relay de-energized

Seal: Green ON with input voltage applied and no seal leak; Red ON when
seal leak detected and relay energized

Mounting:

Requires industry-standard 11 Pin Octal socket (Macromatic 70170-D or equivalent).

Approvals:

File #E109466

with

appropriate

socket

File #E109466

Connection Diagrams

This fl exible product offers three options for connection to monitor over temperature and seal leakage:

BETWEEN ONE PROBE & MOTOR HOUSING BETWEEN TWO PROBES & MOTOR HOUSING BETWEEN TWO PROBES

over temperature & seal leakage relays | plug-in

Dimensions

All Dimensions in

Inches (Millimeters)

9